Why are my old guinea pig's eyes white and does she close them often?
Thank you for your question about Rosie. From your description, there are a few possibilities for what this may be. Guinea pigs can develop cataracts as they age, and this makes the lenses of their eyes look white. The lens is in the center of the eye, where the pupil is. These can be irritating and can also be painful if the pressure in the eye increases as a result of the cataracts being present. Another condition that can occur in guinea pigs is osseous metaplasia. This occurs on the rim of the iris, which is the colored part of the eye. What occurs with this process is that bone is put down around the eye, making it look white. This process isn't typically painful unless it gets severe.
I would recommend having Rosie evaluated by a veterinarian who is familiar with guinea pigs (and some veterinary ophthalmologists are as well, depending on your area). They can help to determine what portion of the eye is looking weird/white, and if the condition is painful or not. Depending on what they find, they may have medications that they prescribe to Rosie, including pain relievers. Please do not give Rosie any human medications, as many of them are harmful to our furry friends.
I hope that gives you a place to start, and I wish you and Rosie the best!
Updated on September 23rd, 2025