Why are my dog’s eyes turning grey? Eye disease symptoms, causes, and care for senior dogs

Those big, round eyes are one of the things pet owners love most about their dogs — but as they age, those once-bright eyes can start to lose their sparkle. Many pet owners worry that greying eyes are a sign of cataracts. Today, we’re breaking down the most common dog eye conditions, what causes them, and how to care for your pup’s precious peepers.

What conditions can cause a dog’s eyes to cloud over? 3 eye diseases in senior dogs

Grey, cloudy eyes in dogs aren’t always cataracts — there are other eye conditions that can cause a similar appearance. Here are 3 common eye diseases to be aware of:

1. Dry eye (keratoconjunctivitis sicca)

Trauma, genetics, illness, and immune system disorders can all trigger dry eye in dogs. Dogs with dry eye can’t produce enough tears on their own, which leads to discharge around the eyes and a cloudy, dull appearance. Dry eye can be managed with prescription eye drops from a vet, but it generally can’t be cured and requires long-term treatment.

2. Cataracts

Cataracts in dogs progress through 4 stages: early, immature, mature, and hypermature. In the early and immature stages, dogs can still retain some vision. As cataracts reach the mature stage, night vision and spatial awareness begin to deteriorate. By the hypermature stage, the lens becomes completely white and the dog may develop intraocular inflammation or go blind. That’s why catching and managing cataracts early is so important.

3. Nuclear sclerosis

Nuclear sclerosis — formally known as lenticular nuclear sclerosis — is a normal part of aging in dogs. It happens as lens fibres continue to accumulate over time, making the visual field appear layered, like stacked sheets of transparent film. From the outside, the eyes look hazy and whitish. Because dogs don’t rely on sharp vision the way humans do, and because nuclear sclerosis isn’t actually a disease, treatment isn’t necessary. Since it can look similar to cataracts, it’s worth having a vet examine and diagnose your dog if you notice any changes.

What does eye discomfort look like in dogs? 5 symptoms to watch for

The following signs may indicate that your dog is experiencing an eye problem. To prevent irreversible vision damage, we recommend taking your dog to a professional animal hospital for an eye exam as soon as you notice any of these symptoms.

• Increased eye discharge or frequent tearing
• A white film over the eye, or redness and swelling
• Sensitivity to light
• Frequently pawing or rubbing at the eyes
• Poor balance or bumping into things while walking

Are purebred dogs more prone to eye disease? 4 common causes of eye problems in dogs

Dog eye conditions can be congenital or acquired. Here are four common causes to help pet owners understand which habits to avoid and which health conditions call for extra vigilance around your dog’s vision.

1. Aging

Just like in humans, the lens of a dog’s eye can become cloudy and white with age, leading to declining vision. That said, age-related cataracts tend to develop slowly, and catching them early means treatment can have a much greater impact. Talk to your vet about suitable eye health supplements to support your dog’s vision as part of their daily care routine.

2. Genetics

Purebred dogs do have a higher likelihood of developing hereditary eye conditions. Breeds like Maltese and Poodles are among those more commonly affected by cataracts. Some dogs show symptoms from a young age — often due to genetic defects from inbreeding — with signs typically appearing before age 6, though some dogs don’t develop symptoms until their senior years.

3. Underlying illness

Dogs with diabetes are at significantly higher risk of developing eye disease, and the condition tends to progress faster than it would in otherwise healthy dogs. Managing the underlying illness early is key to protecting their vision. Dogs that have had eye injuries, or those with glaucoma or other eye conditions, should also have regular eye check-ups to reduce the risk of cataracts developing as a complication.

4. Lifestyle habits

Poor nutrition and prolonged exposure to UV rays can both increase a dog’s risk of developing eye disease. Building healthy daily habits for your dog helps strengthen their immune system and reduces the chance of illness, inflammation, or bacterial infection.

3 simple tips for taking care of your dog’s eyes

Now that you know aging is one of the main factors behind eye problems in dogs, here are 3 practical ways to help protect your senior dog’s vision and keep their eyes healthy:

• Supplement with pet health products containing lutein, anthocyanins, or Omega-3.
• Avoid walks during peak midday sun, or use a sun hat or umbrella to shield your dog from UV exposure.
• At the first sign of any eye symptoms, take your dog to an animal hospital or specialist eye clinic as soon as possible, and follow your vet’s instructions for administering eye drops.

Fluv — your trusted partner in pet care

Now that you know why dogs’ eyes can turn grey, remember to keep an eye on your dog’s eyes day to day — and clean away any discharge promptly!

Fluv is Taiwan’s largest pet sitter platform. When you need to be away for an extended period and your pet requires customised care — such as regular eye drops or health supplements — you can find experienced, professional pet sitters on the website or app to give your furry family member the attentive care they deserve. Feel free to share this article with fellow dog owners who might find it helpful! For more useful pet tips and knowledge, follow Fluv on Facebook and Instagram!

Further reading:

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