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Animal / preclinicalVeterinary ophthalmology · 2026

Clinical Features and Surgical Outcomes of Cats With Presumed Primary Lens Instability: A Retrospective Study of 34 Cases (2018-2022).

Havi Sarfaty, Raaya Ezra-Elia, Nili Kahane … Lionel Sebbag

OphthalmologyAnimal / preclinical

Most cats develop glaucoma after surgery for lens instability, despite restored comfort

Clinical Features and Surgical Outcomes of Cats With Presumed Primary Lens Instability: A Retrospective Study of 34 Cases (2018-2022).

Havi Sarfaty … Lionel Sebbag

Veterinary ophthalmology · 2026

Purpose

Describe the clinical features, disease progression, and outcomes of presumed primary lens instability (primary lens instability) in cats, and to assess its association with glaucoma.

Methods

Medical records were reviewed for signalment, clinical history, ophthalmic findings, and treatment.

n = 68 eyes

70%

Results

70%

70% of operated eyes developed high eye pressure about 68 days after surgery.

n = 68 eyes

More results

Cats were 1-13 years old (median 3 years) and predominantly male (82%).

At presentation, 68% of eyes had anterior lens luxation and 32% of eyes had subluxated lens.

Blepharospasm was observed in 25% of eyes, mostly in anterior lens luxation.

More results

Of subluxated lens eyes followed ≥ 90 days, 73% progressed to anterior lens luxation within a median of 15 days (5-174 days).

“

Conclusion · 1 of 2

Presumed primary lens instability presents bilaterally in generally young cats, often with limited signs of ocular discomfort, but with a high risk of concurrent or delayed glaucoma.

Conclusion · 2 of 2

Lens extraction restores comfort and can preserve vision but does not prevent future IOP elevation.

Post

Clinical Features and Surgical Outcomes of Cats With Presumed Primary Lens Instability: A Retrospective Study of 34 Cases (2018-2022).

Most cats develop glaucoma after surgery for lens instability, despite restored comfort

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