Exposing your eyes to the Sun without solar eclipse glasses or proper eye protection during the eclipse will cause eclipse blindness or retinal burns. This is called Solar retinopathy. The eye damage mainly affects the retina that is back of the eye. The damage can be temporary or permanent without pain. We can lose our eyesight while looking directly the Sun in the Solar eclipse. The damage can be realized from few hours to few days. So use best eclipse viewing glasses to protect your eyes.