Posts Tagged ‘safety’

Fire Safety And RV’s

Saturday, December 3rd, 2011

An RV – a Recreational Vehicle – is like a house on wheels. It is the landlubber’s equivalent of a barge, you can live in it whilst roaming the country. You are as free as a bird in your RV as you do not have to go where the hotels are located.

Having said that, the RV is also a mobile bomb carrying gallons of petrol or diesel and tanks of propane or calorgas. Therefore, you need to have clear safety procedures in place and you need to know and follow them. Fire safety is of premium importance to the responsible RV driver.

Fire extinguishers are rated as either A, B, C, or D, which indicates the type of fire that they may be used to combat. If you did not already know it, you can not simply squirt any fire extinguisher at any sort of fire. Using the wrong extinguisher on a fire can increase the risk, so be careful.

Having said that, some fire extinguishers can be used on different kinds of fires, so it is possible to find extinguishers rated as AB, BC and even ABC. The National Fire Protection Association (NFPA) recommends that all RV’s carry a BC rated extinguisher near the prime exit from the RV. A BC type extinguisher should be used to combat fires originating from flammable liquids and gases – just what an RV driver needs.

The key point about a fire extinguisher of the correct sort is that it has to be in the right place. It is no good having a fire extinguisher if you cannot get to it to combat the fire when it breaks out.

If the diver’s cab is detached from the sleeping compartment, you should carry an extinguisher in the cab too. Store one outside the RV and one inside it too.

It is a good idea to develop a fire prevention and fire safety course before you set out and be certain that your companions know how best to prevent and how best to handle fires in the RV. Fires in confined spaces such as an RV, a caravan or a boat are particularly terrifying and dangerous, because you are more probable to get overwhelmed by the smoke and gases than in a house. Finding your way out of an unfamiliar RV that is full of smoke is not as simple as you might think.

You should also instruct your companions how to operate a fire extinguisher – after all, most individuals have never utilized one. Keep in mind the word ‘PASS’, which stands for ‘Pull, Aim, Squeeze and Sweep’.

This means, pull the pin, aim at the base of the fire, squeeze the handle and sweep the spray across the base of the fire until it is out. The best distance from the fire is about eight feet, but this is not always possible.

If you have to make a choice between saving the vehicle or endangering your safety, let the RV burn, after all, it is insured. Never put yourself or others at risk for the sake of property.

Owen Jones, the author of this piece, writes on several topics, but is now involved with Safety Glasses USA. If you would like to know more, please visit our website at Safety Glasses Bifocal

How To Buy Safe Children’s Toys

Wednesday, November 30th, 2011

We are lucky in the West, or most of it anyway, because the European Community, north America and Canada have strict laws on how safe kids’ toys ought to be.

Despite this, there are plenty of deceitful people about who will import cheap junk toys that could be dangerous to children, which means that anyone buying children’s toys has to have their wits about them.

Having said that, the larger stores do do their best to weed out the rogue importers and in fact most of the dangerous children’s toys are weeded out before they go on sale. Be wary in discount shops and open-air markets though.

Once you get your safe kids’ toys home, the time to be cautious starts. This is because most accidents in the home relating to toys do not happen to the person that the toys were purchased for. This is because adults trip over them. The stairs are the most dangerous

The first thing that anyone buying toys must look for is the label. In the United States this is known as the CPSC (Consumer Product Safety Commission) and in Europe it is known as the Certificat European (CE). However, be cautious, because these labels can be faked very easily.

If you are not accustomed to purchasing toys for children, the next marker to look for is the age range for which the toy is meant. Typically the marker will give 5+ or 7-12, so you still have to exercise some judgment.

Educational toys are important to children and one of the best of these that you can add to as the child grows older is Lego. Duplo is the kind of Lego that is most suited to very young children.

This is because Duplo building blocks are better than the standard Lego building blocks so that tiny hands can manage them easily.

One of the biggest risks for very young children is choking. Young children put everything into their mouths but Lego has manufactured these Duplo building blocks too big to swallow.

As your child grows older, you can add to the Lego set right up to adulthood. There are Lego electric motors for teenagers and there are many adults that have continued using Lego well past their Twenties.

If however your child does have an mishap with a toy, you should endeavour to find out how it happened immediately after seeing to your child.

If the accident was obviously the child’s fault or someone else’s, you can report it if you like, but if the difficulty came about because of a difficulty or failure inherent in the toy, you ought to report it.

The first location to report the toy is to the local authorities and then you should inform the manager of the shop where you bought it. Hold onto the toy until the wheels of bureaucracy turn enough to get around to you

They will come back to you and you may save other children and their parents from going through the same problems that you did.

Owen Jones, the writer of this piece, writes on a variety of topics, but is now concerned with Frontline Figures. If you want to know more, please visit our website at Great Kids’ Toys.

What To Do About Fogged Safety Glasses

Wednesday, November 23rd, 2011

It is obligatory in most Western countries for employers to supply safety glasses or safety goggles and it is compulsory for employees to wear them when instructed to. It has been established that wearing safety glasses at work significantly reduces the number of accidents and accidents are expensive.

The Occupational Safety and Health Administration (OSHA) reported that eye injuries cost US businesses around $467 million each and every year, so a few dozen pairs of safety glasses would easily recoup their price. However, it is also vital to use safety glasses that were designed to protect the eyes of wearers in specific professions.

One of the concerns with safety glasses is that they fog up. This means that employees often have to take off their glasses to de-mist them, which lessens the effectiveness of the glasses. Stopping fogging or misting is a major difficulty for makers of safety glasses.

The reason for of fogging is a lack of air flow. This is usually only a problem with goggles, because they tend to be a tighter fit so they become warmer, which vaporizes any moisture created by the eyes or by perspiration. It can also be caused by a low ambient temperature.

Consequently the first step towards solving the problem of fogging or misting in safety glasses is to find out where and why it happens. Fogging will generally occur when the worker moves from a hot region to a cold one, in hot humid zones or where the employee’s body temperature is higher than the ambient temperature.

The first line of attack should be to opt for lenses that will cope with those environments or conditions. Lenses can be coated with anti-fogging or anti-misting coatings. These coatings are applied at the time of manufacture and ought to last the lifetime of the safety glasses.

These coatings will prevent the build up of water droplets on the lenses permitting clear vision. There are other coatings that can be applied as well, so it is a question of seeing what types of coatings are obtainable from your dealer.

It is worth remembering that not all anti-fog coatings are effectual under all the conditions where fogging can occur, so you should be specific when explaining to your supplier why you require anti-fog lenses.

If someone has to enter an area where fogging often happens, supplying an anti-fog cloth to wipe on their lenses is a short term help. These cloths are alright to use on most lenses, so it is wise to enquire. The effects ought to continue for a number of hours.

If personnel move from one zone to another and have to change their safety glasses from zone to zone, they ought to be shown how to recognize safety glasses with the different coatings. Lenses that have been treated at the factory with an anti fog coating are often stamped with the letters ‘AF’.

It is worth learning how to deal with fogged safety glasses, because it can save a great deal of frustration, misery and money, if you just spend a little time getting the correct safety equipment.

Owen Jones, the writer of this article, writes on several subjects, but is now concerned with Uvex Safety Glasses. If you want to know more, please visit our site at Safety Glasses Bifocal

Everyday Household Eye Injuries In Adolescents

Sunday, November 20th, 2011

Over a million individuals a year in the Unites States alone suffer eye injuries, but the vast majority of them are avoidable and more than ten percent of them are caused by everyday household products.

All this despite the fact that most individuals would rather suffer almost any injury than lose their sight. Just think about what you would forego if you lost your eyesight. If there is a risk to your eyes at work, your employer ought to be providing you with safety glasses and making it compulsory for you to wear them on pain of dismissal., but what about at home?

Just as much supervision ought to be exercised at home because there are many dangerous chemicals and items used there as well. Adolescents are the main victims of eye injuries in the home for several reasons, but mostly because they do not have much experience and they do not realize the potency of some domestic chemicals.

In order to teach young individuals in your household to be safe with their sight, it is best to direct by example. The first step to take is to wash your hands after utilizing chemicals which could burn or aggravate the sensitive tissue of your eyes. Among these dangerous chemicals you can include cleaning agents, bleach, solvents, fertilizers, pesticides and paint.

If you are using these kinds of chemicals, always read the safety directions first and then put safety specs on. Never spay in the direction of anyone and if you are outside, take notice of which direction the wind is blowing and do not let people stand down wind from you while you are working with chemicals.

Many children and adolescents love to help older people do odd jobs, so it is up to you to take care of their safety, just like your employer tries to take care of yours. So use safety glasses, boots and gloves where appropriate and supply them for anyone helping you as well.

If you are working indoors, make certain that everybody can clearly see what they are doing. If you are working in a normally dark place like the attic, under the stairs or in the basement, put a lead light there until you have finished the job.

If you live in an area where the sun is frequently very bright, instruct adolescents to wear protective sunglasses. It is very simple while playing tennis outdoors for example to go for the ball and inadvertently look right into the sun. This goes for several extremely lively, fast-paced sports.

Fireworks, darts, shooting and ball games are all obvious events where caution should be exercised, but it is not the obvious sources of danger that give the biggest problems. How long do adolescents sit at computer screens?

Computer screens are certainly better than they were, but we spend so long sitting at them. Make certain that there is some sort of filter between the computer display and your eyes.

If you wear spectacles anyway, have the next pair treated for use with computers or buy a UV filter to fix to your monitor. Take frequent breaks from the computer and avoid straining your eyes.

Adolescents are also at danger from cosmetics. Be certain that your teenagers understand how and where to apply eye cosmetics safely to avoid inflammation or even damage to their eyes.

Owen Jones, the author of this article, writes on a number of topics, but is now concerned with wet macular degeneration treatment. If you would like to know more, please go to our website at Macular Degenerative Disease

Sleep Disorders And Healthy Aging

Tuesday, November 15th, 2011

It is said that it is probable that most Americans and northern Europeans do not get enough sleep. A lack of sleep can lead to a shortage of concentration (which means being more accident prone); a weaker immune system (more illness) and depression. It is crucial to get enough quality sleep. We all require sufficient decent quality rest, sufficient good quality food and sufficient decent quality exercise.

Aging, or senescence, has its own weird effects on the body. In general, the body’s capacity to carry out particular functions slows down – it takes it longer to do things or get over things.

Sleep can be one of the functions that suffers and we call it insomnia. It is very often said that old people require less sleep. This is not inevitably the case, but what is true is that they do often get less sleep.

lots of people suffer from insomnia, not just older people. Worrying is a cause of sleeplessness; younger people tend to worry about financial issues, older folk tend to worry about health complaints. Women tend to suffer from insomnia more often than men, perhaps they worry more.

Lack of sleep can cause high blood pressure, because the heart is supposed to be resting at night as well, that is it beats more slowly for about eight hours. High blood pressure brings more problems. Unfortunately, we tend to shrug off a bad night’s sleep as if it were a case of bad luck. The truth is it can have much more serious consequences than you first think.

In fact heart disease can be brought about by over sleeping as well as by under sleeping. One of the most common sleeping disorders and also one of the most problematic to detect is sleep apnoea. Doctors cannot detect it without the patient sleeping in hospital. Sufferers do not normally know that they have it.

The spouse is normally the first person to notice the problem: the partner wakes up spluttering with a gasp for air like a drowning man. The sufferer usually stops breathing for between ten seconds and two minutes. It can get very frightening for the partner, but the sufferer seldom wakes up because of it. This can happen dozens of times a night.

If you experience hardship getting to sleep for an extended length of time, you should seek professional help, but here are a couple of pointers you can try. Do not do anything after 7 PM to raise your metabolism or blood pressure, so no strenuous exercise and no high calorie foods (like chocolates). A warm drink of cacao or hot milk assists a lot of people to get to sleep, but not if you have to get up frequently to go to the toilet.

A sherry or a whisky helps others. An alcoholic drink like this at night is not going to turn you into a gibbering alcoholic (some individuals talk such drivel), but it can make sleep reliant on a drink. If you can sleep easily after just one drink, you will be alright, if you need a great deal more, then the cure is getting to be more of difficulty than the illness.

Owen Jones, the author of this article, writes on many subjects, but is now involved with obstructive sleep apnea syndrome. If you want to know more, please visit our website at Sleep Apnea Surgery Techniques

Narcolepsy – A Rare Sleep Disorder

Friday, July 8th, 2011

Narcolepsy is a fairly rare sleep disorder, which causes sufferers to fall asleep at any moment of the day whether they are tired or not. Narcolepsy is a neurological disorder, meaning that the brain sends orders to the body that it is exhausted and should go to sleep immediately and the body obeys whatever it is doing.

Attacks of narcolepsy most often occur while the sufferer is doing something quiet, like watching TV or reading, but it can also occur when eating or driving, which is of course extremely dangerous. Some people fall asleep in the middle of a chat or at work in the middle of a job.

As with a number of other disorders like restless leg syndrome and sleep apnoea and even snoring, it is not usually the sufferer that is first aware that he or she has a problem. Very often a spouse or colleague is the first to alert them to their condition and frequently it take quite a while before they will accept it and even longer before they do anything about it.

There are five indications of narcolepsy, but not all sufferers will suffer all five of them: daytime tiredness, broken sleep patterns (a kind of insomnia), sleep paralysis, hypnagogic hallucinations and cataplexy. If you have any of these indications, you should have yourself checked out, in case you too fall asleep at the wheel or when carrying out a dangerous manouevre at work.

The first and most obvious symptom is daytime drowsiness. Victims of narcolepsy might have the irresistible urge to go to sleep during the day five or six times or more. Narcoleptics call these ‘sleep attacks’ and say that they last for from five to ten minutes each.

Broken sleep patterns are not a perfect manner by which to judge as many individuals suffer from insomnia for other reasons as well.

Around half the sufferers of narcolepsy experience sleep paralysis, which is when the sufferer can neither talk nor move for several minutes slightly before falling asleep and slightly after waking up. It can be very frightening for the narcoleptic and the family.

About the same percentage suffer from cataplexy, which is the loss of muscle control while awake. The bouts of cataplexy take place usually for brief periods of time during episodes of great emotion. For instance, whilst the sufferer is very angry, very glad or very emotional. Sometimes, the sufferer falls down and goes limp – it looks as if they have dropped asleep, but| they are totally awake and fully conscious.

A hypnagogic hallucination happens just before sleeping or and slightly after waking up and involves seeing incredibly vivid images or and hearing incredibly lifelike sounds.

These experiences are often accompanied by sleep paralysis and most people find them very alarming. Normally, the sufferer cannot distinguish between this hallucination and reality during a bout.

There are other symptoms which transpire sometimes such as migraine or headaches and ‘automatic actions’ which are not exactly correct, like putting books away in the fridge or writing off the edge of a page. Narcolepsy can be treated with medication.

Owen Jones, the writer of this piece, writes on several subjects, but is now involved with obstructive sleep apnea syndrome. If you want to know more, please go to our web site at Sleep Apnea Surgery Techniques

Power Tools And Safety Regulations

Tuesday, July 5th, 2011

Power tools have largely taken over from hand tools all around the world, because they allow individuals to get more work done in an alloted space of time. Power tools work far more quickly than hand tools and without the operative having to expend a lot of energy having to turn a handle or push a saw.

However, the increased productivity that power tools deliver comes at a cost: 1] you have to pay for the electricity that drives the apparatus and 2] there is an increased danger to the operative’s health and safety. The price of the electricity ought to be more than easily covered by the raised productivity, but health and safety is often disregarded until it is too late.

People appear to not comprehend the potential dangers of an inexperienced person using a power tool. For instance, a slip with a hand saw, normally means an ugly joint, but a slip with a power saw can cost a finger; a miss whilst hammering a nail in can cost a bruised finger or an ugly dent, but a slip with a nail gun can be like having a bullet in the leg.

This is why insurance companies have made it imperative for firms employing trades people to send their workers on health and safety courses. Claims from inexpert workers was becoming ludicrous as inexpert trades people gave up their old hand tool in favour of the powered alternative.

It caused a great deal of controversy in the Eighties and Nineties in the building industry among employers and employees alike to have to send people on courses about how to use power tools. In Britain, employers were not allowed to let a carpenter use a rotary saw, for instance, unless he or she could prove that they had been trained to use one. Most individuals thought that the health and safety lot had gone too far.

But there were not so many accidents; less time off work due to injury and not so many claims against the insurance companies.

There was tremendous opposition in our building firm from the workforce, when we declared that nobody could sign out a power tool unless he/she had a valid safety certificate to confirm training in the use of that particular piece of apparatus.

We also had a joinery shop, where traditionally every carpenter could go to make anything he needed. Then this policy came in and just one carpenter out of forty was allowed to use the tools. All of a sudden there was a rush to get safety certificates. The new laws had hurt people’s pride.

They thought that they were being told that they did not know their trade, but once they were disqualified from using power tools, they were made to look like inexpert apprentices again. So there was a rush to get a certificate and power tool companies would send a safety specialist to the workplace to train all the relevant tradesmen in the use of their power tools free of charge and pass out certificates.

Then our firm decided to get their ISO 9000 certificate and power tools had to be given certificates of inspection too. So now we had to employ someone to look after the power tools.

Only tradesmen with certificates of competence could sign out a power tool and a power tool could only be signed out if it had a certificate to prove that it had been passed ‘safe for use’ within the last two months. All power tools had to have a certificate of reliability attached to it, a set of safety rules and a pair of safety glasses. That covered the firm from accusations of negligence.

That was 15-20 years ago in the building industry in the UK. I am not saying all this as a history lesson, but more to point out that people can go to a store and purchase or hire very dangerous power tools without having to prove competence. Contractors at work have to prove that they and the tools are up to the job, but the public does not.

I am not in favour of another layer of bureaucracy, but I do would like to make people aware of the danger of not knowing how to use power tools correctly and without even the most fundamental safety equipment.

Do not use power tools without safety glasses is the first rule. Shield your eyes from splinters and flying debris at all costs. A professional would, so so should you.

Owen Jones, the writer of this piece, writes on several subjects, but is now involved with Uvex Safety Glasses. If you want to know more, please visit our site at Safety Glasses Bifocal

Kitesurfing Safety Tips

Tuesday, July 5th, 2011

Safety is a very important aspect of most sports, but even more so with some, like kiteboarding or kitesurfing as it is also known. It involves using a kite of between two and five metres in length to power surf across a flat surface of water.

This is where the greatest danger comes in, a sudden burst of wind can lift you off the water and carry you away. When the gust of wind drops, you could be dumped on rocks or slammed into the side of a building. The option is to let go of the kite and almost certainly lose it. This gets expensive, and being left alone in the open sea is not very nice either.

The fact is that you can never be completely safe while you are kiteboarding. However, the least you can do is try. So wear a safety helmet and a vest that will both reduce injury from a crash yet also float. These two things alone will protect you from the lesser kinds of impact and help you to swim back to shore if needed.

Gloves and knee protectors will also make life easier as will a pair of impact-resistant running or jogging shoes or trainers.

Never disable, and always make use of, any safety devices built into your equipment. It is there for a purpose. Some of these features may be quick release buckles or buttons and safety straps so that the kite cannot be torn from your grasp, leaving you stranded far out at sea.

Be sure of the winds that you ride. Both on-shore and off-shore winds are dangerous because the one will carry you out to sea and the other could take you into cliffs or buildings. The safest wind to ride is a side-shore wind. A side-shore wind will be blowing across the bay, parallel to the shore.

It sounds too obvious to say ‘avoid collisions’, yet in a way a collision is more dangerous at sea than on land. It will take longer to rescue you and longer to get you to hospital and you might drown. Therefore, do not kiteboard in busy waters – where there are boats or swimmers. Attempt to give a hundred metres clearance to anything that would injure you if you hit it.

Check the weather forecast and the predicted wind speed and use a kite that is appropriate for that wind speed and your degree of skill. Do not try to run before you can walk.

Once your kite is aloft, get out on to the sea (or water) as soon as you can and when you are coming ashore, hold the kite low, so that there is less chance of you being carried away into the road or buildings.

Carry a knife when you go kitesurfing because lines becoming tangled up is not an uncommon phenomenon but this can have several unpleasant effects. It can lead you off to where you do not wish to go and it can snarl you up cutting deep into your flesh. Be certain that the knife itself poses no threat by keeping it in a robust sheath. Wear safety goggles to avoid being blinded by spray.

Owen Jones, the author of this article, writes on a number of topics, yet is now concerned with RX Safety Glasses. If you want to know more, please visit our site at Safety Glasses Bifocal

Stained Glass Workshop Safety Suggestions

Monday, July 4th, 2011

Safety in the workplace is a big subject, but when one is working with glass, it becomes a very big topic. The crafts person or artisan who works with stained glass has particular dangers to be conscious of. As we all know, glass can be sharp, and if you cut glass the dust is very dangerous and old stained glass can contain dangerous chemicals for pigmentation and lead to hold the pieces together.

The first bit of advice is never to take small children to a stained glass workshop. This is because of the danger of them cutting themselves on broken glass and inhaling the powder of perilous chemicals. So, if the children are concerned with selecting a design, take the catalogue to them in the car, do not take them to the workshop.

If you need to carry a sheet of stained glass to the car for self-installation, wear gloves that have rubberized surfaces so that you can obtain a good grip without having to grip the sheet of glass tight. Hold the sheet of glass by the side edges if you possibly can. If you hold it top and bottom ant it breaks, the arm at the bottom might be struck by falling, jagged glass.

If you are working with stained glass at home as a hobby, make sure that your environment is spick and span. It is normally easier to score and break glass on a soft surface like a bed sheet. A blanket is too thick and gives too much, which may cause the glass to break in a way that is unwanted.

Whilst cutting glass, always wear a mask and safety glasses. or even safety goggles for improved protection. This is particularly the case if you would like to cut the glass with an angle grinder. The glass powder created by a grinder is very perilous.

While you are soldering the lead strips to hold the fragments of stained glass in position, make sure that you follow safety procedures with the soldering iron. Put it into a holder, so that when you reach for the soldering iron, you can only seize it by the cool handle with no chance of you being able to grasp it by the hot end.

Solder fumes are not healthy for you, so make certain that your workplace is well ventilated with extractor fans. Wear gloves too so that your skin does not suffer from frequent contact with poisonous lead. If you have a cut or a wound, put a plaster on it so that the lead does not get into you too easily.

If you do not have a workshop or even a garden shed, do not be tempted to work in your home, because the fumes and the glass powder will build up and you will never really be rid of them. The powder and fumes are serious pollutants and will build up in textiles, so if you have curtains in your workplace, wash them regularly and vacuum everywhere at least once a week.

Owen Jones, the author of this piece, writes on a number of topics, but is now concerned with RX Safety Glasses. If you would like to know more, please visit our site at Safety Glasses Bifocal

So You Want To Do A Motorcycle Safety Course?

Sunday, July 3rd, 2011

I live in a nation where fathers are proud that their children can ride a motorcycle at eight years of age. When the beaming parent boasts about this, I always ask of the cost of insuring such a young driver but the Thai answer is to smile. Their children are not insured but if they get into an accident, they simply hope that it will not be a bad one.

However, we all know that many motorcycle accidents are serious and that most of those concerned in motorcycle accidents are young people. Why would someone, a parent even, allow a child to ride a motorcycle without insurance? It is beyond me, but then, I am not a parent. I just think that it is irresponsible.

So, the first thing that a motorcyclist ought to do is take a course – a motorcyclists’ safety course, but even that will not help someone who does not have or cannot buy insurance. However, it is a very responsible thing to do to take a motorcyclists’ safety course, because you will be taught how to dress in safe clothing and how to avoid perilous situations.

The first thing to find out concerning a motorcyclists’ safety course is what it will teach you and whether you will get a certificate for completing it. It is also helpful to know whether having such a certificate will entitle you to a discount on your insurance premium. It could well do, which will more than compensate the cost of the course during your lifetime – with any luck.

A good motorcyclists’ safety course ought to teach about the components of a motorcycle, what you can reasonably expect from them and why. It would also teach you basic motorcycle maintenance and repair. After that, it ought to teach you driving skills and how to sidestep accidents.

Wearing the correct safety clothing at all times is another requirement of a good motorcyclists’ safety course. You have to realize why doing something or wearing something is important. And in essence, it is important because it can save your life and avert accidents, which can save other peoples’ lives as well.

It is mostly teenagers who ride motorcycles and teenagers are not well-known for behaving sensibly, so as a parent or a responsible teenager make certain you find out about motorcyclists’ safety course locally.

The Internet is the obvious location to start looking for a motorcyclists’ safety course, but if you are stumped, then the local authorities, the local police station or the local accident prevention bureau will be able to put you on the correct track and so might the neighbourhood library.

You know that it makes sense so only do it, if not to keep your own child alive, then so that he or she does knock me down while I am out strolling with my wife and my dog.

Owen Jones, the author of this piece, writes on several topics, but is now concerned with Safety Glasses USA. If you would like to know more, please visit our site at Safety Glasses Bifocal