Canine eye melanoma: protecting comfort and vision

These tumours can arise from pigment-producing cells inside or around the eye. Their behaviour varies by location, so colour alone cannot show whether a spot is harmless, growing, painful, or likely to spread. A veterinary eye examination is needed to define what the lesion is doing.

A veterinary ophthalmologist examines the surface and internal structures of both eyes, measures eye pressure, and assesses vision. Ultrasound can help when the deeper part of a mass cannot be seen clearly. Photographs and measurements may document change over time when monitoring is appropriate. If treatment or removal provides tissue, laboratory examination can classify the tumour. Additional imaging may be proposed when its features raise concern about extension beyond the eye.

Book a veterinary ophthalmology review rather than waiting for a dark area to change visibly. Management can range from structured monitoring to local treatment or removal of the eye, depending on growth, position, eye pressure, pain, vision, and concern about tumour behaviour. Focused radiation techniques may be considered in selected cases where suitable expertise and equipment are available.

Use prescribed drops on schedule and prevent rubbing with a protective collar if instructed. Take comparison photographs only in consistent light and without flash close to the eye; photographs do not replace an examination. Track squinting, redness, cloudiness, discharge, pupil shape, navigation in dim light, and any new bump around the eye.

An eye that becomes suddenly painful, tightly closed, enlarged, very red, cloudy, or visibly injured needs same-day veterinary assessment. Sudden loss of vision, bleeding inside the eye, a fixed or misshapen pupil, or repeated pawing at the face also deserves urgent attention. After treatment, report wound opening, increasing swelling, pus-like discharge, persistent vomiting, or inability to take prescribed medicine without delay.

Ask where the tumour starts, whether it is changing eye pressure or vision, and what features determine monitoring versus treatment. Request clear instructions on drop timing, pain signals, activity restrictions, and the next examination. If removal is discussed, ask how tissue will be analysed, how recovery is managed, and what adaptations may help a dog with reduced vision.