FrenchBulldogs.co.uk
An eye held shut is the eye sign owners search most, after "signs a dog eye ulcer is healing" and "conjunctivitis eye drops". This page gives the published thresholds for every eye sign, in the Kennel Club's and the PDSA's own words, then what each sign tends to be in a breed whose eyes sit forward in a shallow socket, then what to do in the first minutes. No verdict; the phone call does that, and for the eye it does it quickly.
The thresholds
The Kennel Club's eye-emergencies page describes the dog that will "blink a lot, keep their eyes tightly closed, produce more tears than usual", a red white of the eye, and "Sudden blindness may affect one eye, or both eyes", and it says of every cause it lists that they "require urgent veterinary assessment" and to "always contact your vet immediately". The PDSA on an eye held closed: "Contact your vet ASAP if you notice your dog blinking more than usual or think they may have painful eyes. Left untreated, the problem could become much worse", with an urgent appointment for "signs of extreme pain such as being off their food, lethargic, or crying/screaming". On ulcers: "Ulcers often appear suddenly and get rapidly worse. However, eyes heal quickly so with vet treatment an ulcer is likely to heal within a few days (unless complications develop). Leaving an ulcer without veterinary treatment can result in loss of an eye." There is no eye sign on either page with a wait attached to it.
What the sign tends to be in this breed
Held shut, squinting, blinking
A corneal ulcer until the vet says otherwise. The PDSA's list of ulcer signs is the list of a shut eye: "Red, inflamed, blood shot eye; An obvious hole or crater on the surface of their eye; Closed eye or squinting; Blinking more than usual; Weepy eye; Cloudy eye; Scratching and rubbing at the face and eye; Avoiding bright lights." Flat-faced eyes are exposed, dry more easily and get scratched more, and the ulcer page explains why the hours matter and why the collar is the treatment.
Red and weepy, but open
The same call at a different speed. In this breed a red, open, weepy eye is often dry eye, an eyelid that rolls in (entropion) or lashes that grow the wrong way (distichiasis), and a pink lump in the corner is cherry eye. Conjunctivitis is the diagnosis the search wants and the drops from the pharmacy are not the answer, because a scratched cornea looks like conjunctivitis from across the room and some drops make an ulcer worse; the vet stains the eye first and that takes a minute.
Cloudy
A bluish haze in an older lens is usually nuclear sclerosis, which is age; a white, opaque lens with changed vision is a cataract, which is treatable. A cloudy cornea, the front of the eye rather than the lens, is on the PDSA's ulcer list and is today.
Bulging, or out
The Kennel Club: "Eyeball prolapse (where the eyeball may pop out of position) is most commonly seen in brachycephalic dogs (dogs with a characteristic flattened face and a short muzzle) because the socket of the eye (the orbit) where the eyeball is located is particularly shallow." It is the breed's own eye emergency. Keep the eye wet with clean water or saline on a damp cloth, do not push it back, and go.
The first minutes
For a chemical splash, the Kennel Club: "carefully rinse the eye with plenty of water straight away". For everything else, stop the rubbing before the call if you can, because a dog that can reach its own eye will rub it and make an ulcer worse; the buster collar is the treatment and stays on until the vet says. Nothing from the cupboard goes in the eye. And the collar rule holds every day, not only today: in a 2025 study, just wearing a collar standing still raised the pressure inside the eye in flat-faced dogs, and a harness did not, which the harness page covers.
Have ready for the call
- Which eye, and whether it is open, half shut or shut.
- When it started, and whether the dog was in undergrowth, playing, or near anything that could splash.
- Whether the dog is rubbing it, and whether you have stopped that.
- A photo in good light, from the front and the side.
- Whether the dog is off its food or crying, which the PDSA counts as extreme pain.
What this page is not
A verdict, and it is the one page in this set where the sources give no waiting period at all. Every line is the Kennel Club's or the PDSA's wording, attributed; the breed pages behind each sign are sourced in turn. An eye is the organ where "see how it is in the morning" costs the most.
Common questions
My French Bulldog is holding one eye shut. What should I do?
Call the vet now; the PDSA says contact them as soon as possible for blinking more than usual or a painful eye, because left untreated it gets worse, and an eye held shut in this breed is a corneal ulcer until the vet says otherwise. Stop the dog rubbing it, put nothing in it, and take a photo in good light. Off its food or crying counts as extreme pain and an urgent appointment.
How do I know if my dog's eye ulcer is healing?
You do not, by eye; the vet does, by staining it. The PDSA says that with treatment an ulcer is likely to heal within a few days unless complications develop, and that leaving one can cost the eye. The collar stays on until the vet confirms it has healed, not until the eye looks better, because a dog that can reach a half-healed ulcer will rub it open.
Can I use human eye drops or conjunctivitis drops on my French Bulldog?
No. A scratched cornea looks like conjunctivitis from across the room, and some drops make an ulcer worse. The vet stains the eye to rule the ulcer out before choosing drops, and that takes a minute. Nothing from the cupboard goes in a dog's eye.
Why is my French Bulldog's eye red?
In this breed a red, open, weepy eye is often dry eye, an inward-rolling eyelid, or lashes growing the wrong way, and a pink lump in the corner is cherry eye; a red eye that is also held shut is an ulcer until proven otherwise. The Kennel Club treats every cause on its eye page as needing urgent assessment. Which one it is decides the treatment, and only the vet can tell.
My French Bulldog's eye is bulging. Is that an emergency?
Yes. The Kennel Club says eyeball prolapse is most common in flat-faced breeds because the socket is shallow. Keep the eye wet with clean water or saline on a damp cloth, do not push it back, and go to the vet now, phoning on the way.
My old French Bulldog's eye looks cloudy. Is it a cataract?
A bluish haze deep in an older lens is usually nuclear sclerosis, which is age and does not blind. A white, opaque lens with changed vision is a cataract, which is treatable, and the cataract page has the difference. A cloudy cornea, the front surface, is on the ulcer list and is a same-day call.
Related reading
General care guidance, not veterinary advice. If your dog is unwell, contact your vet.