Peer-reviewed veterinary case report
Blind poodle with persistent pupillary membrane and lens pigmentation
By Yun, SeongJin et al.·Published in The Journal of veterinary medical science·2018·Department of Veterinary Clinical Sciences, South Korea·View original on PubMed →
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Original publication title: A case of unusual persistent pupillary membrane with total anterior capsular pigmentation.
- Species:
- dog
Plain-English summary
A 5-year-old male poodle was brought in for blindness in his right eye. After various eye tests, the vet found that the lens in that eye was severely damaged and detached, with unusual pigmentation on the lens capsule and persistent pupillary membranes (a condition where tissue remains that should have disappeared during development). The left eye had a mature cataract but was otherwise normal. The vet determined that the issues in the right eye were caused by a hypermature cataract leading to inflammation and pigmentation. Unfortunately, the dog did not regain sight in that eye, but the left eye remained functional.
People also search for: poodle blindness causes · dog cataract treatment · persistent pupillary membranes in dogs
Abstract
A 5-year-old castrated male poodle presented with blindness. Ophthalmic examinations including slit-lamp biomicroscopy, tonometry, ultrasonography, and electroretinography were performed. The anterior lens capsule of the right eye (OD) was totally pigmented, with persistent pupillary membranes (PPMs). Ultrasonography of the same eye showed severe lens atrophy and retinal detachment. Electroretinography revealed flat a- and b-waves in OD, but normal amplitudes in the left eye (OS). No ocular defects were detected in OS except mature cataract. In this case, it was determined that hypermature cataract with PPMs caused both lens-induced-uveitis and total anterior lens capsule pigmentation. This condition needs to be differentiated from absent pupil. Notably, PPMs with total anterior lens capsular pigmentation are extremely rare in dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/29731474/