During exposing to the sun, we often protect our skin by applying sunblock, but we might forget that the eyes need sun protection as well. Despite the fact that eyes only account for 2% of total body surface area,
UV radiation from natural sunlight can drastically damage the eye’s surface tissues as well as main components e.g. the cornea and lens. The structures and functions of the eyes are complex. The eyes are naturally protected by the orbit –the bony cavity that contains the eyeball, muscles, nerves and blood vessels. Eyelids, eyebrows and eye lashes also act as eye protective layers. In addition, constriction response or the narrowing of the pupil, eye closure and eye squinting are naturally protective mechanisms when the eyes are irritated by visible light. Nonetheless, these mechanisms are not activated by invisible UV radiation. On a day without bright sunlight, the body is still exposed to a large amount of UV radiation, therefore UV radiation does not stimulate the natural defenses of the eyes.
Opportunity to get money at ufa