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Abstract #10316 Published in IGR 6-1
Tonometry in adult yellow-footed tortoises (Geochelone denticulata)
Selmi AL; Mendes GM; MacManus CVeterinary Ophthalmology 2003; 6: 305-307
OBJECTIVE: To determine intraocular pressure (IOP) in adult yellow-footed tortoises using applanation tonometry. ANIMALS: Fifteen healthy adult captive yellow-footed tortoises (eight males and seven females). PROCEDURES: IOP was estimated for tortoises by using an applanation tonometer after topical anesthesia. Body length, measured from nuchal to anal scutes, ranged from 27.5-57.2 cm. Five measurements from each eye were obtained by a single observer in an ambient temperature of approximately 30°C. RESULTS: Mean ± SEM IOP of 30 eyes of 15 yellow-footed tortoises was 14.2 ± 1.2 mmHg. Range of IOP was 6-30 mmHg for tortoises. Significant differences were detected neither between right and left eyes (p = 0.357) of individual tortoises, nor between males and females (p = 0.524). Observer's readability was good (intraclass coefficient = 0.65), and IOP did not change over the ordered five measurements. CONCLUSIONS: There was no significant difference in IOP between males and females in this species. Tonometry values for normal eyes may represent a useful diagnostic methodology for recognition and treatment of ocular diseases in reptiles.
Dr. A.L. Selmi, Faculdade Anhembi Morumbi Sao Paulo, Sao Paulo, Brazil. andre_selmi@yahoo.com.br
Classification:
5 Experimental glaucoma; animal models
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
