Dog Eye Injury: When to Go to the Vet

Name: Dog Eye Injury: When to Go to the Vet
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

Immediate veterinary intervention is critical for specific signs of eye injury, including the eye being swollen shut, presence of blood within or around the eye, inability to open the eye, or a visible wound or foreign object. These symptoms can indicate conditions like corneal ulcers, glaucoma, or severe trauma that can lead to permanent vision loss within hours if not addressed promptly.
Corneal ulcers are a common and painful eye injury in dogs, characterized by a scratch or erosion on the cornea, often presenting with squinting, excessive tearing, and cloudiness; prompt diagnosis via fluorescein staining and appropriate antibiotic or anti-inflammatory treatment is essential to prevent deepening of the ulcer.
Foreign bodies, such as grass seeds or thorns, require professional removal as attempting self-extraction can exacerbate corneal damage or push the object deeper into the eye, necessitating veterinary examination and potentially sedation for safe retrieval.
Conditions like glaucoma and uveitis present with overlapping symptoms to trauma but require distinct diagnostic approaches, including tonometry for intraocular pressure measurement in glaucoma and thorough ophthalmic examination for uveitis, both of which can cause rapid vision loss and severe pain.
Home treatment is contraindicated for most eye injuries, as human medications (especially steroids) can worsen conditions like corneal ulcers, and non-sterile solutions can introduce infection; only sterile saline is recommended for gentle flushing of debris prior to veterinary assessment.
Preventative measures such as keeping dog nails trimmed, securing dogs during car rides, and managing yard hazards can significantly reduce the risk of accidental eye trauma, while prompt veterinary care, adherence to prescribed medication schedules, and consistent use of Elizabethan collars are crucial for successful recovery.

If your dog has an eye injury, act fast. Some eye problems can cause permanent vision loss within hours. Go to an emergency veterinarian immediately if your dog has any of these signs: the eye is swollen shut, there is blood inside or around the eye, the dog is squinting and cannot open the eye, or you can see a visible wound or object stuck in the eye. Do not wait to see if it improves. Do not try to treat it at home. Eye pain is severe, and the structures inside the eye are delicate and easily damaged.

You may feel unsure whether the problem is serious. That uncertainty is normal. The safest choice is to have a veterinarian examine the eye as soon as possible. Many eye injuries look similar at first, and only a professional with proper tools can tell a minor scratch from a ruptured eyeball. The American Veterinary Medical Association lists eye injuries among conditions that require immediate professional care. When in doubt, go in.

Is This an Emergency?

Use this table to decide your next step. If you see any sign in the top row, do not wait. Go to an emergency vet now.

Go to an emergency vet now	Book a same-day appointment	Watch at home for up to 24 hours
Eye is swollen completely shut	Dog squints or blinks more than usual, but can open the eye	Mild clear discharge with no squinting
Blood in the eye, on the eyelid, or around the eye	Eye looks red or bloodshot	Occasional pawing at the face, but the eye looks clear and bright
Visible wound, cut, or tear on the eye or eyelid	Dog avoids bright light or keeps the eye half closed	No change in appetite, energy, or behavior
Object such as a grass seed, thorn, or splinter stuck in the eye	Eye discharge that is yellow, green, or thick	Eye looks normal within a few hours
Dog cannot open the eye at all	Dog flinches or pulls away when you touch near the eye	No discharge, no redness, no squinting
Eye looks cloudy, hazy, or the pupil looks different from the other eye	Dog has a known eye condition and symptoms are getting worse	Dog is eating, drinking, and playing normally
Sudden vision loss, dog bumps into furniture or seems disoriented	Both eyes are affected	Symptoms started after a known minor event, like a bump from a toy, and are already improving

If you are unsure which row fits, choose the more urgent option. A dog that seems fine but has a swollen eye can still have a serious problem. Pain in the eye often makes dogs quiet and withdrawn, so a calm dog is not proof that everything is okay.

What Is Most Likely Going On

The most common eye injury in dogs is a corneal ulcer. The cornea is the clear dome at the front of the eye. An ulcer is a scratch or erosion on that surface. It can come from a branch, a cat scratch, a piece of dirt, or even rubbing the face on carpet. A dog with a corneal ulcer usually squints, produces extra tears, and keeps the eye closed. The eye may look red or cloudy. Ulcers are painful, and they can deepen into the eye if not treated. The MSD Veterinary Manual describes corneal ulcers as a frequent cause of eye pain and discharge in dogs.

Another common problem is a foreign body. A grass seed, foxtail, or small piece of plant material can lodge under the eyelid or on the eye surface. The dog will squint and paw at the eye. The object may be visible or hidden. Even if you cannot see anything, a foreign body can still be present. Do not try to remove an object yourself. You may push it deeper or scratch the cornea further.

What Else It Could Be

Several other conditions look like an injury but are not caused by trauma. Glaucoma is increased pressure inside the eye. It makes the eye look red and cloudy, and the dog may be in severe pain. The eyeball can look larger than the other one. Glaucoma can cause blindness quickly and needs emergency treatment.

Uveitis is inflammation inside the eye. It can be caused by infection, immune disease, or injury. The eye looks red, the dog squints, and the pupil may be small. It is painful and needs a veterinary diagnosis.

Dry eye, also called keratoconjunctivitis sicca, happens when the eye does not make enough tears. The eye looks dull, red, and has thick discharge. It is not an emergency, but it does need treatment to prevent corneal damage.

A prolapsed gland, sometimes called cherry eye, is a red mass that appears at the inner corner of the eye. It looks alarming but is not usually painful. It still needs a veterinary visit, but it is not a sight-threatening emergency.

Why You Cannot Diagnose This at Home

The signs of these conditions overlap heavily. A red, squinting eye could be a scratch, a foreign body, glaucoma, or uveitis. You cannot tell the difference by looking. A veterinarian uses a special dye called fluorescein to check for corneal ulcers. They use a tonometer to measure eye pressure. They look inside the eye with a bright light and magnification. None of this can be done at home.

Home treatment is risky. Human eye drops, especially ones meant for red eyes, can harm a dog's eye. Some contain steroids that make corneal ulcers worse. Never give your dog any medication without a veterinarian's instruction. Dosing must come from the treating veterinarian because the wrong drug or the wrong amount can cause permanent damage.

What to Do While You Travel to the Vet

Keep your dog calm and quiet. Do not let them rub their face. You can place an Elizabethan collar, often called a cone, on your dog if you have one. If you do not have a cone, you can hold your dog gently or keep them in a small space. Do not put any drops, ointments, or rinses in the eye. Do not apply pressure to the eye. Do not try to flush it with water. Keep the dog away from other pets and from rough play.

Call the emergency clinic on your way so they know you are coming. Tell them what you saw and when it started. Bring any medication your dog takes regularly. Do not offer food or water unless the clinic tells you to, because they may need to sedate your dog for the examination. The American Animal Hospital Association advises pet owners to prepare for emergency visits by knowing their clinic's location and hours ahead of time. That preparation can save valuable minutes when every moment counts.

What You Can Safely Do at Home Right Now

If you have decided the injury is not an immediate emergency, or while you prepare to travel to the vet, there are a few things you can do. Keep them simple. Keep them gentle.

Prevent rubbing and scratching. A dog with eye pain will often paw at the face or rub on furniture. This can turn a minor scratch into a deep wound. Put an Elizabethan collar, often called a cone, on your dog. If you do not have one, ask your vet clinic if they can fit one when you arrive. Do not wait for the injury to worsen.
Keep the eye clean with plain saline. Use sterile saline solution made for contact lenses or wound irrigation. Do not use eye drops meant for humans. Do not use contact lens cleaning solution. Gently flush the eye with a steady, light stream. This can remove dust, grass seeds, or debris. Do not rub the eye. Do not try to pry the eyelids open if the dog resists.
Apply a cold compress for swelling. Wrap a clean cloth around an ice pack or a bag of frozen vegetables. Hold it gently against the closed eyelid for five minutes at a time. Do not press. Do not place ice directly on the skin.
Keep the dog calm and indoors. Limit running, jumping, and play. Bright sunlight can worsen pain. Keep the room dim if your dog seems sensitive to light.

What You Must Not Do

Some well-meaning actions can cause permanent damage.

Do not give human pain medication. Drugs like ibuprofen, acetaminophen, or naproxen are toxic to dogs. Even a small dose can cause kidney failure or liver damage. The American Veterinary Medical Association lists these as common household hazards for pets. Pain relief must come from a veterinarian who knows the correct drug and dose for your dog's size and health. See the ASPCA Animal Poison Control Center for a list of dangerous household items.
Do not use human eye drops. Many contain preservatives or steroids that can harm a dog's eye. Some steroid drops can worsen a corneal ulcer, which is a scratch or hole on the clear front surface of the eye. You cannot tell if an ulcer is present just by looking.
Do not apply ointments, creams, or home remedies. Tea bags, honey, or aloe have no place in an injured eye. They introduce bacteria and can cause chemical irritation.
Do not flush with tap water. It is not sterile and can carry bacteria. Use only sterile saline.
Do not wait to see if it improves on its own. Eye pain rarely resolves without treatment. A small ulcer can become a deep infection within 24 hours.

What to Write Down Before You Call

A few minutes of observation can help your vet make a faster, more accurate plan. Write down the following:

When did it start? Was the eye normal this morning? Did you see the injury happen?
What did you see? Be specific. Is the eye swollen shut? Is there blood? Is the pupil different in size compared to the other eye?
How many times in the last hour did your dog squint or paw at the eye? Count if you can.
Is your dog eating and drinking normally? Loss of appetite can signal significant pain.
Any other signs? Sneezing, nasal discharge, or a change in energy level can point to an infection that started in the sinuses or teeth.

Take a clear photo of the eye in good light. This helps the vet see the initial appearance, but it does not replace an examination.

Eye Injury Triage Table

Use this table to decide how urgent the situation is. When in doubt, choose the more urgent category.

Sign You Can See	What It Suggests	Action
Mild squinting, no discharge, eye looks clear	Possible minor irritation or scratch	Call your vet today for advice
Squinting plus yellow or green discharge	Possible infection or foreign body	Vet visit within hours
Eye swollen shut	Significant inflammation, ulcer, or foreign body	Emergency, go now
Blood in the eye or blood around the eye	Trauma, ulcer, or internal injury	Emergency, go now
A visible dark spot or crater on the clear surface of the eye	Corneal ulcer	Emergency, go now
The pupil looks cloudy, white, or blue	Possible ulcer, glaucoma, or lens problem	Emergency, go now
The dog cannot see, bumps into walls, or seems suddenly blind	Retinal detachment, glaucoma, or severe trauma	Emergency, go now
The eyeball looks larger than the other one, or the third eyelid is covering half the eye	Glaucoma or severe pain	Emergency, go now

The Red-Flag List

Some signs mean the eye is in immediate danger. If you see any of these, go to an emergency vet now. Do not wait for a regular appointment.

A visible ulcer. Look for a dull, grey, or cloudy spot on the clear part of the eye. Sometimes it looks like a dent or a crater.
Bleeding. Blood inside the eye, on the surface, or around the eyelid.
Sudden blindness. The dog walks into furniture, misses stairs, or does not blink when you move your hand toward the eye.
A bulging eye. One eye appears larger or pushed forward compared to the other.
A prolapsed eyeball. The eyeball has come out of the socket. This is a true emergency. Keep the eye moist with sterile saline and go immediately.
A foreign object stuck in the eye. Do not try to remove it. Go to the vet.
The dog is in severe pain. Continuous whining, trembling, or refusal to open the eye at all.

The MSD Veterinary Manual Pet Owner Version describes many of these signs as requiring immediate veterinary attention because they can lead to permanent vision loss within hours.

What the Veterinary Visit Looks Like

Your vet will start with a physical exam. They will check both eyes, also the injured one. They will look at the pupils, the clear surface, and the inside of the eye with a bright light.

Common tests include:

Fluorescein stain. A harmless orange dye is placed on the eye. It glows green under a blue light where the surface is damaged. This is the standard test for a corneal ulcer.
Tonometry. A small device touches the eye to measure pressure. High pressure indicates glaucoma, which is an emergency.
Eye pressure and tear tests. These check for dry eye or other underlying conditions.
Sedation or anesthesia. If the dog is in severe pain or the eye is swollen shut, the vet may need to sedate the dog to examine it safely.

The vet will ask about your dog's history, recent activity, and any exposure to chemicals or plants. Answer honestly. If you are unsure what caused the injury, say so.

Treatment depends on the diagnosis. It may include antibiotic eye drops, pain relief, anti-inflammatory medication, or surgery for a deep ulcer or a foreign object. Doses are calculated by your vet based on your dog's weight, age, and kidney and liver function. Never adjust a dose yourself.

Costs vary widely by region and clinic. A basic eye exam and stain might cost $50 to $150. An emergency visit with testing and medication can range from $200 to $800. Surgery for a severe ulcer or a prolapsed eye can cost $1,000 or more. These are general ranges only. Call ahead for an estimate if you can. The American Animal Hospital Association advises asking about treatment options and costs before you agree to a plan.

Your dog's vision depends on how quickly you act. Eye injuries do not heal on their own. They get worse. If you are unsure, treat it as an emergency and go in.

Common Mistakes Owners Make

Waiting to see if it improves. An eye injury can look mild for hours, then turn sight-threatening. Corneal ulcers, which are open sores on the clear front surface of the eye, can deepen quickly. If your dog is squinting, pawing at the eye, or keeping it shut, do not wait overnight. The American Veterinary Medical Association lists eye injuries among conditions that need prompt professional care.

Giving human medication. Never give your dog pain relievers from your own cabinet. Many human drugs, including certain anti-inflammatories, are toxic to dogs. Dosing must come from the treating veterinarian because the wrong drug or dose can cause stomach ulcers, kidney failure, or worse.

Rinsing with unknown solutions. Plain sterile saline is acceptable for flushing a foreign object, but contact lens solution, tap water with additives, or homemade salt water can irritate the eye further. If you are not certain the solution is sterile saline, do not use it.

Applying leftover ointments. Old antibiotic ointments from a previous pet or a different eye may contain steroids. Steroids can worsen a corneal ulcer dramatically, sometimes leading to rupture of the eye. Never use any eye product without explicit instruction from your veterinarian.

Letting the dog scratch. A dog in pain will rub the eye against carpet, furniture, or paws. This can turn a small scratch into a deep ulcer. An Elizabethan collar, often called a cone, is not optional after an injury. Keep it on until your vet says otherwise.

Common Mistake	Better Action
Waiting to see if the eye heals on its own	Call an emergency vet immediately if the eye is shut, squinting, or painful
Giving human pain medication	Get a veterinary exam and prescription, human drugs can poison dogs
Using old eye drops or ointments	Discard expired products, use only what your vet prescribes
Letting the dog rub or scratch the eye	Fit an Elizabethan collar and keep it on until healing is confirmed
Assuming a clear eye means no injury	Some ulcers and foreign bodies are visible only under special dye

How to Reduce the Risk of Another Eye Injury

Keep your dog's nails trimmed short. Long nails are a common cause of accidental scratches to the eye, especially in dogs that paw at their face.

When riding in a car, keep your dog secured in a crate or with a dog seatbelt harness. A sudden stop can throw a loose dog forward into the dashboard. Head injuries from car rides are a real and preventable cause of eye trauma.

Trim bushes and branches at dog head height in your yard. When walking in brushy areas, keep your dog on a leash to reduce the chance of a stick or thorn striking the eye.

Be careful with toys. Hard plastic edges, thrown sticks, and tennis balls that are too small can strike the eye. Choose soft, appropriately sized toys and supervise play.

If your dog has a history of eye problems, ask your veterinarian whether routine eye checks are wise. Some breeds, including brachycephalic dogs with flat faces and bulging eyes, are more prone to injury and should be examined regularly. The American Animal Hospital Association provides guidance on preventive care that includes regular physical exams.

Recovery and Ongoing Management

Recovery time depends on the injury. A simple superficial scratch may heal in a few days. A corneal ulcer can take one to two weeks. A surgical repair or a deep ulcer may require several weeks of treatment and rechecks.

Your veterinarian will likely prescribe medicated eye drops or ointments. Give them exactly as directed, at the correct intervals. Missing a dose can slow healing or allow infection to take hold.

Your dog will need to wear the Elizabethan collar until the eye is rechecked and confirmed healed. Many dogs resist the collar at first, but it is essential. Without it, your dog can undo days of healing in seconds.

You will return for follow-up visits. The veterinarian will apply a special dye to the eye to check the ulcer's depth and healing progress. Do not skip these rechecks, even if the eye looks better. Some complications are invisible without the dye test.

Watch for warning signs during recovery. If the eye becomes more swollen, the discharge turns yellow or green, or your dog seems more painful, call your veterinarian right away. These can signal infection or a failing repair. The MSD Veterinary Manual notes that eye conditions can change rapidly and require re-evaluation when signs worsen.

Most dogs recover fully with proper care. The key is prompt treatment, strict medication schedules, and keeping the collar on. Your veterinarian will tell you when the eye is safe.

Frequently Asked Questions

How long can I wait before taking my dog to the vet for a squinting eye?

Do not wait at all. A squinting eye is a pain signal, and pain in the eye often means a corneal ulcer or a foreign body. Both can worsen within hours. If your regular vet is closed, go to an emergency clinic. The American Veterinary Medical Association advises that eye injuries are among the conditions that require immediate professional care. Even if the eye looks better in the morning, the underlying injury may have progressed.

My dog's eye is swollen shut but there is no blood. Is that still an emergency?

Yes. Swelling that closes the eye indicates significant inflammation, infection, or trauma behind the eyelid. It can also mean a foreign body is lodged under the eyelid or a corneal ulcer has deepened. These conditions can threaten vision within a day. Seek emergency veterinary care now, not later. Do not try to pry the eye open or rinse it forcefully.

Can I use a warm compress on my dog's swollen eye?

No. A warm compress can increase inflammation and spread infection. It can also cause a dog in pain to jerk away, worsening the injury. The only safe home action before a vet visit is to prevent scratching with a cone and keep the dog calm. Do not apply any compress, hot or cold, without your veterinarian's instruction.

What if my dog's eye bleeding stops on its own?

Bleeding from the eye or the area around it suggests trauma to the eyeball, eyelid, or the socket behind the eye. Even if bleeding stops, internal damage may remain. The eye may have a deep laceration or a fracture of the bone around the eye. These require surgical evaluation. Take your dog to an emergency vet immediately, even if the bleeding has stopped.

Will my dog lose vision from an eye injury?

Many eye injuries heal without permanent vision loss, especially when treated early. The outcome depends on the depth of the ulcer, whether the eyeball is punctured, and how quickly treatment begins. Deep ulcers and penetrating injuries carry a higher risk of scarring or blindness. Your veterinarian can give you a more specific outlook after examining the eye and running tests.

How do I give eye drops to a dog that hates it?

Have one person gently hold the dog's head while you pull the lower eyelid down slightly and place the drop in the pocket formed there. Do not touch the dropper tip to the eye. Give a treat immediately after each dose. If the dog resists strongly, wrap them in a towel and have your veterinarian show you the technique at the recheck visit. Never force the eye open if it is painful.

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References and Further Reading

This article is general educational information for pet owners. It is not a substitute for veterinary diagnosis, examination, or treatment. If your pet is showing severe or rapidly worsening signs, contact an emergency veterinary hospital immediately.