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Intraocular pressure, ultrasonographic and echobiometric findings of juvenile Yacare caiman ( Caiman yacare ) eye
Author(s) -
Ruiz Thaís,
Campos Wilma N. S.,
Peres Thalita P. S.,
Gonçalves Gentil F.,
Ferraz Rosa H. S.,
Néspoli Pedro E. B.,
Sousa Valéria R. F.,
Ribeiro Alexandre P.
Publication year - 2015
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1111/vop.12146
Subject(s) - intraocular pressure , ophthalmology , ultrasonography , juvenile , medicine , vitreous chamber , anatomy , biology , eye disease , surgery , refractive error , genetics
Objective The aim was to determine the intraocular pressure ( IOP ), the ultrasonographic and echobiometric findings in the eyes of juvenile Yacare caiman (Caiman yacare) . Animals Twenty‐two healthy caimans from a breeding farm in Brazilian Pantanal. Procedures Intraocular pressure was measured under physical restraint and topical anesthesia by applanation tonometry. Five individual measurements of each eye were recorded by the same examiner. B‐mode ultrasonography was performed with a 10‐ MH z linear transducer, and the anterior chamber depth, lens thickness, vitreous depth, and axial globe length were measured. Unpaired and paired t ‐tests were used to assess data. Pearson's test was used to assess correlations between IOP and ocular structures ( P < 0.05). Results Mean ± SD IOP of the 44 eyes studied was 9.56 ± 2.69 mmHg, (range 5.4–15.6 mmHg). IOP did not differ significantly between right and left eyes or between genders ( P > 0.05). Echobiometric measurements did not differ significantly between eyes and genders ( P > 0.05). Intraocular structures measured in male and female subjects were, respectively, 2.61 ± 0.13 and 2.55 ± 0.18 mm for anterior chamber depth, 7.60 ± 0.17 and 7.54 ± 0.20 mm for lens thickness, 6.83 ± 0.20 and 6.90 ± 0.22 mm for vitreous chamber depth, and 17.55 ± 0.25 and 17.54 ± 0.29 mm for axial globe length. Correlations were not observed ( P > 0.05). Conclusion Reference values of tonometry and distances of intraocular structures of Yacare caiman were described. IOP did not correlate with echobiometric measurements in this crocodilian. The ultrasonographic appearance was similar to other domestic and wild species.