Abstract
Objective-To determine the refractive states of eyes in domestic cats and to evaluate correlations between refractive error and age, breed, and axial globe measurements. Animals-98 healthy ophthalmologically normal domestic cats. Procedures-The refractive state of 196 eyes (2 eyes/cat) was determined by use of streak retinoscopy. Cats were considered ametropic when the mean refractive state was ≥ ± 0.5 diopter (D). Amplitude-mode ultrasonography was used to determine axial globe length, anterior chamber length, and vitreous chamber depth. Results-Mean ± SD refractive state of all eyes was -0.78 ± 1.37 D. Mean refractive error of cats changed significantly as a function of age. Mean refractive state of kittens (≤ 4 months old) was -2.45 ± 1.57 D, and mean refractive state of adult cats (> 1 year old) was -0.39 ± 0.85 D. Mean axial globe length, anterior chamber length, and vitreous chamber depth were 19.75 ± 1.59 mm, 4.66 ± 0.86 mm, and 7.92 ± 0.86 mm, respectively. Conclusions and Clinical Relevance-Correlations were detected between age and breed and between age and refractive states of feline eyes. Mean refractive error changed significantly as a function of age, and kittens had greater negative refractive error than did adult cats. Domestic shorthair cats were significantly more likely to be myopic than were domestic mediumhair or domestic longhair cats. Domestic cats should be included in the animals in which myopia can be detected at a young age, with a likelihood of progression to emmetropia as cats mature.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 279-284 |
| Number of pages | 6 |
| Journal | American Journal of Veterinary Research |
| Volume | 73 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2012 |
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ASJC Scopus subject areas
- veterinary(all)
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Refractive states of eyes and associations between ametropia and age, breed, and axial globe length in domestic cats. / Konrade, Kricket A.; Hoffman, Allison R.; Ramey, Kelli L.; Goldenberg, Ruby B.; Lehenbauer, Terry W.
In: American Journal of Veterinary Research, Vol. 73, No. 2, 02.2012, p. 279-284.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Refractive states of eyes and associations between ametropia and age, breed, and axial globe length in domestic cats
AU - Konrade, Kricket A.
AU - Hoffman, Allison R.
AU - Ramey, Kelli L.
AU - Goldenberg, Ruby B.
AU - Lehenbauer, Terry W
PY - 2012/2
Y1 - 2012/2
N2 - Objective-To determine the refractive states of eyes in domestic cats and to evaluate correlations between refractive error and age, breed, and axial globe measurements. Animals-98 healthy ophthalmologically normal domestic cats. Procedures-The refractive state of 196 eyes (2 eyes/cat) was determined by use of streak retinoscopy. Cats were considered ametropic when the mean refractive state was ≥ ± 0.5 diopter (D). Amplitude-mode ultrasonography was used to determine axial globe length, anterior chamber length, and vitreous chamber depth. Results-Mean ± SD refractive state of all eyes was -0.78 ± 1.37 D. Mean refractive error of cats changed significantly as a function of age. Mean refractive state of kittens (≤ 4 months old) was -2.45 ± 1.57 D, and mean refractive state of adult cats (> 1 year old) was -0.39 ± 0.85 D. Mean axial globe length, anterior chamber length, and vitreous chamber depth were 19.75 ± 1.59 mm, 4.66 ± 0.86 mm, and 7.92 ± 0.86 mm, respectively. Conclusions and Clinical Relevance-Correlations were detected between age and breed and between age and refractive states of feline eyes. Mean refractive error changed significantly as a function of age, and kittens had greater negative refractive error than did adult cats. Domestic shorthair cats were significantly more likely to be myopic than were domestic mediumhair or domestic longhair cats. Domestic cats should be included in the animals in which myopia can be detected at a young age, with a likelihood of progression to emmetropia as cats mature.
AB - Objective-To determine the refractive states of eyes in domestic cats and to evaluate correlations between refractive error and age, breed, and axial globe measurements. Animals-98 healthy ophthalmologically normal domestic cats. Procedures-The refractive state of 196 eyes (2 eyes/cat) was determined by use of streak retinoscopy. Cats were considered ametropic when the mean refractive state was ≥ ± 0.5 diopter (D). Amplitude-mode ultrasonography was used to determine axial globe length, anterior chamber length, and vitreous chamber depth. Results-Mean ± SD refractive state of all eyes was -0.78 ± 1.37 D. Mean refractive error of cats changed significantly as a function of age. Mean refractive state of kittens (≤ 4 months old) was -2.45 ± 1.57 D, and mean refractive state of adult cats (> 1 year old) was -0.39 ± 0.85 D. Mean axial globe length, anterior chamber length, and vitreous chamber depth were 19.75 ± 1.59 mm, 4.66 ± 0.86 mm, and 7.92 ± 0.86 mm, respectively. Conclusions and Clinical Relevance-Correlations were detected between age and breed and between age and refractive states of feline eyes. Mean refractive error changed significantly as a function of age, and kittens had greater negative refractive error than did adult cats. Domestic shorthair cats were significantly more likely to be myopic than were domestic mediumhair or domestic longhair cats. Domestic cats should be included in the animals in which myopia can be detected at a young age, with a likelihood of progression to emmetropia as cats mature.
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UR - http://www.scopus.com/inward/citedby.url?scp=84856667232&partnerID=8YFLogxK
U2 - 10.2460/ajvr.73.2.279
DO - 10.2460/ajvr.73.2.279
M3 - Article
C2 - 22280390
AN - SCOPUS:84856667232
VL - 73
SP - 279
EP - 284
JO - American Journal of Veterinary Research
JF - American Journal of Veterinary Research
SN - 0002-9645
IS - 2
ER -