This is a cat with a prolapsed nictitans gland, a so-called cherry eye. While not unheard-of (see Chahory et al Three cases of prolapse of the nictitans gland in cats. Vet Ophthalmol. 2004;7:417-9 and three other papers suggesting a breed predisposition of the Burmese) the condition is seen much more commonly in the dog. As in that species, replacement, here using the mucosal pocket technique is advisable.