Cats that are not vaccinated can get severe eye infections to the point even of losing their eyes if untreated. (allfelinehospital.com)
It was also discovered that she was suffering from a pretty severe eye infection. (pawmettolifeline.org)
Lola and Toph were found at a feed store in Mexico and brought to Friends of Cats with severe eye infections that resulted in surgical removal of their eyes... (sandiegopetsmagazine.com)