Histopathological Evaluation of A Tissue Fragment Obtained In Conjunctivo-Müllerectomy Surgery

Abstract Purpose To evaluate striated skeletal muscle fibers (upper eyelid levator muscle) in specimens taken from conjunctivo-müllerectomy surgery and correlate the surgical response of elevation greater than 2 mm in this surgery. Methods Histopathological analysis of 20 excised conjunctivo-müllerectomy fragments for treating involutional ptosis of any magnitude with a 10% positive and satisfactory phenylephrine test to check for skeletal muscle fibers. Results All analyzed tissue samples only had conjunctiva and smooth muscle tissue. We attest to the absence of striated muscle fibers in these samples. Conclusion There are no upper eyelid levator muscle fibers in the excised tissue in conjunctivo-müllerectomy surgery. The surgical response of elevation greater than 2 mm in this surgery may only be due to the closeness of the upper eyelid levator muscle to the superior border of the tarsal plate.