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HSE - Eye protection

HSE

Eye protection

Eye protection is protective clothing for the eyes, which comes in many types depending upon the threat that is to be reduced

Goggles are forms of protective eyewear that usually enclose or protect the eye area in order to prevent particulates, infectious fluids, or chemicals from striking the eyes

Safety glasses protect against flying debris but may also protect against visible and near visible light or radiation

Sunglasses protect against high levels of visible and ultraviolet light from the sun

Welding glass is a more extreme implementation of the same idea, suited to the more intense light generated during welding. Grade 14 welding glass (which is much stronger than sunglasses) can also be used to stare directly at the sun (i.e. to view a solar eclipse). Arc welding goggles must be much darker than blowtorch goggles

eyes

Blowtorch goggles

Laser protection eyewear is used to protect eyes from damage from visible and invisible wavelengths of laser light. They can be similar to goggles or be lenses incorporated into other pieces of protective eyewear. Intrabeam viewing of lasers usually requires a low power laser even with protective goggles. Laser protection goggles work on the basis that laser light is one frequency, making it easy to filter out. Laser goggles are subject to degradation and damage like any other kind of eyewear. See laser safety for further information

Visor

Some helmets also protect the eyes

Infection control glasses

Baseball cap (its peak provides some protection against sun dazzle)

Prices depend on the cost, quality, wavelength(s), and type of goggle/lens. Prices range from $20 for a single lens to thousands of dollars per set of goggles

Safety glasses are usually made with shatter-resistant plastic lenses to protect the eye from flying debris. Although safety lenses may be constructed from a variety of materials of various impact resistance, certain standards suggest that they maintain a minimum 1 millimeter thickness at the thinnest point, regardless of material. Safety glasses can vary in the level of protection they provide. For example, those used in medicine may be expected to protect against blood splatter while safety glasses in a factory might have stronger lenses and a stronger frame with additional shields at the temples. The lenses of safety glasses can also be shaped for correction.

The American National Standards Institute has established standard ANSI Z87.1 for safety glasses in the United States, and similar standards have been established elsewhere.

OSHA provides guidance on the type of safety eyewear that should be used for a particular application.

Some safety glasses are designed to fit over corrective glasses or sunglasses. They may provide less eye protection than goggles or other forms of eye protection, but their light weight increases the likelihood that they will actually be used. Modern safety glasses tend to be given a more stylish design in order to encourage their use. Corrective glasses with plastic lenses can be used in the place of safety glasses in many environments; this is one advantage that they have over contact lenses.

There are also safety glasses for welding, which are styled like wraparound sunglasses, but with much darker lenses, for use in welding where a full sized welding helmet is inconvenient or uncomfortable. These are often called "flash goggles", because they provide protection from welding flash.

Worker safety eyewear is available in various lens colors and/or with coatings to protect or enable eyesight in different lighting conditions, particularly when outdoors.

Nylon frames are usually used for protection eyewear for sports because of their lightweight and flexible properties. They are able to bend slightly and return to their original shape instead of breaking when pressure is applied to them. Nylon frames can become very brittle with age and they can be difficult to adjust

 

Goggles or safety glasses are forms of protective eyewear that usually enclose or protect the eye area in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking. They are often used in snow sports as well, and in swimming. Goggles are often worn when using power tools such as drills or chainsaws to prevent flying particles from damaging the eyes. Many types of goggles are available as prescription goggles for those with vision problems

 

Types

The requirements for goggles varies depending on the use. Some examples:

 

Cold weather: Most modern cold-weather goggles have two layers of lens to prevent the interior from becoming "foggy". With only a single lens, the interior water vapor condenses onto the lens because the lens is colder than the vapor, although anti-fog agents can be used. The reasoning behind dual layer lens is that the inner lens will be warm while the outer lens will be cold. As long as the temperature of the inner lens is close to that of the interior water vapor, the vapor should not condense. However, if water vapor gets between the layers of the lens, condensation can occur between the lenses and is almost impossible to get rid of; thus, properly constructed and maintained dual-layer lenses should be air-tight to prevent water vapor from getting in between the lenses.

Swimming: Must be watertight to prevent water, such as salt water when swimming in the ocean, or chlorinated water when swimming in a pool, from irritating the eyes or blurring vision. Allows swimmers to see clearly underwater. They will not be usable more than a few feet underwater, because the water pressure will press them tightly against the face. Examples of these include the Swedish goggles.

Power tools: Must be made of an unbreakable material that prevents chunks of metal, wood, plastic, concrete, and so on from hitting or piercing the eye. Usually has some sort of ventilation to prevent sweat from building up inside the goggles and fogging the surface.

Blowtorch goggles: These protect the eyes from glare and flying sparks and hot metal splashes while using or near as blowtorch. They are not dark enough for arc welding.

Motorcycle riding and other open-air activities: Prevents insects, dust, and so on from hitting the eyes.

Laboratory and research: Combines impact resistance with side shields to prevent chemical splashes reaching the eyes. May also include laser protection which would be covered by EN 207 (Europe) and ANSI Z 136 (United States). Examples of these include red adaptation goggles.

Racquetball: Protect the eyes from racquets swinging in an enclosed area and from impact from hard rubber ball.

Winter sports: Protect the eyes from glare and from icy particles flying up from the ground.

Astronomy and meteorology: dark adaptor goggles are used before going outside at night, in order to help the eyes adapt to the dark.

Basketball: Several NBA players have worn goggles during play, including Kareem Abdul-Jabbar, James Worthy, Horace Grant, Kurt Rambis and Amare Stoudemire; they prevent a fellow player from scratching or hitting the eyes when trying to grab the basketball.

Aviation: In open cockpit aircraft, similar to biplanes, aviators, such as Amelia Earhart and Charles Kingsford Smith, would wear goggles to help protect from the wind and are still in use today. Examples of these include the AN-6530 goggles.

Virtual reality: A virtual reality headset, sometimes called "goggles", is a wrap-around visual interface to display computer output. Commonly the computer display information is presented as a three-dimensional representation of real-world environments

 

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