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The form of the scar was described in most instances, but it was not noticed that there was a definite relation between the cicatrical formation and the intra-ocular tension. In 70 per cent of the cases a good result followed the operation, but in 10 per cent the result was decidedly unsatisfactory.
The haziness of the cornea and slight turbidity of the aqueous contribute greatly to the apparent change in the color of the iris. In cases of simple chronic glaucoma there is but little evidence of edema of the iris. As the disease progresses, the stroma of the iris atrophies and contracts. There is very little evidence of small-cell infiltration or the formation of cicatrical tissue.
They may be briefly classified as: 1. Those that cause a partial or complete closure of the lymph spaces and Schlemm's canal by cicatrical contraction, as in sclero-keratitis. Those that cause obstruction to the lymph spaces at the filtration angle by the deposition of fibrin or cellular elements, as in iritis, hemorrhage into the anterior chamber, etc.
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