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Hereditary Eye Diseases


A cloudiness of the lens. Like looking through mist. Dim vision. Congenital (birth). It can be hereditary or acquired. Cataracts usually develop later in life. Can be surgically removed. Occurs usually in one eye first. Glasses may be required once the cataract is removed.

Retinitis Pigmentosa RP

Caused by gradual degeneration of the retina. The retina;s function is field vision. Both eyes are affected. Early symptoms: poor sight in dim light, gradual loss of field vision resulting in tunnel vision. Persons with RP sometimes have problems with their macular (fine point of vision).

Macular Degeneration.

Or called the blind spot. The macular is a very sensitive area of the retina and enables us to see with clarity and in sharp detail (central vision). In macular reading is effected as the central vision is gone, but ou do have side vision. Straight lines become wavy and make it difficult for a person to write on lines. Can occur in young persons. Usually occurs after the age of 50. A person with macular never looses their vision totally.


Have a congenital absence of pigment in the skin/hair and eyes. They have very light skin and need to protect their body against harsh sunlight and to wear dark glasses. Have partial vision /light sensitivity, lack of depth perception, squinting (not all cases) and sometimes have jerky eye movements.

Myopia (Progressive high Myopia)

Short sightedness. Poor distant vision. (see objects close by). Can be corrected with glasses or contact lens. Does not cause loss of total vision. Advised not to play contact sports as this can cause retinal detachment and can cause sudden loss of vision (Elongation of the eye ball).

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