Eyeball Cancer In Dogs. These are small structures that are located in many parts of the body, and can often be felt along the jaw, in front of the shoulders, in the armpits and groin area, and behind the “knee” area of dogs. This could lead to an eye infection or corneal ulceration (an open sore on the cornea), which are very painful, and can cause redness, tearing, discharge, and squinting or closed eyes.

Uveal canine lymphoma (canine ocular lymphoma): Orbital tumors in dogs cause the eyeball to protrude forward and produce swelling of the conjunctiva, cornea, and eyelid. This additional eyelid is a whitish pink color, and it is found under the lower eyelids on the inside.