101 Guide to Safety Goggles

Medical Goggles 1
Source: Kemei

The PPE for eyewear has evolved to be very specific to the workplace. Additionally, it has evolved to be more fashionable and comfortable than before. Observe the range of anti-fogging features and colors in contemporary eyewear.

Especially in manufacturing and material-handling facilities, safety glasses and safety goggles shield your eyes from impact, debris, dust, electrical sparks, fire, molten metal, splash, light, and other workplace hazards. However, it pays to have workers find a fit that is cozy and tailored for their workplace in order to ensure that workers wear eyewear protection every day. In today’s blog, we are going to tell you all about safety goggles.

What Are PPE Safety Goggles?

Any eyewear used to shield the wearer from danger is considered a safety goggle. Safety goggles come in a variety of styles. Safety goggles are available for use in sports and racing, for example, to prevent injuries to the eye. But when it comes to science, safety goggles are typically used to shield the wearer’s eyes from potentially harmful substances or chemicals.

Safety goggles shield the eyes from moderate impact and flying debris from sawing, grinding, scaling, breaking glass, minor chemical splashes, etc. Safety glasses are insufficient protection for activities like mixing, pouring, or stirring that employ a lot of chemicals. This safety eyewear contains impact-resistant lenses and metal or plastic safety frames.

ANSI Rating For Safety Goggle

Medical Goggles
Source: Kemei

The main regulatory body for the safety glasses sector is the American National Standards Institute. The nonprofit, which was founded in 1918, has created numerous unique evaluation systems that are now the norm for safety-glass producers. For instance, you can recognize Z87 safety glasses since ANSI examined, certified, and graded them. Continue reading to learn more about the various ratings issued by ANSI.

1. Z87.1

The Z87.1 rating is the most popular one that ANSI provides. When a set of safety glasses is put through an impact resistance test and succeeds, they are given this rating. A steel ball is dropped onto the glasses during the actual test at a distance of 50 feet away. To pass the test and obtain a Z87 certification, the eyewear must be undamaged.

2. Z87+

You could notice safety glasses with a Z87+ grade in addition to Z87 safety glasses. What distinguishes these from the first Z87 rating given by ANSI? A second test measuring the resilience of the eyewear to high-velocity impact is also passed by it to acquire a Z87+ rating.

In this test, the resistance of the eyewear is evaluated after a high-speed steel ball is fired at it. If it succeeds, the eyewear is regarded as high impact certified and is hence Z87+ compatible.

3. D3

You might be confused if your safety glasses’ lenses include a D3 mark in addition to the Z87 certification. D3 certification denotes that the eyewear in question has been given the go-ahead to shield wearers against chemical splashes and droplets. This is crucial for professionals in any position where exposure to such risks is potential.

4. D4

The D4 grade, like the D3 rating described above, denotes an increased level of protection over the Z87 safety eyewear classification. For safety glasses that are certified to protect eyes from dust, the designation D4 is used. Dust exposure can cause irritation and redness in the eyes at best and infection or damage at worst. A pair of D4 safety glasses are needed if your employment involves any task that generates dust.

5. D5 

Fine dust is significantly more harmful to the eyes than regular dust. People are significantly more likely to develop conjunctivitis, which results in excessive mucus production and redness when exposed to fine particles. Safety glasses are essential to defend against this risk; look for ones with a D5 rating to make sure your eyes are adequately shielded.

Types of Safety Goggles

Healthcare Worker Putting On Medical Goggles
Source: Freepik

Unlike safety glasses, safety goggles have a wider field of vision, and many models let the wearer wear their prescription glasses underneath. Behind the protective lenses of several types of goggles are prescription lenses.

Safety eyewear and goggles come in many different varieties, and many are created specifically to address specific threats. Safety eyewear frequently comes in the following varieties:

Direct Vent

To increase airflow into the goggles through vent apertures that are intended to obstruct spheres with a diameter of less than 1.5 mm, these goggles contain numerous perforations all over their body. This decreases lens fogging. Impact protection is their main purpose. This style of goggles should not be used to guard against liquid, dust, or caustic vapor.

Indirect Vent

To enhance airflow, this eyewear has vents that are covered. They offer superior defense against dust and liquid splashes, but you shouldn’t use them around caustic vapors. Goggles with indirect vents will fog up more frequently, even though the covered vents help with ventilation. There are models with dual-pane lenses and anti-fog coatings.


There are no vents, and the goggles are entirely sealed. They offer superior defense against impact, splash, dust, and caustic gases. We advise utilizing anti-fog variants because these goggles tend to fog up rapidly because they lack vents.

Welding Goggles

These eye protection devices have a cupped or wraparound lens that reduces the brightness of the light generated by welding processes. Depending on the sort of welding or cutting done, the size of the electrode, and the electric arc current being employed, different filter lenses are used. 

The quantity of radiant light energy that can be transmitted to the user’s eyes is quantified as a numerical value, and different plate thicknesses offer varied amounts of minimum protective shade. Greater protection is represented by larger values of the minimum protective shade, which results in less radiant energy entering the eyes.

UV Rays Safety Goggles

UV safety goggles shield the eyes from dangerous UV rays. Eyes can become red and burn when exposed to UV rays for a brief period. UV radiation exposure that is prolonged or continuous can harm the skin permanently. Anyone in the direction of UV emissions and all employees utilizing UV light sources should wear protective eyewear.

Anti-fog Goggles

Safety glasses with an anti-fog coating on the lens decrease fogging by preventing water from condensing on the surface. They shield workers’ eyes from damage and give them clear eyesight so they can work.

Anti-fog eyewear considerably boosts performance and is governed by ANSI Z87.1 industrial eye protection regulations. They must meet rigorous standards for lens thickness, corrosion, flammability, and side-shield protection, in addition to optical requirements, to be authorized.

Why is It Important to Wear Safety Goggles?

Lab Professionals Performing An Experiment While Wearing Safety Goggles
Source: Freepik

For a variety of reasons, safety goggles are crucial. To start, they give the user the freedom to handle potentially toxic chemicals without worrying about their eyes getting hurt. The same is possible for biological matter. Safety eyewear is a crucial infection prevention measure, for example, when handling potentially infectious materials.

Safety eyewear can also aid in shielding an individual’s eyes from damage caused by physical trauma. Safety eyewear might be the sole thing stopping a person from being blinded or gravely injured, for instance, if an explosion occurs in the lab. Here are some of the reasons why it is important to wear safety goggles.

1. Overall Safety

“Won’t my ordinary glasses protect me? ” you may be asking. The quick response is sort of. Although they can provide some protection, spectacles cannot compare to safety goggles in terms of protection. Your eyes’ sides are protected by safety eyewear. Side shields cover the big gaps in ordinary glasses so that your eyes are protected. Additionally, safety goggles contain top shields that cover the gap between your eyebrows and your eyeglasses to safeguard your eyes. 

2. Block UV Rays And Blue Light

Your employment requires you to spend time outside, in front of a computer, entering data, or mixing the two. Your eyes are subjected to blue light as you enter data into digital reports. The sun and electronic devices like tablets and smartphones both emit blue light. Your eyes can be harmed by blue light, which can lead to headaches and eye strain. Your eyes can be protected against blue light with the use of blue light-blocking lenses.

Your vision is harmed by ultraviolet radiation, which can also lead to macular degeneration and early-onset vision loss. In several sectors, UV radiation is frequently used to sanitize equipment. Every time you use a UV tool, your eyes should be covered.

3. Get A Clear, Safe View

Don’t quit up if you’ve previously worn safety goggles but were dissatisfied with how easily they get fogged up. Anti-fog technology helps increase your safety goggle-wearing habits and keep you focused. To ensure clear eyesight while working, invest in a pair of safety glasses with an anti-fog coating and carry some anti-fog drops in your pocket. 

Your goggles won’t fog up and obscure your vision regardless of the weather or humidity level. Even in the most nerve-wracking work environment, they resist tension and perspiration. This is crucial if a person is looking out for safety goggles for chemistry lab. 

These days, safety eyewear can even accommodate your contact lenses. Choose safety goggles instead, which you can get with your corrective lens prescription. You won’t need to tuck your stylish frames beneath your protective goggles because you’ll be able to see properly then.

4. Eye Injuries Are Frequent But Avoidable

The Department of Labor estimates that 1,000 eye injuries occur at work each day in the United States. In addition, 165,000 eye injuries occur each year from sports and at home. If the proper safety eyewear had been worn, about 90% of these could have been avoided. For a wide range of professionals in a variety of industries, your vision is essential to your success. Your job and future could suffer if you sustain an eye-related accident.

In conclusion, there is a considerable danger of eye damage of some kind. Wearing safety eyewear would make it simple to avoid suffering any significant harm. Do it now. It is not worth the risk to not use safety glasses.

What Do Safety Glasses Protect You From?

Medical Staff Wearing Medical Goggles
Source: Freepik

Goggles and other safety eyewear protect against injuries caused by unintentional exposure to dangerous situations. The type of risks to which employees may be exposed will vary depending on the organization or industry. Some of the typical sorts of risks to which workers may be exposed in industrial environments, such as construction work or manufacturing, include:

  • Exposure to concrete dust, metal bullets, and dust.
  • Falling debris, such as glass or building materials.
  • Unpleasant or dangerous gases from chemical vapors, including smoke.
  • Splashes of chemicals such as lime, wet or dry cement powder, acids, bases, fuels, solvents, and other substances. 

Medical practitioners, as well as those who perform biological work in lab settings, may be exposed to bloodborne or airborne infections from handling human remains from infected people, sputum, body fluids, or blood. In the same way that the mouth or nasal passages are typically covered by a mask or respirator, the eyes are a point of entry for bacteria or viruses that can cause infection.

The following are examples of common eye injuries, as listed by the CDC:

  • Abrasions on the cornea and conjunctivitis (red eyes).
  • Embedded in the eye are slivers of glass, metal, or concrete.
  • Chemical burns or splashes.
  • A flash of the welder.
  • Black eyes and facial bruises.
  • Virus-based illnesses.
  • Injuries are caused by high-energy light sources such as lasers, ultraviolet light, and infrared heat.
  • Cuts or piercings are caused by objects like missiles or other trash.
  • Ocular injury brought on by eye strikes.

If safety eyewear is chosen, fitted properly, and used as directed, safety goggles and safety glasses can help prevent certain kinds of eye injuries.

What Are Safety Goggles Used For? 

Eye Protection 2
Source: Unsplash

Your eyes are just as crucial to experts in many industries as the people, animals, and tools you deal with. Wear safety glasses to preserve your eyesight without compromising on style to keep your eyes safe from workplace hazards. Here are some of the uses of safety goggles.

Safety Goggles For Your Lab

Eye risks are a constant in today’s cutting-edge research and development labs and come in all shapes and sizes. And if we lose our sight, it’s lost for good, just like our hearing. We should thus make additional efforts to ensure that it never occurs.

You truly have no excuses because modern safety eyewear is so light and comfortable that after a short while, the majority of employees don’t even realize they are wearing it. The fact that safety eyewear continues to improve in terms of fit, appearance, and performance is a major factor in why modern protective eyewear is preferred by employees.

Chemical splashes are the main eye hazard in laboratories, followed closely by flying dust, particles, glass shards, and other similar hazards. Lasers, heat burns, and ultraviolet light (UVL) are some additional risks. Hence, high-quality chemistry lab goggles are essential.  

Safety Goggles For Healthcare Workers 

The Centers for Disease Control and Prevention (CDC) advises eye protection in several situations where workers may be at risk of ocular exposure to infectious diseases. Infections that can enter through the eye’s mucous membranes are just one of the many ways that infectious illnesses can be spread (conjunctiva). 

When a person touches their eyes with contaminated fingers or other items, infectious agents are transferred to the eyes either directly (such as blood splashes or respiratory droplets produced during coughing or suctioning) or indirectly.

For additional safety and protection, an individual can use latex gloves. Gloves such as the latex examination gloves china, manufactured by Kemei, can be useful.    

Safety Goggles For The Welding Industry

One-fourth of all welding injuries are eye injuries. According to studies from the Liberty Mutual Research Institute for Safety, they are by far the most frequent injury among welders. Workers in industries that create industrial and commercial machinery, computer equipment, and fabricated metal goods are those who are most at risk for welding-related eye injuries.

Both damaging visible light from welding and harmful invisible rays like ultraviolet (UV) and infrared radiation are produced (IR). Invisible radiation can harm a worker without them immediately noticing it because it is out of sight and, thus, out of mind. In many cases, the damage could not even be noticeable for years. People are typically exposed to radiation daily from the sun, lightbulbs, microwaves, etc.

However, due to the great concentration of light as well as the frequent exposure brought on by the activity, welding carries a higher risk of health issues. Not just welders run the risk, though. Additionally, staff members who work nearby may also be exposed to possibly harmful light.

What Are Safety Goggles Made of?

Worker Wearing Safety Goggles 3
Source: Freepik

Lens Composition

There are four basic types of materials for safety lenses. Each has unique qualities to take into account for specific circumstances; however, they all meet or surpass the criteria for protecting eyes for at least some applications.

  • Glass lenses might be heavy, uncomfortable, and prone to fogging, but they are not readily scratched. Glass lenses are the most likely to shatter and are not safe to wear if there is even a remote chance of collision.
  • Less scratch-resistant than glass, polycarbonate lenses are lighter, more fog-resistant, stronger than glass or plastic, and hence more impact-resistant.
  • Numerous advantages of polycarbonate with NXT/Trivex, but with improved optical clarity, scratch resistance, and photochromic performance.
  • Plutonite is a proprietary material with exceptional clarity that is made of refined carbonate.

The most common type of lens used in safety eyewear is polycarbonate; however, Trivex lenses are gaining popularity. Both provide 100 percent protection from UV rays and have ten times the impact resistance of glass lenses.

Frame Composition

The frames for safety glasses must be more robust and long-lasting than those for everyday glasses. Depending on the use, different shatter-resistant materials are used to make safety frames, which may also have side shields. For instance, nylon frames are frequently found in sports eyewear due to their flexibility and low weight.

How Are PPE Goggles Made?

Worker Wearing Safety Goggles 1
Source: Freepik

Injection molding is commonly used to construct safety glasses and goggles. During this technique, a polymer material is injected into a metal mold that has been made to replicate the required shape of the lenses and frames. However, the processes listed below provide a basic picture of how different types of eye protection are made. The precise steps needed to build goggles and safety glasses will vary depending on the specific type of product being manufactured.

1. Mold Creation

The lens and frame of the goggles or glasses are shaped using a metal mold that is made. It is possible to use a single mold for both components, or in some circumstances, the frame and lenses may go through separate molding processes. The lens mold has a heavily mirror-coated surface that is made to manufacture lenses with excellent optical clarity.

2. Injection Molding

The goggles or glasses are often made of a polymer substance called polycarbonate. Polycarbonate is a natural choice for safety goggles, a thermoplastic polymer with good optical clarity and twice the impact strength of most comparable plastics.

When polycarbonate pellets are put into an injection molding machine, the material is heated to a temperature of >260oC. At this temperature, the material becomes liquid and is injected under pressure into the mold for a duration of 30 to 60 seconds. After injection, the substance rapidly cools before being extracted from the mold. 

Depending on the mold design, several pairs of glasses or goggles could be produced using a single material injection. Before moving on to the next phase after being extracted from the mold, each pair of goggles is examined to identify any defective ones early in the production process.

3. Surface Treatment

The finished pair of glasses or goggles are put on a frame and moved to a cleaning bath to eliminate any impurities that may be present. After giving the glasses or goggles a thorough rinse in clean water, they are submerged in a chemical bath that coats the surface with a protective layer that will shield the lens from scratches and fogging. The goggles or glasses are then put in a curing oven at a temperature of 120°C for a minimum of 30 minutes or longer, depending on the coating used.

4. Inspection & Final Production

The goggles or glasses are checked for any flaws or lens distortions after the surface treatment. An extra piece of polycarbonate material that was left on the product is milled away as part of the final production process to make it possible for inspectors and other workers to handle it without touching the lenses.

The item has a soft silicone nose piece connected to it. Ear stems are a feature that safety glasses have that help keep the glasses on the wearer’s ears. To keep safety goggles on the wearer’s head, straps are attached. This is also the time to place the valves on vented goggles if there are any.

Safety Goggle Frame and Lens Codes Explained

A European safety standard known as EN 166: 2001 categorizes safety goggles and safety glasses. This code must be followed by every protective eyewear item marketed in Europe.

Levels of protection against UV radiation, infrared radiation, and sun glare are defined by three different standards, respectively: EN 170, 171, and 172.

The obligatory markings on the frames and lenses of each protective device, which are defined by each set of standards, serve as a system for grading the quality of each protective device. Utilize the lowest rating to determine the overall level of safety of the eyewear.

When Should You Wear Safety Goggles?

Every time someone is handling substances or chemicals that could be harmful, safety eyewear should be used. When in doubt, always err on the side of caution and wear your safety goggles. Wearing safety eyewear when they are not necessary is far superior to not wearing them when it should have been. It’s a good idea to simply get into the habit of always wearing safety goggles in the lab setting if remembering to do so is a challenge for you. This will ensure that you have them on when necessary.

Things to Consider When Choosing PPE Goggles

Worker Wearing Safety Goggles
Source: Freepik
  • Choose safety goggles that have enough room and can fit well above your prescription glasses if you already wear them.
  • Your eyes should be fully protected by the safety goggles, which should fit you well.
  • The suction-cup goggles would offer complete protection by enclosing all sides. 
  • There ought to be vented to ensure proper air and oxygen flow to your eyes and minimize fog buildup.
  • Better safety goggles are always preferable because they fit well and offer more protection.
  • Good goggles offer a wide field of vision, allowing you to see clearly and work without any obstructions.
  • To ensure clear vision, the glasses should be well-made and scratch-resistant.
  • The frames have to have rounded edges for hours of pleasant wear.
  • A certified one in compliance with the highest safety rules would be a better choice.


Goggles are a type of eye protection intended to protect the user from eye injuries brought on by dangerous environments at work, home, or other settings, like sports. Approximately 2,000 work-related eye injuries requiring medical attention are reported in the United States each day, according to the National Institute for Occupational Safety and Health (NIOSH), the majority of which could have been avoided or would have been less severe had the appropriate eye protection been worn. 

Known as one of the top PPE manufacturers – Kemei is the market’s most popular safety goggle manufacturer. They are also a medical goggles supplier and latex surgical gloves manufacturer. You can contact Kemei for more details.

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