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cataract |
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- A cataract is a spot on the eye that blocks light, or a blemish within the lens of the eye. This creates a hazy, cloudy, or frosty appearance. Cataracts interfere with vision. |
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corneal injury |
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- The cornea (corn-ee-ah) is the clear window on the front of the eye that covers the coloured iris and pupil. Injury to the cornea causes hazy vision and scarring. It can also cause a loss of vision. |
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corneal ulcers and infections |
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- The cornea is the clear window on the front of the eye that covers the coloured iris and pupil. There are different types of corneal ulcers. The ulcers may be cause by bacteria, a virus or fungus. The corneal tissue breaks down starting at the surface. Poor healing can cause an ulcer to form. |
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endophthalmitis |
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- Endophthalmitis is an inflammation inside the eye caused by an infection. It is a serious condition that can lead to permanent loss of vision, or visual impairment. |
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foreign object in the eye |
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- Sometimes small objects get under the eyelid but do not penetrate the eyeball itself. These can cause irritation and discomfort in the eye and must be removed. |
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aging changes in the senses |
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hypertensive retinopathy |
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neonatal conjunctivitis |
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- Conjunctivitis is an inflammation of the membranes that line the eyelid or the eye. In some cases it is caused by allergies or infections. It can also be brought on by irritants or toxins. Sometimes, another type of illness in the body can cause the problem. When the condition occurs in babies under 4 weeks old, it is called neonatal conjunctivitis. |
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vitamin A |
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retinal detachment |
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- The retina is the nerve layer that lines the inside of the back of the eye. It senses light and sends images on to the brain. When the retina is separated from the layer beneath the retina that gives it nourishment, called the choroids, this is called retinal detachment. The retina does not work when it is detached. This is a very serious problem and, if untreated, almost always leads to blindness. |
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Tay-Sachs disease |
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flashes and floaters |
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- Floaters are spots or lines that seem to float in a person's field of vision. The affected person often sees these accompanied by flashes of light coming from the side of the eye. |
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tonometry |
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- The tonometry test measures the pressure inside the eyeballs. This is called intraocular pressure, or IOP. |
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