Vision and Hearing Loss in Senior Dogs: Signs and Adaptations

Dogs lose some vision and hearing with age, and most cope well. The job is to separate the normal from the treatable and the urgent.

Eyes

Nuclear sclerosis. The blue-grey haze in the center of both eyes in most dogs over 7. Normal aging of the lens; vision stays functional. No treatment needed.

Cataracts. White, opaque, and they block light. Common with age and very common in diabetic dogs. Surgery restores vision in most cases if the retina is healthy; untreated cataracts can cause painful inflammation and glaucoma, so even without surgery they need monitoring.

Glaucoma. High pressure inside the eye. Red, cloudy, painful, often bulging, and it blinds within hours to days. An emergency. Some breeds are predisposed (Cocker Spaniels, Bassets, Beagles, Shiba Inus, terriers); annual pressure checks catch the other eye in time.

Dry eye. Thick discharge, dull cornea, recurrent ulcers. Common in Cavaliers, Westies, Shih Tzus and Bulldogs. A simple tear test diagnoses it and daily drops control it.

Retinal degeneration. Gradual night blindness then day blindness; inherited in many breeds (PRA), or sudden (SARDS). Not treatable, but painless. DNA tests exist for many PRA variants.

Ears

Age-related deafness comes on gradually; owners notice the dog not responding to its name, sleeping through the doorbell, startling when touched. Rule out ear infection and wax first. There is no treatment for age-related hearing loss, and dogs adapt quickly to hand signals.

Chronic ear infections in floppy-eared and allergic breeds cause pain, head shaking and eventual scarring and deafness. Treatable, and worth treating early.

Adapting the home

• Keep furniture where it is; blind dogs map by memory
• Night lights and a lamp near the bed for dogs with fading vision
• Textured mats to mark the top of stairs, doors and the water bowl
• Scented markers (a drop of essential oil on a doorframe) for orientation
• Approach a deaf dog from the front, stamp a foot or flick a light to get attention, teach a “look at me” hand signal
• A bell on your ankle or a light tap before touching
• Walks on a leash and a “blind dog” or “deaf dog” harness patch so strangers approach gently

When to see the vet

Same day: a red, painful or bulging eye; sudden blindness; head tilt with loss of balance (could be vestibular disease or an inner ear infection). Within a week: any new cloudiness, discharge, or a dog that has stopped responding to sound.