Eye Conditions in Senior Dogs
Cataracts, nuclear sclerosis, dry eye, and glaucoma.
What is Eye Conditions in Senior Dogs?
Age brings a predictable set of eye changes: the harmless bluish haze of nuclear sclerosis (which does not significantly affect vision), cataracts (which do), keratoconjunctivitis sicca (dry eye), and glaucoma (a painful emergency). Regular ophthalmic exams catch treatable conditions early.
Common signs and symptoms
Signs vary between dogs and can be subtle at first. Watch for the following, especially if several appear together or persist for more than a few days:
- Cloudy or bluish appearance of the lens
- Bumping into furniture, hesitant in low light
- Red, thick discharge (dry eye)
- Squinting, rubbing at an eye, or a red painful eye (glaucoma emergency)
- One eye appearing larger than the other
- Vision changes noticed on stairs or in new places
Risk factors
Certain dogs are more predisposed. Understanding risk helps you screen earlier and act sooner.
- Cataracts: Cocker Spaniel, Poodle, Boston Terrier, and any diabetic dog (nearly 80% within a year)
- Dry eye: Cocker Spaniel, Bulldog, West Highland White Terrier
- Glaucoma: Basset Hound, Cocker Spaniel, Chow Chow
When to see a vet
Use this as general triage guidance, not a substitute for veterinary advice.
- Book a routine appointment if: annual eye checks for senior dogs; sooner if you notice cloudiness or vision changes.
- Seek urgent care if: a red, painful eye that appears swollen or with a fixed dilated pupil — possible glaucoma, which can cause permanent blindness within 24 hours.
Diagnosis and management
Diagnosis includes tear production testing (Schirmer), intraocular pressure measurement (tonometry), and ophthalmic exam. Cataracts can be surgically removed with excellent outcomes. Dry eye is treated with cyclosporine drops. Glaucoma needs immediate pressure-lowering treatment.