Eye

Acute glaucoma
Acute angle-closure glaucoma, also simply called acute glaucoma, is a disease in which there are sudden increases in the pressure in the eye – intraocular pressure.

Macular degeneration
Macular degeneration is a progressive eye condition in which the macula (the central part of the retina) is damaged, causing gradual loss of central, detailed vision.

Strabismus (squint)
Strabismus is a squint. The eyes are misaligned and look in different directions. One eye may look straight ahead, while the other eye turns inward, outward, upward or downward.

Cataracts
Cataracts are clouding of the normally clear lens portion of the eye. This is a gradual process that can eventually impair vision.

Uveitis
Uveitis is inflammation of the uvea, one of the layers enclosing the eyeball. Uveitis has many different causes, including infection, autoimmune disease and trauma.

Ectropion
Ectropion is a condition in which the floppy lower eyelid is everted (turned out), thus exposing its inner surface (conjunctiva).

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Iritis
Iritis is the inflammation of the iris (the ring of coloured tissue surrounding the pupil of the eye). Iritis is the most common form of a family of conditions called uveitis.

Styes
A stye is an abscess in the eyelid caused by bacterial infection.

Colour blindness
The term colour blindness is actually misleading, as it commonly refers to a condition where people are unable to distinguish between different shades of colour.

Red eye
Red eye is usually short-lived and harmless. It can be caused by inflammation of any structure of the eye.

Chalazion
A chalazion is a small, firm swelling usually near the edge of the eyelid. It is not usually painful (unless it swells suddenly) and almost always disappears on its own.

Conjunctivitis (pink eye)
Conjunctivitis is an inflammation of the conjunctiva, which is a thin, transparent membrane that covers the surface of the inner eyelid and the front of the eye.