Dog blindness – when should I see a vet?

Updated 2026-09-30 · 1 sources

Based on: PDSA

Contact a vet today

This can have a serious cause – contact your vet today if any of the warning signs below apply, or if you are unsure. Cataracts, glaucoma, uveitis, retinal disease and other problems can cause blindness in dogs.

When to contact a vetWhat to do now

Contact a vet if you see any of this

  • Sudden blindness
  • Vision loss with a painful eye
  • Changes in the appearance of the eye
  • Pupils not responding to light
  • Cloudy eyes
  • Uneven or very wide pupils

What you can do now

  1. Contact your vet.
  2. Note when it started, how often it happens and what else you see.
  3. Take a photo or short video to show the vet.
  4. Keep fresh water available.
  5. Let your dog rest somewhere calm.

Don't

  • Do not give any human medicine.
  • Do not wait if it gets worse.

What it can mean

Blindness in dogs can develop suddenly or gradually, depending on the cause.[1] Possible causes include cataracts, glaucoma, uveitis, retinal disease, optic nerve disease, brain disease, general disease, serious eye injuries, tumours in the eye and breed-specific causes.[1] Blindness in dogs is usually permanent, and your vet can guide you on your dog’s individual prognosis.[1]

Other signs that can come with it

  • Walking slowly and cautiously
  • Clumsiness
  • Not wanting to go out at night
  • Being easily startled or nervous
  • Bumping into people, walls or furniture
  • Confusion and disorientation
  • Being unable to find toys, balls or food dishes
  • Being more vocal, such as barking or whining

Sudden or gradual

Possible causes

  • Cataracts
  • Glaucoma
  • Uveitis
  • Retinal disease
  • Optic nerve disease
  • Brain disease
  • General disease
  • Serious eye injuries
  • Tumours in the eye
  • Breed-specific causes

What the experts say

“As there are many different causes of blindness, the tests your dog might need can vary. An ophthalmoscope (an instrument that can look into the eye) may be used to assess the whole eye (front and back) for issues.”

If your pet is struggling to breathe, has collapsed, is having a seizure or can't stand up: go to the nearest vet now.

Not sure how serious it is?

OkPaw asks a few quick questions about your pet and tells you in 30 seconds whether it can wait. Free on Google Play for Android.

Get it on Google Play

OkPaw is on Android now – an iPhone version is on its way.

Common questions

Can blindness in dogs develop suddenly?

Yes. Depending on the cause, blindness can develop suddenly or gradually.[1]

What can cause blindness in dogs?

Possible causes include cataracts, glaucoma, uveitis, retinal disease, optic nerve disease, brain disease, general disease, serious eye injuries, tumours in the eye and breed-specific causes.[1]

Can dogs adapt to blindness?

Most dogs are very good at adapting to gradual blindness, while sudden blindness can be more difficult for them to adapt to.[1]

Sources

  1. PDSA

How this page was made: written with the help of AI from the sources below, then checked claim by claim against those sources. Urgency levels follow OkPaw’s fixed safety rules. It is guidance, not a diagnosis. How we write our pages

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