Note that a dog may be CERFed clear when it is younger before the PRA has become detectable. Prolapse Of The Gland Of The Third Eyelid 1995 - 1 Protrusion of the tear gland associated with the third eyelid. The mode of inheritance of this disorder is unknown. The exposed gland may become irritated. The two latter forms are associated with vision impairment or blindness.
Retinal dysplasia is known to be inherited in many breeds.
The genetic relationship between the three forms of the disease is not known for all breeds. Mastiffs with the last two forms should not be bred. All rights reserved.