Sudden Blindness
Sight lost over hours to days. In dogs often SARDS (sudden, painless, irreversible); in cats most often a detached retina from high blood pressure (kidney or thyroid driven), which can sometimes be reversed if treated fast. The eyes can look normal, so it is a same-day vet visit to find the cause.
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Expert guides
My Cat Suddenly Went Blind: Check the Blood Pressure
A cat that has, in the space of a day or even overnight, started walking into furniture, missing the sofa, freezing in the middle of the room with both pupils wide and black needs one thing from you before any of the biology. So I'll give you that first.
My Pet Suddenly Went Blind: What to Do Right Now
Here is the short version, because it matters more than anything else on this page. Sudden loss of sight needs to be seen today, not at the weekend, not "if it's no better in a few days." Ring your vet or the nearest emergency clinic now and tell them your pet has suddenly gone blind....
Sudden Versus Slowly-Noticed Blindness: Why It Matters
"It happened overnight, doctor. One day she was fine, the next she was walking into the furniture." It's one of the most common things owners say when an older pet has lost its sight, and it nearly always comes with a flush of guilt. They're braced for me to confirm their worst fear, that they...
High Blood Pressure and Your Pet's Eyes: The Link Owners Miss
High blood pressure sounds like a human problem, the sort of thing a doctor raises at a midlife check-up. So when I tell an owner that their cat's sudden blindness, or the red haze that appeared in their dog's eye overnight, comes down to blood pressure, the reply is nearly always the same: "pets get...
Retinal Detachment: Causes, Urgency and What Can Be Saved
"Detached retina" is a phrase that lands hard. Say it across the consulting table and most owners picture an eye coming apart, sight gone for good in an instant. The real picture is calmer than that. A detached retina is a layer coming unstuck, not an eye falling apart, and whether anything can be saved...
SARDS: Sudden Blindness in Dogs With No Warning
A dog who was fine last week is suddenly walking into doorframes. The eyes look completely normal, there's no redness, nothing obviously hurts, and yet the dog plainly cannot see. This is one of the handful of diagnoses I genuinely dread giving. The owner is searching for an accident to explain it and there isn't...
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