Dog Eye Health: Common Conditions, Symptoms, and Treatment Costs

Your dog’s eyes are both remarkably expressive and surprisingly vulnerable. According to PetMD, there are at least 22 common eye problems that affect dogs, ranging from minor irritations that resolve with a few days of drops to sight-threatening emergencies that require immediate surgery. Knowing which conditions are urgent, which can wait for a regular appointment, and what treatment costs look like helps you respond appropriately when your dog’s eyes do not look right.

Cherry Eye (Prolapsed Third Eyelid Gland)

Cherry eye occurs when the gland of the third eyelid (the nictitating membrane) slips out of its normal position and protrudes as a pink or red mass in the inner corner of the eye. According to PetMD, the third eyelid gland produces approximately 30 percent of a dog’s tear film, making it an important structure to preserve.

Breeds most affected: Bulldogs, Beagles, Cocker Spaniels, Bloodhounds, Lhasa Apsos, Shih Tzus, and other brachycephalic or predisposed breeds.

Symptoms: A round, reddish-pink mass visible at the inner corner of one or both eyes. The eye may produce excessive tears or become red and irritated.

Treatment: Surgical replacement of the gland is the recommended treatment. The surgeon creates a pocket or uses sutures to anchor the gland back in its proper position. Removal of the gland is strongly discouraged because it leads to chronic dry eye (keratoconjunctivitis sicca), which requires lifelong daily medication costing $30 to $60 per month.

Cost: Cherry eye surgery typically costs $500 to $1,500 per eye, depending on whether a general practitioner or a veterinary ophthalmologist performs the procedure.

Cataracts

Cataracts are the most common cause of blindness in dogs. They occur when the normally clear lens of the eye becomes cloudy or opaque, blocking light from reaching the retina. The AKC notes that the most common cause of cataracts in dogs is hereditary predisposition, though diabetes is also a frequent trigger, with approximately 75 percent of diabetic dogs developing cataracts within a year of diagnosis.

Symptoms: The pupil appears cloudy, milky white, or bluish rather than the normal dark or reflective appearance. Vision deterioration may manifest as bumping into objects, hesitation on stairs, or difficulty catching treats.

Important distinction: Nuclear sclerosis, a normal age-related hardening of the lens that gives a blue-gray haze to the eyes of older dogs, is commonly mistaken for cataracts. Nuclear sclerosis does not significantly affect vision and does not require treatment. Only a veterinary examination can distinguish between the two.

Treatment: There is no medical treatment that reverses cataracts. The only option to restore vision is surgery (phacoemulsification), in which a veterinary ophthalmologist uses ultrasonic vibration to break up the cloudy lens and remove it, then implants an artificial lens. The success rate exceeds 90 percent when performed by a board-certified ophthalmologist.

Cost: Cataract surgery ranges from $2,000 to $4,000 per eye, including pre-surgical retinal evaluation, the surgery itself, and post-operative medications and follow-up visits.

Glaucoma

Glaucoma is abnormally high pressure inside the eye caused by inadequate drainage of aqueous fluid. It is painful and, if left untreated, leads to permanent blindness within hours to days depending on severity. The AKC identifies Cocker Spaniels, Basset Hounds, Siberian Huskies, Samoyeds, and several terrier breeds as genetically predisposed.

Symptoms: Redness of the white of the eye, squinting or holding the eye closed, a cloudy or bluish cornea, visible enlargement of the eyeball, lethargy, and loss of appetite from pain.

Treatment: Acute glaucoma is a veterinary emergency requiring immediate pressure reduction with medications including carbonic anhydrase inhibitors, prostaglandin analogs, and osmotic agents. Long-term management involves daily eye drops to control pressure, with monitoring every three to six months. If medical management fails, surgical options include laser cyclophotocoagulation to reduce fluid production or, in end-stage disease, enucleation (removal of the eye) to eliminate pain.

Cost: Emergency treatment for acute glaucoma costs $300 to $800. Ongoing medication costs $40 to $120 per month. Laser surgery ranges from $1,500 to $3,000. Enucleation costs $500 to $1,500.

Dry Eye (Keratoconjunctivitis Sicca)

Dry eye occurs when the tear glands produce insufficient tears, leading to chronic irritation, redness, thick mucous discharge, and corneal ulceration if untreated.

Treatment: Daily application of cyclosporine or tacrolimus eye drops to stimulate tear production, plus artificial tears for lubrication. Treatment is lifelong.

Cost: Monthly medication costs $30 to $60. The condition is manageable but requires consistent daily treatment to prevent corneal damage.

Corneal Ulcers

A corneal ulcer is a wound on the surface of the eye caused by trauma (a scratch from vegetation, a cat claw, or a foreign body), infection, or dry eye. Corneal ulcers are painful and can worsen rapidly.

Symptoms: Squinting, excessive tearing, redness, holding the eye closed, and visible cloudiness or an irregular surface on the cornea.

Treatment: Superficial ulcers are treated with antibiotic eye drops, pain medication, and an Elizabethan collar to prevent rubbing. Most heal within five to seven days. Deep or infected ulcers may require surgery to protect the cornea while it heals.

Cost: Treatment for a simple corneal ulcer costs $150 to $400 including the exam, fluorescein stain test (which highlights the ulcer), and medications. Complicated ulcers requiring surgery cost $1,000 to $3,000.

Progressive Retinal Atrophy (PRA)

PRA is a group of inherited degenerative diseases that cause the retina to deteriorate over time, leading to gradual and eventually complete blindness. There is no treatment or cure. PRA affects many breeds and can be identified through genetic testing before breeding.

Symptoms: Night blindness initially, progressing to total blindness over months to years. Pupils may appear dilated and reflect light more than normal.

Cost: Diagnosis via electroretinography costs $200 to $400. While there is no treatment, a diagnosis helps owners prepare adaptations for a blind dog and informs breeding decisions. Our breed-specific health guide covers which breeds carry the highest PRA risk.

When Eye Problems Are Emergencies

Seek immediate veterinary care for any of the following: sudden onset of a red, painful, or swollen eye; squinting that develops rapidly; visible trauma to the eye; sudden changes in pupil size; or any foreign object in or near the eye. Delaying treatment for acute glaucoma or a deep corneal ulcer by even 24 hours can result in permanent vision loss. Our emergency vet guide covers how to prepare for urgent situations.

For a broader perspective on how eye care fits into lifetime veterinary spending, see our complete dog health and vet costs guide.