| Goggles and safety glasses are forms of | | | | material that prevents chunks of metal, wood, |
| protective eyewear that usually enclose or | | | | plastic, concrete, and so on from hitting or piercing |
| protect the eye area in order to prevent | | | | the eye. Usually has some sort of ventilation to |
| particulates or chemicals from striking the eyes. | | | | prevent sweat from building up inside the goggles |
| They are used in chemistry laboratories and in | | | | and fogging the surface. |
| woodworking. They are often used in snow | | | | Motorcycle riding and other open-air activities: |
| sports as well, and in swimming. Goggles are | | | | Prevents insects, dust, and so on from hitting the |
| often worn when using power tools such as drills | | | | eyes. |
| or chainsaws to prevent flying particles from | | | | Laboratory: Combines impact resistance with side |
| damaging the eyes. Many types of goggles are | | | | shields to prevent chemical splashes reaching the |
| available as prescription goggles for those with | | | | eyes. May also include laser protection. |
| vision problems.Goggles can also be worn as an | | | | Racquetball: Protect the eyes from racquets |
| accessorie or as a fashion statement. Willy Wonka | | | | swinging in an enclosed area and from impact |
| goggles are are good example. They have very | | | | from hard rubber ball. |
| large cirular lenses and are painted with different | | | | Snow sports: Protect the eyes from glare and |
| patterns and designs. | | | | from icy particles flying up from the ground. |
| The Inuit carved goggles from caribou antler to | | | | Meteorology: dark adaptor goggles are used |
| help prevent snowblindness. The goggles were | | | | before going outside at night, in order to help the |
| curved to fit the user's face and had a large | | | | eyes adapt to the dark. |
| groove cut in the back to allow for the nose. A | | | | Basketball: Several NBA players have worn |
| long thin slit was cut through the goggles to allow | | | | goggles during play, including Kareem Abdul-Jabbar, |
| in a small amount of light. The goggles were held | | | | James Worthy, Horace Grant and Kurt Rambis; |
| to the head by a cord made of caribou sinew. | | | | they prevent a fellow player from scratching or |
| Most modern cold-weather goggles have two | | | | hitting the eyes when trying to grab the |
| layers of lens to prevent the interior from | | | | basketball. |
| becoming "foggy." With only a single lens, the | | | | A visor is a surface that protects the eyes, such |
| interior water vapor condenses onto the lens | | | | as shading them from the sun or other bright light |
| because the lens is colder than the vapor. The | | | | or protecting them from objects. Types of visors |
| reasoning behind dual layer lens is that the inner | | | | include:- |
| lens will be warm while the outer lens will be cold. | | | | A type of hat consisting only of a visor and a |
| As long as the temperature of the inner lens is | | | | way to fasten it to the head. |
| close to that of the interior water vapor, the | | | | The transparent or semi-transparent front part of |
| vapor should not condense. However, if water | | | | a motorcycle crash helmet |
| vapor gets between the layers of the lens, | | | | Any such vertical surface on any hat or helmet. |
| condensation can occur between the lenses and is | | | | Any such horizontal surface on any hat or helmet |
| almost impossible to get rid of; thus, properly | | | | (called a peak in British English). |
| constructed and maintained dual-layer lenses | | | | The part of a helmet in a suit of armor that |
| should be air-tight to prevent water vapor from | | | | protects the eyes. |
| getting in between the lenses. | | | | A device in an automobile that the driver or front |
| The requirements for goggles varies depending on | | | | passenger can lower over part of the windshield |
| the use. Some examples: | | | | to block the sun. |
| Swimming: Must be watertight to prevent water, | | | | A shield to protect the eyes from sunlight on a |
| such as salt water when swimming in the ocean, | | | | flight helmet, or an American football helmet. |
| from irritating the eyes or blurring vision. Allows | | | | Green eyeshades, formerly worn by accountants |
| swimmers to see clearly underwater. | | | | and others engaged in vision-intensive, |
| Power tools: Must be made of an unbreakable | | | | detail-oriented occupations |