The eye is made up of a number of features such as the Iris, pupil cornea and optic nerve that help it function as a unit. Ophthalmology is a branch of the medicine that deals with the Anatomy, Physiology and Diseases of the eye.
The leading causes of visual impairment are primarily age-related eye diseases including cataracts, diabetic retinopathy, glaucoma, and age-related macular degeneration.
Main types of eye surgery are:
Lasik eye surgery, is a permanently changes the shape of the cornea (the clear covering of the front eye), this is done to improve vision and reduces a person’s need for glasses or contact lens. Lasik uses an ultraviolet laser to remove a small amount of corneal tissue, this gives the cornea a new shape so the light rays are focused clearly on the retina, Lasik causes to be thinner.