Rwanda (1969 SG311)
Erythroxylum coca is a South
American native from which cocaine is extracted from its leaves. The use
of cocaine in ophthalmology was popularized by Carl Koller who was introduced
to the substance by Sigmond Fraud, the father of psychoanalysis. Koller
demonstrated that it was a local anaesthetic suitable for rendering the
eye temporarily insensible to pain. It was used extensively during cataract
extraction. Nowadays, its ophthalmic uses are confined to vasoconstriction
of the nasal mucosa during dacrycystorhinostomy and as a diagnostic test
for Horner's pupil when the clinical picture is not obvious.
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