Signs, Causes, Treatments, and Prevention

Updated May 2026

Those big, beautiful Chihuahua eyes are one of the breed’s most lovable features — but unfortunately, they can also be one of their biggest health concerns. Because Chihuahuas have large, prominent eyes and shallow eye sockets, they are more prone to eye injuries, irritation, and certain eye diseases than many other dog breeds.

Some eye problems are mild and easy to treat, while others can quickly become emergencies that may lead to pain or even blindness if left untreated.

Knowing the warning signs can help you get your Chihuahua the care they need before the problem becomes serious.

Why Chihuahuas Are Prone to Eye Problems

Chihuahuas are especially vulnerable to eye issues because:

• Their eyes protrude more than those of many breeds
• Their tiny faces offer less protection from scratches and injuries
• Dry eye conditions are more common in small breeds
• Aging Chihuahuas are at higher risk for vision problems

Even something as simple as rough play, shampoo getting into the eye, or debris blowing in the wind can irritate a Chihuahua’s sensitive eyes.

Common Eye Problems in Chihuahuas

Dry Eye (Keratoconjunctivitis Sicca)

Dry eye happens when your Chihuahua doesn’t produce enough tears to properly lubricate the eye.

Symptoms of Dry Eye

• Thick or sticky eye discharge
• Red eyes
• Squinting
• Frequent blinking
• Pawing at the face

Without treatment, dry eye can become painful and may damage the cornea. Many dogs require prescription eye drops for long-term management.

Corneal Ulcers

Corneal ulcers are scratches or wounds on the surface of the eye. Because Chihuahuas have prominent eyes, they can develop ulcers surprisingly easily.

Signs of a Corneal Ulcer

• Squinting
• Excessive tearing
• Cloudy eye appearance
• Light sensitivity
• Holding the eye shut

Corneal ulcers can worsen quickly and should always be treated as urgent veterinary issues.

Cataracts

Cataracts cause the lens of the eye to become cloudy and can eventually lead to blindness.

Cataracts are especially common in:

• Senior Chihuahuas
• Diabetic dogs
• Dogs with inherited eye conditions

You may notice:

• Cloudy or milky eyes
• Trouble seeing in dim lighting
• Bumping into objects
• Hesitation on stairs

If you have a senior dog, you may also want to read our article on Caring for Your Elderly Chihuahua.

Glaucoma

Glaucoma occurs when pressure builds inside the eye. It is extremely painful and requires immediate veterinary care.

Emergency Signs of Glaucoma

• Bulging eye
• Severe redness
• Sudden blindness
• Cloudy cornea
• Pain or crying

Glaucoma can cause permanent blindness very quickly if untreated.

Progressive Retinal Atrophy (PRA)

PRA is an inherited disease that gradually causes blindness.

The first sign is often:

• Difficulty seeing at night

Over time, affected dogs may lose vision completely.

Dogs with vision loss can become anxious or clingy. You may find our article on Anxiety in Chihuahuas helpful if your dog is struggling with changes in vision.

Cherry Eye

Cherry eye happens when the tear gland pops out of place, creating a red swelling in the corner of the eye.

Although not as common in Chihuahuas as in some breeds, it can still occur.

Treatment may include:

• Prescription medication
• Surgical repair in severe cases

Tear Staining

Many Chihuahua owners notice reddish-brown staining beneath their dog’s eyes.

Tear staining can be caused by:

• Watery eyes
• Allergies
• Irritation
• Blocked tear ducts
• Facial structure

While usually harmless, excessive tearing should still be checked by your veterinarian to rule out infection or injury.

Signs Your Chihuahua Needs a Vet Immediately

Eye problems can become serious very quickly. Contact your veterinarian right away if your Chihuahua has:

• A swollen eye
• Green or yellow discharge
• Sudden blindness
• A cloudy eye
• Squinting that lasts more than a few hours
• Pawing at the eye
• An eye that won’t fully open
• An eye that suddenly looks larger than normal

Never ignore sudden eye symptoms in a Chihuahua.

Eye Problems in Senior Chihuahuas

As Chihuahuas age, vision problems become more common. Senior dogs may develop:

• Cataracts
• Vision loss
• Dry eyes
• Nuclear sclerosis (a normal aging change causing bluish haze)

If your dog is losing vision:

• Keep furniture in the same location
• Use night lights
• Avoid startling them
• Use verbal cues when approaching

You may also want to read:

• Hearing Loss in Dogs
• Caring for Your Elderly Chihuahua
• Vision Loss in Chihuahuas

How to Help Prevent Eye Problems

While not every eye condition can be prevented, these tips may help protect your Chihuahua’s eyes:

• Keep facial hair trimmed carefully
• Avoid letting your dog stick their head out of the car windows
• Keep nails trimmed to reduce self-inflicted scratches
• Use a harness instead of pressure on the neck
• Schedule regular veterinary checkups
• Watch closely for redness, discharge, or squinting

Early treatment often prevents more serious problems later.

When in Doubt, Call Your Vet

Because Chihuahua eye problems can progress quickly, it’s always safer to have symptoms checked sooner rather than later. Even conditions that look minor can become painful or dangerous without treatment.

If your Chihuahua suddenly develops redness, swelling, discharge, or changes in vision, contact your veterinarian promptly.

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FAQ About Eye Problems in Chihuahuas

Why are my Chihuahua’s eyes watery?

Watery eyes may be caused by irritation, allergies, blocked tear ducts, dry eye, or an eye injury. Persistent tearing should be checked by a veterinarian.

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Why is my Chihuahua squinting?

Squinting usually means the eye is painful or irritated. Common causes include scratches, ulcers, dry eye, debris, or infection.

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Are cloudy eyes normal in older Chihuahuas?

Some senior dogs develop nuclear sclerosis, which causes a bluish haze and is usually harmless. However, cataracts and glaucoma can also cause cloudy eyes, so a vet exam is important.

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Can Chihuahuas go blind?

Yes. Chihuahuas can lose vision from cataracts, glaucoma, PRA, injuries, or other eye diseases. Early treatment may help preserve vision in some cases.

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Is eye discharge normal in Chihuahuas?

A small amount of clear discharge can be normal, but thick yellow, green, or excessive discharge may signal infection or dry eye.

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When is an eye problem an emergency?

Eye problems are emergencies if your Chihuahua has:

• Sudden blindness
• Severe redness
• Swelling
• Bulging eye
• Pain
• Cloudiness
• Excessive squinting
• An eye that won’t open