Cataract is the clouding of the normally transparent lens in the eye. It lowers the degree of transparency and thus the objects seen will become blur.
Cataract is a common cause of poor vision.
Glaucoma is an ailment that includes any eye diseases which cause an increase in pressure in the eye.This results in visual loss by damaging the optic nerve and retina.
In this the fluid does not drain away properly.
Retianl Detachment occurs when the retina becomes separated from the back of the eye as a result of the spreading of a small tearThis can happen slowly over a period of weeks, or very suddenly, within only a few hours.
Some Views About Eyes n its Diseases.
Good Vision is not just the result of healthy eyes-it also depends on an intact link between the eyes and the vision centers of the brain. There are also nerve diseases that can copromise vision by affecting the tissues that surround and support the eye. These include eye movement disorders and thyroid eye disease. Nerve Disorders that affect vision can strike at any age but they are common in older age.
How to Protect Our Eyes:-
Make habit to clean your eyes daily.
Rest ur eyes for a while if they are tired.
Wear Prescription glasses, if needed, with polycarbonate lenses.
Read under sufficient n uniform ilumin-ation.
Watch out for pointy things, such as tree branches.
If ur eyes feel uncomfortable then consult an eye doctor.