The goggles protect the eye or the fix. Examples include sunglasses, safety glasses, eyeglasses and contact lenses. If you need glasses to correct your vision, you may be able to choose between glasses or contact lenses. Any option usually requires a prescription. Almost anyone can wear glasses. Contact lenses require more careful handling.

Many jobs and sports involve some risk of eye injury. Thousands of children and adults suffer eye injuries each year. Most are preventable with proper eye protection. All people have risks of eye damage due to sun. It is important to regularly wear sunglasses that block at least 99 percent of ultraviolet rays.
To prevent eye problems, be sure to follow the instructions for cleaning and wearing contact lenses. The contact lens users are at increased risk of serious eye infections and corneal injury. If a small object gets into the eye, can become trapped under the lens and scratch the cornea. It is likely that conjunctivitis and other minor infections irritate the eyes and make eye contact lenses is uncomfortable and unsafe.

Symptoms of possible problems with contact lenses are redness, pain or burning in the eye, discharge, blurred vision or sensitivity to light (photophobia). If you are having problems, remove your lenses and disinfect them. If you have symptoms for more than 2 or 3 hours after being removed and cleaned the lenses, call your eye doctor.

Soft contact lenses

  • The Daily wear lenses are removed and cleaned at night and are put back in the morning. It takes less time to get used to them than hard lenses, but are less durable.
  • The Extended wear lenses can be used up to a week away, night and day. Then removed, cleaned and reinserted. But some people do not tolerate widespread use. They irritate the eyes if not removed and cleaned regularly contact lenses. Extended use can be uncomfortable and increases the risk of damaging the eye. Although the Food and Drug Administration of USA (FDA, for its acronym in English) has approved some of these lenses for use 30 days, many eye doctors (ophthalmologists) recommend that people only use them for a week maximum. And many doctors suggest that they be removed during sleep.
  • The disposable lenses (daily wear or extended wear) were designed to use up to several weeks and then discard them. Currently, many contact lens wearers choose to wear disposable lenses. The disposable lenses were created because it was believed that replacing lenses more often reduce the risk of corneal infection (keratitis infectious or bacterial), a dangerous complication of soft lenses. But subsequent investigations have shown that people who use disposable lenses, especially the type of extended wear, could have a much higher risk of keratitis.

Hard Lenses

  • The conventional hard lenses are made of rigid plastic (polymethyl methacrylate or PMMA, for its acronym in English) that does not conform to the shape of the eye. Correct vision without distortion and are durable. But it is the type of contact lenses less comfortable. Because they reduce the amount of oxygen reaching the cornea, the people using them at risk of overuse syndrome and other problems.
  • The gas permeable lenses (RGP, by its initials in English) somewhat less durable but are more comfortable than conventional hard lenses. Some gas-permeable lenses are designed for extended wear (evening, 7 days), although many eye specialists warn that should not be used in the extended period.