The colored part of the eye surrounding the pupil is called the iris. It automatically regulates the amount of light entering the eyes by regulating the size of the pupil. Light is the primary ...

Amyotrophic Lateral Sclerosis, commonly known as ALS, is an incurable neurodegenerative disease that affects all voluntary muscles in the body leading to paralysis and breathing difficulties. Eye ...

Eye strain has several components. Looking at very bright or very dim objects can lead your pupils to work harder, while looking at a stationary object can cause fatigue in the muscles that aim and ...