Wow, Lynne, what perfect timing! I was just about to post about this same topic.
Over the last week or so I noticed that one of Toby's eye's has a cloudy blue cast to it, depending on the angle you look at him from. Toby will be 10 in April.
And in the last couple of days, he was squinting/shutting that eye, as if it were irritated.
I took him to our vet today and she said that he has no lesions on his cornea, etc. but she believes he may have glaucoma. She said she thinks it's glaucoma but not cataracts.
She recommended Toby get seen by the ophthalmologists at the UF vet school so Toby and I have an appointment there tomorrow morning at 8:00.
I will let you know what I find out.
Suggestion, make sure you take her to a vet who has specialty training in ophthalmology. That way you are not wasting your money. Our vet said she has some basic ways and tools for testing for glaucoma but a definitive diagnosis and treatment should be made by a veterinary eye specialist.