Archive for the ‘Types of Visual Defect’ Category

Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Trichiasis
In this state a few small scattered and distorted eyelashes get turned inwardly and rub on the cornea. Dirty and infected eyelids, and burn injuries lead to trichiasis.

Prevention and Precautions
Eyelids should be kept clean with warm water. Proper medication in sore eye prevents this condition. Avoid irritation of the cornea. Trichiasis leads to lacrymation (watering [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Blepharitis
It is a common inflammatory condition at the margin of the eyelids. Crusts and scales are seen between eyelashes.Ulcerated lids become red and swollen. Pain and, at times, mild photophobia with lacrymation causes problems.

Girls and boys, of fair complexion living in poor hygienic conditions are prone to develop this defect. Early treatment can prevent the [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Conjunctivitis
It is inflammation of the conjunctiva which makes the eyes red. It is more marked in the fornix layer and fades towards the cornea. Mild itching and a sandy sensation is felt in the eyelids. At times there is hot sensation.Glare is felt while moving- in the sun.

Prevention and Precautions
The condition is worsened by exposure [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Corneal Ulcer
Corneal Ulcer is an inflammation of the corneal layer of the eye. It is observed as a white spot on the cornea.

Prevention and Precautions
Avoid corneal injury which can be caused in various ways: a foreign body like sand or metal particles, fire works, gulal or coloured water during holi festival watery discharge from smallpox [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Spring Catarrh

This is an uncommon conjunctival disease which attacks both the eyes and lasts for many seasons in weak children (mostly male). A bluish white film is observed around cornea with a mild inflammation of the conjunctiva. There is a feverish sensation, lacrymation. Itching and photophobia.
Appetite is poor. Worms are observed in the stool.
Prevention and [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Pterygium
It is a triangular fold of membrane from conjunctival layer to the cornea. If advanced, it may lead to blindness.In early stages, a layer of red blood vessels is seen which changes to a white membrane. There is irritation, watering and dimness of vision. It is mostly seen in one eye (rarely in both the [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Herpes Zoster
It is a viral infection on the face. It brings fever and body pain; swelling on the eyelids, and small or large maculae (dots) are observed on the cornea.

Prevention and Precautions
The eyelids and the skin around the eyelids should be kept clean. Take complete rest. Use of eye drops with Vitamin C and a [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Xerosis
Xerosis is dryness of the eye in which the lacrymal apparatus is not much affected but secretion of the membrane is impaired. The lustre of the cornea is reduced. It causes cicatrical degeneration of the conjunctival layer.Lack of vitamin A in the diet causes this disease. It is mostly seen in children and young adults. [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Iritis
Iritis is the inflammation of the iris - the black curtain that hangs between the anterior chamber in front and the posterior chamber behind. The condition may be acute, subacute or chronic. It may be a complication of a local eye disease or a general body ailment like tuberculosis, syphilis, gonorrhea or gout. It may [...]



Sep
29
Filed Under (Types of Visual Defect) by sunil on 25-04-2007

Squint
Squint is a common problem and causes a great deal of anxiety to the parents of the afflicted child. Squintis caused by disturbance of the synchronisation of the eye movement. Children often try to mimic squint-eyed persons,and thereby tend to develop a squint. A squint-eyed child needs a lot of sympathy, assurance and support from [...]