Use of biometry and keratometry for determining optimal power of intraocular lens implants in dogs

Gaiddon, J.; Rosolen, S.G.; Steru, L.; Cook, C.S.; Peiffer, R. Jr

Use of biometry and keratometry for determining optimal power of intraocular lens implants in dogs

1991

Gaiddon, J. | Rosolen, S.G. | Steru, L. | Cook, C.S. | Peiffer, R. Jr

Axial length and corneal curvature were determined by use of A-scan ultrasonography and keratometry on both eyes of dogs of various breeds, sizes, and ages. Mean axial length was 20.43 +/- 1.48 mm; axial length was not related to age or sex, but was significantly greater (P = 0.047) in dogs of larger breeds. Mean corneal curvature was 39.94 +/- 2.61 diopters. Dogs of large breeds had significantly (P < 0.001) flatter corneas. Mild, roughly symmetric astigmatism was detected in a majority of dogs. Use of mean values in a theoretic artificial intraocular lens power equation suggests that aphakic dogs require an implant of approximately 40 diopters to achieve emmetropia.

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