Cataracts in the Bichon Frise (original) (raw)
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Inheritance of cataract in the Bichon Frise
Veterinary Ophthalmology, 2005
To determine the mode of inheritance of cataract formation in the Bichon Frise. Thirty-six closely related Bichon Frise dogs in a pedigree of 61 dogs were examined using slit-lamp biomicroscopy and indirect ophthalmoscopy over a period of 10 years. Of the 61 related dogs, 36 were examined repeatedly. Twelve cataractous dogs were diagnosed (three males and nine females). Cataractous dogs resulted from matings between unaffected parents, and when one parent was cataractous and the other parent was unaffected. Age at onset of cataract formation ranged from 18 to 160 months. Available information suggests that the cataracts are inherited as an autosomal recessive trait. Cataracts appear inherited in the Bichon Frise as an autosomal recessive trait. Additional cataract x cataract matings are necessary to confirm the autosomal recessive heredity.
Prevalence of canine cataract: preliminary results of a cross-sectional study
Veterinary Ophthalmology, 2004
Objective In this study 2000 dogs were examined ophthalmoscopically to determine presence of cataract. Materials and methods The dogs examined were predominantly from veterinary hospital populations but also from the Waltham Center For Pet Nutrition, rehoming charities and breeding kennels. Prevalence of cataract was thus determined for different age groups (year cohorts). The age at which prevalence of cataract was 50% (C 50 ) was determined indirectly from a fitted prevalence curve.
Study of Occurrence of Cataract and their Surgical Management in Dogs
Indian Journal of Animal Research, 2021
Background: Present study investigated the occurrence of cataract in dogs presented to the Teaching Veterinary Clinical Complex (TVCC) and Department of Veterinary Surgery and Radiology under Odisha University of Agriculture and Technology, Bhubaneswar during a period of four months. During the study period, a total number of 3847 canine cases were registered at TVCC, out of which 23 cases registered under the RKVY project for different types of ophthalmic affections. There were only eight canine cataract cases with overall prevalence of 0.2% among total canines presented to TVCC and 34.78% of total canines presented with some sorts of ophthalmic affections. Methods: Menace reflex, pupillary light reflex, maze test, obstacle test, catoptrics test, Schirmer’s tear test (STT), Schiotz tonometry, Slit lamp bio microscopy and fundus examination -using indirect ophthalmoscope (IO) and fundus camera, were carried out in all the cases studied. Result: Occurrence of cataract was higher in S...
Veterinary Ophthalmology, 2016
Objective: To analyze the change in prevalence and incidence of hereditary eye diseases (HED) in dachshunds due to breeding regulations based on biennial examinations performed by the German panel of veterinary ophthalmologists (DOK) from 1998 to 2011. Animals included: A total of 12,242 dachshunds examined by the DOK and pedigree data of 318,852 dachshunds provided by the German Dachshund Club (DTK). Procedures: The prevalence for congenital cataract (CC), distichiasis (DIST), hereditary cataract (HC), persistent pupillary membranes (PPMs), persistent hyperplastic tunica vasculosa lentis / persistent hyperplastic primary vitreous (PHTVL/PHPV), progressive retinal atrophy (PRA), retinal dysplasia (RD) and findings such as fiberglass-like cataract (FGC) and prominent suture lines (PSLs) was analyzed. The significance (P), confidence interval (CI), odds ratio (OR), relative risk (RR) and inbreeding coefficients (F) were calculated and p<0.05 was considered significant. The incidence was evaluated based on affected dogs within birth cohorts from 1993 to 2006. Results: The prevalence of the conditions studied were: CC 0.5%, DIST 6.7%, HC 3.9%, PPMs 8.4%, PHTVL/PHPV 0.4%, PRA 1.5%, RD 0.2%, FGC 2.2% and PSL 1.5%. The incidence of PRA decreased significantly from 6.0% to 0.6% for dogs born from 1993 to 2006, while HC showed a decreasing trend from 8.7% to 3.1%. More males than females were diagnosed with HC and PRA. Dachshunds with HEDs had an F that was not significantly higher than that of healthy dachshunds. Conclusions: The decreasing incidence of PRA and HC in dachshunds supports the use of frequent HED examinations in combination with breeding control.
Diagnosis, Medical and Operative Treatments of Lens Diseases in Cats and Dogs
Erciyes Üniversitesi Veteriner Fakültesi Dergisi, 2021
Lens diseases are common causes of blindness. These diseases, which cause vision loss if not diagnosed and treated early, are among the most important eye problems that negatively affect the living standards of cats and dogs. The aim of this study was to determine the distribution of lens diseases among cats and dogs according to breed, age and etiological causes, determine the conditions affecting the diagnosis and treatment of these diseases, report the success of the treatment, and present the data. The study material consisted of a total of 45 patients, 17 cats and 28 dogs of different ages, sexes and breeds brought to Istanbul University-Cerrahpaşa, Faculty of Veterinary Medicine, Department of Surgery and diagnosed with lens disease. After an anamnesis, signalement, a detailed eye examination, the diagnosis of the disease and its relationship with other ocular and systemic diseases were investigated, treatment procedures were determined and performed. Postoperative results of the surgical technique and success rates were determined. Patients were checked at regular intervals after treatment.
A Common Problems Of Dog Eyes (A Review
Eye problems in all animals should be addressed as a priority. Early examination by the veterinarian can save corneal scarring, pain and inflammation, vision, and even loss of the eye itself. Moreover, Canine ophthalmology research was always highlighted the main important problems of canine eyes whether they are infectious or non-infectious, However, canine eyes are an immune-privileged organ that is provided with systems to prevent and control the local immune response, which could have a detrimental impact. A dog's eyes perform a nearly miraculous function converting reflected light into nerve impulses that the brain uses to form images of the world. To do this well, all the various parts of the eye must be healthy. Unfortunately, several diseases can disrupt the way a dog's eyes function.
Evaluation of risk factors for development of secondary glaucoma in dogs: 156 cases (1999–2004)
Journal of the American Veterinary Medical Association, 2006
Objective—To determine the immediately antecedent cause of secondary glaucoma and the prevalence of secondary glaucoma with anterior uveitis or lens dislocation in dogs. Design—Retrospective case series. Animals—156 dogs with secondary glaucoma. Procedures—Cause of glaucoma was determined from records. Breed, age, sex, and neuter status of all dogs with secondary glaucoma were compared with the general hospital population. The prevalence of secondary glaucoma in dogs with a primary diagnosis of lens dislocation or anterior uveitis during the same period was determined. Results—Secondary glaucoma was diagnosed in 156 of 2,257 (6.9%) dogs examined because of ophthalmic disease and was bilateral in 33 (21.2%) of those dogs. In 31 (94%) bilaterally affected dogs, the antecedent cause was the same in both eyes. Common causes of secondary glaucoma were non-surgical anterior uveitis (44.9%), anterior uveitis associated with prior phacoemulsification (15.8%), and lens dislocation (15.2%). P...
Routine lens extraction for the treatment of cataract in the dog*
Journal of Small Animal Practice, 1980
In dogs treated for cataract by lens extraction, the authors comment on the wide variety of procedures that have been advocated and used in pre-operative treatment, anaesthesia, operative technique and postoperative care. The article outlines the procedures that have been tried and rejected over the last 10 years and those which are now favoured by the authors. Using standard criteria to assess results, the successful outcome of treatment has increased from 50% to 75%.
Ophthalmic parameters in adult Shih Tzu dogs
Ciência Rural, 2015
Ocular surface diseases are often diagnosed in brachycephalic dogs. The ophthalmic parameters of the Shih Tzu dogs are evaluated in this study since this breed is among the most commonly affected by these diseases. In this study, ophthalmic parameters of this breed were partly studied under physical restraint. Schirmer tear test, breakup time test, aesthesiometry, biomicroscopy, non-contact specular microscopy, laser flaremetry, applanation tonometry, ultrasonography and ophthalmoscopy were carried in 48 eyes of 24 male and female dogs, aged from two to four years, weighing between 5 and 10kg. All dogs were from a breeding kennel. Descriptive statistics were applied to the data. Mean and standard error for Schirmer tear test was 26.145±0.803mm min-1; breakup time test, 13.668±0.538s; and aesthesiometry, 2.395±0.071cm. The biomicroscopy evaluation showed that 70.83% of the eyes had medial entropion; 42% caruncular trichiasis; 33% distichiasis, 27% mild paracentral corneal opacity; an...
Ocular Biometry and Ophthalmic Parameters of Normal Eyes in French Bulldog Healthy Dogs
Advances in Animal and Veterinary Sciences, 2020
The objective was to perform ocular biometry and ophthalmic examination in dogs of the French Bulldog breed. We evaluated 72 normal eyes of 36 healthy French Bulldog dogs, 20 males and 16 females, aged from 1 to 7 years. Ocular ultrasound was performed in B mode with a 10 MHz linear probe, and the following parameters of ocular biometry were evaluated: horizontal axial diameter (HAD) of the eye, lens thickness (LT), anterior chamber depth (ACD), and vitreous chamber depth (VCD). The ophthalmic exams performed were as follows: Schirmer Tear Test-1 (STT-1), rebound tonometry (Tonovet), Tear Film Break-up Time (TBUT), and Fluorescein Test (FT). The ocular biometry results (mean±SD) in millimeters were: 20.5 ± 0.6 (HAD), 3.8 ± 0.4 (ACL), 7.4 ± 0.3 (LT) and 9.4 ± 0.4 (VCL), and from the ophthalmic exams (mean±SD) were: 24 ± 3.7 (16.5-33.5) mm/min (STT-1), 20.0 ± 3.7 (13.5-27.0) mmHg (rebound tonometry), and 24.4 ± 6.3 (16-40) seconds (TBUT), and FT was negative in all dogs. The obtained results can serve as parameters of normal values of ocular biometry and ophthalmic exams for ambulatory routines, intraocular surgeries, and future ophthalmic studies in this breed.