cherry eye

:  a protruding reddish mass occurring in the inner corner of the eye especially of young dogs that results from thickening, swelling, and prolapse of the lacrimal gland of the nictitating membrane Cherry eye is most frequently a congenital condition typically seen in dogs younger than 2 …—John de Jong, The Boston Herald, 12 Jan. 2014 In rare instances—usually with puppies and young dogs—it is possible for cherry eye to resolve on its own. This is atypical, however, and surgery is usually needed to correct the problem.—Karen Lee Stevens, Dog Watch, July 2008