elow are common conditions that affect the eyes of dogs this age. At this age, cancer of the eye must also be considered as a possible cause for ocular disease. It may seem unusual that melanoma is listed as a possible cause for ocular disease, as most associate this type of skin with the skin. However, it is included here as a common cancer seen in the canine eye, originating from the pigment cells of the iris. If you still seek further information, please visit our Ask The Vet page to submit a one on one consultation with a licensed veterinarian 24 hours a day, 7 days a week.