Blindness is one of the most common problems in dogs it is affecting many of them from what i have read from researching.
Does she have any health problems?
If so it could of triggered it.
Some dogs are blind since birh.
And over time their vision just goes down hill.
Things that can cause blindness in dogs:
Galucoma
Injury to the eye or eye tumors
Optic nerve disease etc...
the list goes on and on.
Diabetes is one of the main ones to that causes this also.
I would take her to the vet just to get her checked out health wise to see if it is possible any of these things triggered it.
I thik that eye infections can cause temporary blindness im not sure hmmm... good luck and i hope its nothing serious!

Buddy answered on 11/29/12. Helpful? / 0

Blindness in dogs has many different causes. There are cataracts, PRA, retinal dysplasia, just to mention a few. In cataracts, there are also many different kinds, some affect the dog at a very young age, some at middle age and some at old age.
Each dog breed has different inherited types of blindness, and having a mixed breed thickens the soup even more.
The only true way to find out what is wrong with your dog's vision is to get her an appointment with a veterinary opthamologist. They have the education as well as the necessary equipment to diagnose what exactly is wrong with your dog. The average GP Veterinarian does not have the necessary equipment to perform these exams on retinas, optic nerves, etc, and would most likely only be guessing at a cause.
Good luck!

Toto, CD, RN, CGC answered on 11/29/12. Helpful? / 0