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Diseases of the Eye and Adnexa
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According to Oxford's Dictionary of Biomedicine, visual defects arise from the following: problems with the optics of the eye or with the transparency of the cornea, progressive loss of retinal cells, retinal detachment, and/or infection. Blindness can also be a feature of more complex syndromes and can result from damage to relevant parts of the brain. The adnexa of eye refers to accessory visual structures, such as the eyelid and the lacrymal gland.
- Disorders of eyelid, lacrimal system and orbit
- Disorders of conjunctiva
- Disorders of sclera, cornea, iris and ciliary body
- Disorders of lens
- Disorders of choroid and retina
- Disorders of vitreous body and globe
- Disorders of optic nerve and visual pathways
- Disorders of ocular muscles, binocular movement, accommodation and refraction
- Visual disturbances and blindness
- Other disorders of eye and adnexa
 "Visual disorders." A Dictionary of Biomedicine. Oxford University Press Inc.