[What meaning should we give to "pan-retinal photocoagulation"; the concept of confluence].
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Biomedical subjects
Publications and source records attributed to J Haut.
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Progress over the past few years in knowledge concerning disorders of the optic nerve and disc leads to changes in their classification. A new terminology is proposed. It uses a minimum of terms, their very general sense being understandable by any nonophthalmologist physician. It is based upon clinical symptoms and signs, thus being immediately applicable in clinical practice.
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The laser trabeculotomy is one of the new techniques using light as a surgical ability in the treatment of some ocular diseases. The trabecula, in fact, plays an important part in the absorption of the aqueous humor and its bad functioning is the reason for chronic glaucoma. Here are some results obtained on in vitro trabecula with YAG-neodymium laser and an argon laser, thus showing that it is necessary to have very good focussing if we want to obtain a drill on the trabecula without having an excessive laser power.
The authors report on a polyradiculoneuropathy related to long-term treatment with Perhexiline maleate (a drug used in France since 1973 for coronary insufficiency) whose presenting sign is a bilateral aedematous optic neuropathy. The mechanism of this effect on the optic nerves and on papilloedema is discussed; it seems not to be caused by a direct toxic action on the optic fibres but by the existence of chronic intracranial hypertension.
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