Researchers from the National Eye Institute (NEI) and NASA have developed an “early warning” testing system, which can alert eye doctors to first signs of cataracts. This helpful cataract diagnostic device can apply low power laser light into the eye, in order to detect damage to certain proteins in the lens. Proteins damage in the lens can gradually develop into cataracts and even cause blindness if left untreated. Once cataracts have formed and cloudy lens occur, it is too late to deal with. By detecting early signs of protein damage, the newly invented testing system can suggest early interventions, such as controlling diabetes and avoiding sun and UV exposure.

Macular degeneration and cataracts are mostly found in old adults and may cause impaired vision or even blindness. Regular eye exams play an important role in detecting early vision problems, which in turn suggests appropriate treatments. There are still many ways in maintaining good eye health, such as lifestyle changes, proper UV protection, smoking quitting and so on. Another helpful method is to take eye beneficial nutrients, both from diet and supplements.