Sheep Squinting or Keeping an Eye Closed: Causes & What to Do
- Squinting, blinking hard, or holding an eye shut usually means the eye is painful, not that the sheep is being dramatic.
- Common causes include infectious keratoconjunctivitis (pinkeye), hay or seed-head irritation, a corneal scratch or ulcer, eyelid injury, and less often foreign material stuck under the lid.
- Call your vet the same day if the eye looks cloudy, blue-white, swollen, very red, injured, or if more than one sheep is affected.
- Isolate affected sheep when possible, reduce dust and bright sun, and do not use leftover eye medications unless your vet tells you to.
- Typical U.S. cost range for a farm-call eye exam and basic treatment is about $150-$400, with higher totals if sedation, staining, injections, or surgery are needed.
Common Causes of Sheep Squinting or Keeping an Eye Closed
One of the most common causes is infectious keratoconjunctivitis, often called pinkeye. In sheep, this can cause blepharospasm (tight squinting), tearing, conjunctivitis, and corneal cloudiness. It is painful, may spread within a flock, and early treatment matters because severe cases can lead to deeper corneal damage or vision loss.
Not every closed eye is an infection. Dust, hay stems, grass awns, seed heads, and other plant material can irritate the surface of the eye or get trapped under the eyelid. That irritation can quickly turn into a corneal scratch or ulcer, which is one reason a sheep may suddenly keep the eye shut, avoid light, or rub its face.
Trauma is another common cause. A poke from fencing, brush, horns, feeders, or another sheep can injure the eyelid or cornea. Even a small scratch can be very painful. If the eye looks cloudy, has a visible white spot, or seems sunken or swollen, your vet should examine it promptly.
Less common causes include entropion in lambs (an eyelid rolling inward so lashes rub the cornea), severe conjunctivitis, or skin disease around the eye. Because several different problems can look similar from a distance, a painful eye should be treated as a medical issue rather than watched casually.
When to See the Vet vs. Monitor at Home
See your vet the same day if your sheep is keeping the eye fully closed, the eye is cloudy or blue-white, there is obvious swelling, pus-like discharge, a visible wound, or the sheep seems off feed or isolated from the flock. These signs raise concern for a corneal ulcer, deeper injury, or a more contagious eye infection.
You should also call promptly if multiple sheep develop tearing or squinting, because flock outbreaks of pinkeye can happen. Fast attention may reduce pain and may help limit spread. Young lambs, sheep with reduced appetite, and animals that cannot navigate normally deserve quicker evaluation.
Careful monitoring at home may be reasonable for a few hours if the eye is only mildly watery after obvious dust exposure and the sheep is otherwise bright, eating, and not rubbing the face. Even then, if the squinting continues beyond the day, returns, or worsens, your vet should check the eye.
Do not wait at home if you suspect a foreign body, chemical exposure, penetrating injury, or sudden blindness. Eye problems can change quickly, and treatment that helps one cause may make another cause worse.
What Your Vet Will Do
Your vet will start with a close eye exam, often looking at the eyelids, conjunctiva, cornea, and the area under the lids. They may check whether the sheep is painful in bright light, whether the cornea is cloudy, and whether there is discharge, swelling, or evidence of trauma.
A common next step is a fluorescein stain test, which helps show scratches and corneal ulcers. Your vet may also evert the eyelids to look for hay, seeds, or other debris. In some cases, they may use topical anesthetic, sedation, or gentle restraint so the eye can be examined safely and thoroughly.
Treatment depends on the cause. Options may include removing debris, prescribing ophthalmic medication, giving injectable medication when appropriate, protecting the eye, and recommending temporary isolation from the flock if pinkeye is suspected. Because sheep are food animals, your vet also has to choose medications carefully and discuss withdrawal times when relevant.
If the eye is severely ulcerated, ruptured, or not improving, your vet may recommend more intensive care, repeat exams, or referral. The goal is pain control, corneal healing, and protecting vision while using a plan that fits the sheep, the flock, and the farm setup.
Treatment Options
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Farm call or clinic exam
- Basic eye exam and eyelid check
- Fluorescein stain if available
- Removal of obvious debris if superficial
- Targeted medication plan from your vet
- Isolation and environmental management advice
Recommended Standard Treatment
- Complete farm-call eye exam
- Fluorescein staining and repeat recheck
- Topical and/or injectable treatment selected by your vet
- Pain-control plan when appropriate
- Flock-level guidance for contagious cases
- Documentation of meat or milk withdrawal guidance when relevant
Advanced / Critical Care
- Sedation or stronger restraint for detailed exam
- Repeat staining and advanced ocular assessment
- Management of deep ulcer, severe trauma, or nonhealing eye disease
- Surgical procedures such as eyelid correction or eye protection when indicated
- Referral or hospital-level care for vision-threatening cases
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Sheep Squinting or Keeping an Eye Closed
Bring these questions to your vet appointment to get the most out of your visit.
- Does this look more like pinkeye, a corneal ulcer, or trauma?
- Is the cornea scratched or ulcerated, and did the fluorescein stain show damage?
- Should this sheep be separated from the flock, and for how long?
- What signs would mean the eye is getting worse and needs a recheck right away?
- What treatment options fit this case if I need a more conservative care plan?
- Are there medication withdrawal times I need to follow for meat or milk?
- Could dust, hay, seed heads, or fencing be contributing to this problem on my farm?
- If this does not improve in 24 to 48 hours, what is the next step?
Home Care & Comfort Measures
While you are arranging care, move the sheep to a clean, shaded, low-dust area with easy access to water and feed. Bright sunlight, wind, and dusty bedding can make a painful eye worse. If possible, reduce exposure to tall seed heads, rough hay, and anything that could keep irritating the eye.
If your vet advises home monitoring, watch for more tearing, cloudiness, swelling, rubbing, loss of appetite, or other sheep developing similar signs. Those changes mean the plan may need to be adjusted quickly. Keep notes on which eye is affected and whether the sheep is eating and moving normally.
Do not put human eye drops, steroid eye medications, or leftover livestock antibiotics into the eye unless your vet specifically recommends them. Some products can worsen ulcers or complicate diagnosis. Since June 11, 2023, many medically important livestock antibiotics in the U.S. require veterinary prescription oversight, which is another reason to involve your vet early.
Good flock management also matters. Separate obviously affected sheep when practical, improve fly and dust control, and clean up sharp or irritating forage and fencing hazards. Home care supports recovery, but a sheep that keeps an eye closed should not be treated as a minor issue.