The human eye is the natural convex lens that refracts light. So, it is important to know the defects of vision and which type of lens can cure which defect. World Sight Day is observed on the ...

During the Renaissance in Italy, women used eye drops made from a poisonous plant called Atropa belladonna (belladonna means “beautiful woman” in Italian) to make their pupils dilate.

In the human eye, the cornea is the clear, dome-shaped portion located at the front of the eye that is responsible for focusing light, according to the American Academy of Opthalmalogy (AAO).

After so many bounces, hardly any light is left to come out of the hole. The pupil of our eye looks black for the same reason. Send questions and comments to: [email protected].

A man's pupil had an unusual "scalloped" shape with irregular edges, the result of a rare genetic condition. (Image credit: Reproduced with permission from JAMA Neurology. 2018. doi:10.1001 ...

ABERDEEN PROVING GROUND, Md. --A team of Army and academic researchers are investigating how eye-pupil size changes can indicate a person’s cognitive state as a means to enable teaming with ...