See safe, take care in advance

It is common knowledge that UV rays might damage organic tissues; this is why during the summer, we use clothes and solar lotions to protect our skin. We tend to forget that the effects of these rays on our eyes are even more serious. Unlike our skin, our eyes do not contain melanin and cannot develop any tolerance to solar radiation. Consequently, each time we expose them to sun light, they become increasingly more sensitive, vulnerable and exposed to the risk of developing eye diseases and disorders. IR rays are not deemed to be as dangerous as UV rays; however, they cause our eyes to get warmer and consequently inflamed. Even blue light might cause a painful inflammation of the conjunctiva and of the cornea, as well as more serious damages similar to the ones caused by UV rays, such as cataract or macular degeneration, besides altering the circadian rhythm.

The effects of the light on the eyes are cumulative; as a consequence, repeatedly, even short, exposures to sun might cause a noxious global effect. That is why there is a consistent delay between sun exposure  and the first symptoms of the related diseases: our eyes may not get immediately inflamed, but at end of the day we start perceiving the effects of unprotected exposure. The most common diseases provoked by unprotected exposure are dryness of the ocular bulb and discomfort due to the deepithelialization of the exposed part of the eye or  even the abiotic effect of the UV rays. However, long-term effects are the most dangerous. As a matter of fact, the stress on the tissues increases over time, so much that it might lead to diseases such as cataract  and macular degeneration, which is the main cause of sight loss after the age of 50.