Specification

ManualsBrands3M ManualsTools & HardwareGray Frame with Gray Scratch Resistant Lenses Outdoor Safety Eyewear Contractor Pack (4-Pack)

The Human Eye

• The cornea, in direct contact with external environment, plays an essential part in the

transmission of light rays. It is the structure of the human body which has the highest tactile

sensibility.

• The pupil (light controller), situated in the middle of the iris, works like the diaphragm of a

camera. Its diameter changes in accordance with the luminosity.

• The lens allows focusing (near vision, far vision) thanks to a control muscle. With age this

muscle loses power and impacts near vision (presbyopia). The lens can lose its transparency

due to exposure to IR (infrared) light and UV (ultraviolet) light, resulting in loss of vision

(cataract).

• The retina, where all light beams converge, transmits all information through the optic nerve

to the brain in order to create your vision. Burned retina cells are lost forever, which causes

irreversible loss of vision.

Industrial hazards for the eyes:

• Mechanical hazards: dust, shock, solid particles.

• Thermal hazards: hot liquid, molten splash, ames.

• Chemical hazards: splashes of acids, solvents.

• Radiation hazards: ultraviolet, infrared, visible, light, laser.

• Electrical hazards: direct contact, short-circuit electric arc.

Facts on eye damage:

Every day more than 600 workers worldwide suffer from eye injury simply

because they do not wear protective eyewear.*

* Source: Bureau of Labor Statistics

Superior

Rectus Muscle

Vitrious Humor

Blood Vessel

Optic Canal

Optic Nerve

Sclera

Retina

Superior

Rectus Muscle

Aqueous Humor

Pupil

Cornea

Iris

Conjunctiva

Lens

Macula Lutea

2250_PolyCarb_Selection Guide.indd 1 5/24/11 10:23 AM

Summary of content (4 pages)

PAGE 1
Aqueous Humor Pupil Cornea Iris Conjunctiva Lens Macula Lutea Superior Rectus Muscle Vitrious Humor Blood Vessel Optic Canal Optic Nerve Sclera Retina Superior Rectus Muscle The Human Eye • The cornea, in direct contact with external environment, plays an essential part in the transmission of light rays. It is the structure of the human body which has the highest tactile sensibility. • The pupil (light controller), situated in the middle of the iris, works like the diaphragm of a camera.
PAGE 2
Aqueous Humor Pupil Aqueous Cornea Humor Pupil Iris Conjunctiva Cornea Iris Lens Macula Lutea Conjunctiva Lens Superior Rectus Muscle Superior Rectus Muscle Vitrious Humor Vitrious Humor Blood-vessel Blood Vessel Optic Canal Optic Canal Optic Nerve Optic Nerve Sclera Sclera Retina Retina Superior Rectus Muscle Superior Rectus Muscle Macula Lutea The Human Eye • The cornea, in direct contact with external environment, plays an essential part in the transmission of light rays.
PAGE 3
Polycarbonate Lens Selection Guide This Polycarbonate Lens Selection Guide will help you understand the need for different colored lenses and lens types for industrial applications. It will also help you determine what type of lens is best for your application and environment. There are many lens options other than clear, gray and mirror. When choosing a lens, the basic “rule of thumb” is to consider color opposites. Examples of these opposites are shown in the chart below in columns one and two.
PAGE 4
2-1 APPROVED APPROVED Jane Calvin 2011.05.24 10:23:43 -05'00' APPROVED Greg Meyers 2011.05.24 10:36:14 -05'00' Chris Weber 2011.05.24 11:07:20 -05'00' APPROVED Hope 2011.05.24 10:29:48 -05'00' 2250_PolyCarb_Selection Guide_2-1.