10/07/2026
This morning’s case: Equine Enucleation for Squamous Cell Carcinoma 👁️🐴
This morning, Doc performed an enucleation, which is the surgical removal of the globe (eyeball), after this horse developed ocular squamous cell carcinoma (SCC).
Squamous cell carcinoma is one of the most common tumors affecting the equine eye and surrounding tissues. Horses with white faces, lightly pigmented skin, or little pigment around the eyes can be at increased risk. SCC may involve the eyelids, conjunctiva, third eyelid, or the globe itself and can become painful and locally invasive as it progresses.
Doc began by placing the horse under standing sedation, followed by local anesthetic blocks using lidocaine to provide additional pain control during the procedure.
Enucleations can also be a fairly bloody procedure. The tissues surrounding the eye are highly vascular, meaning they contain a significant blood supply. Because of this, there can be quite a bit of bleeding during surgery, which can look dramatic, but hemorrhage is carefully controlled throughout the procedure.
Although removing an eye sounds like a major change, horses are incredibly adaptable. Once the painful or diseased eye is removed and the surgical site has healed, many horses adjust remarkably well to having monocular vision — vision from one eye.
When the tumor can be completely removed and there is no significant spread into the surrounding tissues, the prognosis for recovery can be very good. After an appropriate healing period, many horses are able to return to riding, showing, working, and doing the same jobs they did before surgery.
It really is amazing how quickly horses can compensate and adjust. What seems like such a major surgery can ultimately give them relief from a painful, cancerous eye and allow them to get right back to enjoying life and doing what they love. ❤️