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Content: According to the Cleveland Clinic, ultraviolet radiation can cause a number of eye disorders, including macular degeneration, solar retinitis and corneal dystrophies. Moreover, the effects are cumulative, so looking at the sun twice results in two times the damage compared to looking at it once, even if viewed on different days. The Danger of Eclipse Viewing
Although people have a natural aversion to extremely bright light, the temptation to gaze at the sun during a solar eclipse can be overwhelming, leading to lapses of good judgement. The darkness that accompanies an eclipse can override the reflex to squint and avert sight, increasing the amount of intense light striking the retina and making eye damage more likely. Because of its intensity, viewing even a small slice of the sun can be dangerous. The lens of the eye focuses and concentrates sunlight on the retina, scorching it and leading to solar retinopathy; because the retina has no pain receptors, you won’t be aware of the damage until it's too late. For the same reason, don’t watch an eclipse through unfiltered telescopes, binoculars or photographic lenses. Eclipse Blindness Symptoms
Solar eclipse eye damage symptoms include: Reduced visual acuity
Central scotomas (blind spots),
Chromatopsia (disruption or tinting of color vision),
Metamorphosia (disruption or distortion of shape perception), and
Photophobia (light sensitivity)
If you have any of these symptoms, go to an eye doctor for examination and treatment.