CPT® Code 67346

An extraocular muscle biopsy is a surgical procedure that involves the removal of a small sample of tissue from one of the muscles that control eye movement. The extraocular muscles are responsible for the precise movements of the eye, allowing for proper vision and coordination. During this procedure, an ocular speculum is utilized to keep the patient's eye open, providing the surgeon with a clear view and access to the muscle. The procedure begins with incisions made through the conjunctiva, which is the thin membrane covering the eye, and the sclera, the white outer layer of the eyeball. This careful approach ensures that the muscle is adequately exposed while minimizing damage to surrounding tissues. Once the target muscle is identified, a small portion of the muscle tissue is meticulously excised. It is crucial that this sampling is performed with precision to preserve the overall function of the eye muscle, thereby preventing any adverse effects on eye movement. After the biopsy is completed, the incisions are closed, concluding the procedure.