A vet has explained the reality behind a common symptom seen in many senior dogs – it's actually a normal sign of dog ageing and may not be what many owners assume it is.
Understanding cloudy eyes in older dogs
A vet has revealed that a common symptom seen by many dog owners actually suggests their pet is ageing gracefully. Across the globe, millions cherish their canine companions, who become treasured and essential family members. Perhaps the toughest aspect of owning a dog is their relatively brief lifespan, with old age arriving far sooner than seems fair. A dog's average life expectancy varies by breed, with larger dogs generally living shorter lives than their smaller counterparts.
Similar to humans, elderly dogs experience grey fur, stiffening joints, dental issues and other age-related changes. One frequent sign linked to dog ageing is their eyes developing a cloudy look – though this might not signal what many owners assume.
What nuclear sclerosis means
Lots of dog owners seek guidance and expertise from fellow pet parents and professionals such as vets on social media. A wealth of specialists are eager to share their insights and knowledge with online audiences. Ben, a vet, has cultivated more than 219,000 followers on TikTok, where he consistently posts content covering diverse pet-related subjects. In a recent video, he addressed cloudy eyes in dogs and the widespread belief this indicates cataracts, which isn't necessarily always the case.
Speaking directly to the camera, he began: 'Have you ever seen an elderly dog with cloudy eyes and assumed that they have cataracts?' The footage then switched to show a diagram of a dog's eye positioned behind Ben. He continued: 'Well, actually, it's more likely to be this: the lens of a dog's eye, which is this blue bit here, is constantly producing new layers of cells throughout a dog's life – a bit like an onion, but without actually growing. So, it becomes denser and harder over time. Eventually the eye takes on this slightly bluish appearance. It's called nuclear sclerosis and it's a normal part of dog ageing. Importantly, while it can make it slightly harder for a dog to see objects up close, it has very little impact on vision – unlike cataracts.'
Ben went on to describe how, when examined with an ophthalmoscope, the eye displays a 'characteristic appearance with the harder centre area of the lens and a clear halo around it.' He further cautioned: 'Cloudiness in other parts of the eye can be caused by serious conditions like glaucoma or corneal ulcers. And so I would always advise getting a cloudy eye checked by your vet, especially if your pet is squinting, it's come on suddenly, or their vision is affected. For nuclear sclerosis, however, no treatment is needed. It's just a sign that your pet is aging gracefully. Basically the eye equivalent of getting grey hairs.'
Reactions from dog owners
In the comments section, fellow dog lovers were keen to share their thoughts. One person said: 'My dog's eyes have this. We were convinced he has cataracts but our vet said no but never explained what was causing it. Thank you so much for this information. Annoyed at my vet for not taking the time to explain. My dog's (a Portuguese Water dog) is going on 14.' Another said: 'My Jack Russell is 15 and I was worried. Thank you, she has no problem seeing things but cloudy eyes.' And a third added: 'Thank you. I was getting worried. But I'm still taking my girl for a vet checkup on Thursday.'
