INTRAOCULAR PRESSURE IN NORMAL AND ANAESTHETIZED DONKEYS

Document Type : Research article

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Abstract

Intraocular pressures of 15 donkeys (30 eyes) with clinically normal eyes were measured with the Schiotz tonometer, using only topical corneal anaesthesia (37.5 mm Hg in the right eye and 37.6 mm Hg in the left eye). These donkeys were divided into two groups. Intraocular pressure was recorded after combelen and chloral hydrate in one group < /strong>, and after combelen and thiopental sodium in the other. The average control intraocular pressure value was 38.1 mm Hg and 38.6 mm Hg in the right and left eyes respectively in the first group and 36.7 mm Hg and 36.5 mm Hg in the right and left eyes in the second group < /strong>. Both combelen-chloral hydrate and combelen-thiopental combination produced ocular hypotony. Chloral hydrate produced a more prolonged uniform reduction of ocular p < /strong>ressure than did thiopenal sodium.