Prevalence of feline cataract: results of a cross‐sectional study of 2000 normal animals, 50 cats with diabetes and one hundred cats following dehydrational crises

Williams, David L.; Heath, M. F.

doi:10.1111/j.1463-5224.2006.00497.x

Cited by 30 publications

(39 citation statements)

References 29 publications

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“…More severe cataracts may be present in diabetic kittens compared with adult cats with diabetes (Thoresen et al, 2002;Williams and Heath, 2006).…”

Section: Physical Examinationmentioning

confidence: 93%

“…Twenty-six cats (54%), however, had more pronounced cortical cataracts or posterior subcapsular plaques. Severity of diabetic cataracts differs substantially between dogs and cats, as none of the cats was blind (Williams and Heath, 2006). Therefore, different from diabetic dogs, cataract formation in diabetic cats is usually of limited clinical relevance.…”

Section: Diabetic Cataractsmentioning

confidence: 94%

“…Different to dogs, cats with diabetes are almost never presented because of sudden blindness caused by diabetic cataract. Interestingly, however, the vast majority of diabetic cats reveal some degree of cataract when a specific ophthalmic examination is performed (for details see Chronic Complications of Diabetes Mellitus; Williams and Heath, 2006). In diabetic cats with concurrent disease, additional or other than the classical signs may be reported by the owner.…”

Section: Anamnesismentioning

confidence: 97%

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Feline Diabetes Mellitus

Reusch

2015

Canine and Feline Endocrinology

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“…More severe cataracts may be present in diabetic kittens compared with adult cats with diabetes (Thoresen et al, 2002;Williams and Heath, 2006).…”

Section: Physical Examinationmentioning

confidence: 93%

Section: Diabetic Cataractsmentioning

confidence: 94%

Section: Anamnesismentioning

confidence: 97%

See 1 more Smart Citation

Feline Diabetes Mellitus

Reusch

2015

Canine and Feline Endocrinology

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“…The cadavers were euthanized for reasons unrelated to this study, and were chosen on the basis of availability and feasibility. The lenses of each cadaver were examined immediately after euthanasia using distant direct ophthalmoscopy at 0 D, direct ophthalmoscopy at +10 D, and slit‐lamp biomicroscopy as previously described . The anterior and posterior segments of the globe were also examined grossly and using direct ophthalmoscopy.…”

Section: Methodsmentioning

confidence: 99%

The hypoattenuating ocular lens on CT is not always due to cataract formation

Pemberton

Odom

Dittmer

et al. 2019

Vet Radiology Ultrasound

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Hypoattenuating ocular lenses on CT have been described with cataract formation in humans, however published studies are currently lacking regarding this finding in veterinary patients. The purpose of this retrospective and prospective study was to describe the varying CT appearances of the ocular lens in vivo, and investigate the causes for CT density variations in a population of cats and dogs. A total of 102 canine and feline patients with CT of the head acquired at the authors’ hospital between May 2011 and March 2019 were included. A bilateral hypoattenuating halo surrounding an isoattenuating to mildly hypoattenuating core was described in the ocular lens center of every cat in which a Philips brand proprietary image construction filter was used. A similar but more varied hypoattenuating region was noted in the lenses of 45.8% of dogs where the same filter was applied, as well as 43.8% of dogs with a second, similar filter. Ophthalmic examination of three live cats and one dog with hypoattenuating lenses demonstrated normal lens translucency, excluding the presence of cataract. The effect of different proprietary filters on lens appearance was also described in three fresh cadavers with normal lenses identified on ophthalmic, macroscopic, and microscopic examination. Etiology of the hypoattenuating areas within the ocular lens was not conclusively determined. Recognition that such a variant may be seen in the absence of cataract is important, in order to prevent misdiagnosis.

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“…Cataracts have been diagnosed in many species from most vertebrate classes, including bony fish, 1 reptiles, 7,15,29,42 mammals, 8,11,25,45 and multiple species of birds in 26 orders. 5,6,9,10,12,18,20,21,23,27,35 The majority of cataracts identified in these avian orders were found postmortem.…”

Section: Introductionmentioning

confidence: 99%

Retrospective Investigation of Cataract Management in Avian Species in a Zoologic Collection

Rainwater¹,

Sykes²,

Sapienza³

2015

Journal of Zoo and Wildlife Medicine

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A review of avian cataracts at the Wildlife Conservation Society's Bronx Zoo between 1992 and 2011 was conducted. Ninety cataracts in 54 birds from 42 species were identified. Cataracts were found primarily during examination for ocular abnormalities (29/54, 53.7%) or opportunistically (13/54, 24.1%) and were most commonly diagnosed as mature (22/90, 24.4%). Systemic medical conditions diagnosed in these birds included West Nile virus (4/54, 7.4%), head trauma (3/54, 5.6%), plumbism and Salmonella Pullorum (1/54, 1.9%), Marek's disease (1/54, 1.9%), leukocytosis (1/54, 1.9%), and hyperglycemia (1/54, 1.9%). Cataracts were progressive in seven birds of four species. Unilateral enucleation was performed in 2/54 (3.7%) birds, and 12/54 (22.2%) underwent cataract removal (phacoemulsification in 16 eyes and standard extracapsular cataract extraction in 2 eyes). Concurrent ocular abnormalities, such as corneal scarring and lens-induced uveitis, were seen in 2/18 (11.1%) eyes preoperatively in the group undergoing cataract removal, 2/2 (100%) eyes preoperatively in the group undergoing enucleation, and 33/70 (47.1%) of eyes that did not undergo surgery. For birds undergoing cataract removal, complications included successfully treated cardiorespiratory arrest intraoperatively (1/12, 8.3%) as well as postanesthetic complications of acute respiratory distress and tracheal stricture (2/12, 16.7%). The most common postoperative ocular abnormalities included posterior capsular opacity (4/18 eyes, 22.2%) and corneal scarring (2/18 eyes, 11.1%). Lens cortical regrowth and marked posterior lens capsular opacity occurred in one eye of one bird after phacoemulsification, necessitating a second ocular surgery. A successful outcome, as determined by improved postoperative visual acuity, was seen in 10/12 (83.3%) birds undergoing cataract removal, and 5/12 (41.7%) of these birds were alive >3 yr after surgery. The results of this review will aid clinicians in identifying common stages of cataracts, determining eligibility for cataract surgery, and managing postoperative complications in avian patients.

show abstract

Prevalence of feline cataract: results of a cross‐sectional study of 2000 normal animals, 50 cats with diabetes and one hundred cats following dehydrational crises

Abstract: The study yields novel findings regarding the prevalence of age-related cataract in normal cats together with cats with diabetes and history of previous dehydrational episodes in which prevalence of cataract is increased.

Cited by 30 publications

References 29 publications

Feline Diabetes Mellitus

Feline Diabetes Mellitus

The hypoattenuating ocular lens on CT is not always due to cataract formation

Retrospective Investigation of Cataract Management in Avian Species in a Zoologic Collection

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