A defect of the upper eyelid in a flock of piebald sheep.
D000818:Animals; D001766:Blindness; D005128:Eye Diseases / Q000150:complications / Q000235:genetics / Q000662:veterinary*; D005143:Eyelids; D009915:Orbit / Q000473:pathology; D012756:Sheep; D012757:Sheep Diseases