Hypertrophy of nictitans gland: a condition where the gland of the third eyelid is abnormally large. (thedogplace.org)
Ophthalmological disorders (10.5 %) were the fifth most common grouped - level disorder for French Bulldogs, with conjunctivitis (3.2 %), prolapsed nictitans gland (2.6 %) and ulcerative keratitis (2.1 %) in the top 20 most common fine - level disorders for the breed. (cgejournal.biomedcentral.com)
Cherry Eye is the term used to refer to canine nictitans gland prolapse, a common eye condition in various dog breeds, including Cocker Spaniels, where the gland of the third eyelid known as the nictitating membrane prolapses and becomes visible. (campcocker.com)