Conj Degeneration

Conj Degeneration - Copy of power point presentation of...

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29th October 2006 dr sanjay shrivastava 1 Copy of power point presentation of lecture taken for MBBS students of Gandhi Medical College, Bhopal (M.P) India by Prof. Sanjay Shrivastava Regional Institute of Ophthalmology Gandhi Medical College, Bhopal (M.P.)
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29th October 2006 dr sanjay shrivastava 2 Degenerative Conditions of Conjunctiva
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29th October 2006 dr sanjay shrivastava 3 Degenerative Conditions of Conjunctiva Concretions Pinguecula Pterygium
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29th October 2006 dr sanjay shrivastava 4 Concretions (Lithiasis) They are minute hard, yellow, projectile lesions seen in palpabral conjunctiva. Concretions are due to collection of epithelial cells and inspissated mucous in depressions called Henle’s gland. They never becomes calcareous, therefore the term is misnomer. Because of their hardness, cornea is scratched (corneal abrasions).
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29th October 2006 dr sanjay shrivastava 5 Concretions …contd. They produce foreign body sensation. Commonly found in elderly patients who have suffered from Trachoma. Treatment: Removal under topical Anaesthesia with a sharp hypodermic needle.
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29th October 2006 dr sanjay shrivastava 6 Pinguecula It’s a triangular patch on the bulbar conjunctiva in palpabral aperture in elderly patients especially those exposed to strong sunlight, dust ,wind , drying etc Its combined expression of changes due to senility and exposure. The pinguecula is due to hyaline infiltration and elastotic degeneration in sub-mucous tissue.
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29th October 2006 dr sanjay shrivastava 7 Pinguecula Yellow triangular raised lesion with apex away from cornea are seen in palpabral aperture. Nasal side is affected first then the temporal. The patch looks like fat (pinguis = fat). The lesion is stationary at a moderate size. The pinguecula becomes more prominent in congested / inflammed eye. No treatment is usually required. If removal is desired for cosmetic purposes, it may be excised or destroyed by cautry.
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29th October 2006 dr sanjay shrivastava 8 Pterygium Pterygium (A wing) is a triangular encroachment of bulbar conjunctiva on to the cornea. It is a degenerative condition of the sub-conjunctival tissue which proliferates as vascularized granulation tissue. The conjunctiva invade the cornea destroying the superficial layers of the stroma and bowman membrane , the corneal tissue is covered by conjunctival epithelium.
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29th October 2006 dr sanjay shrivastava 9 Etiology Commonly seen in dry ,sunny, hot climate with sandy soil, ultra-violet light also act as etiological factor. Seen in susceptible individuals , inheritance is dominant.
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dr sanjay shrivastava 10 Symptoms When small gives rise to no symptoms, slight irritation , cosmetic disfigurement and blurring of vision due to induced astigmatism may be there. Encroachment in pupillary area leads to restriction of visual field, and diminution /loss of vision. Large pterygia may cause diplopia due to
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