Binocular vision recovery in bilateral keratoplasty

Purpose. To determine the benefit of bilateral penetrating keratoplasty wit h regard to binocular vision. Methods. We compared patients who underwent c orneal transplantation bilaterally with patients who had successful corneal transplantation in one eye and corneal disease in the other eye. Specifica lly, changes in fusion, stereopsis, and binocular vision function were anal yzed. A questionnaire regarding performance of daily tasks was given. Resul ts. Patients with bilateral keratoplasty performed better in all the analyz ed functions. Fusion was achieved by 81.25% in the unilateral group versus 100% in the bilateral group (p = 0.15). Stereopsis was present more in the bilateral group (100% vs. 62.5%, p = 0.008) and the quantity of stereopsis was significantly better in the bilateral group (121 seconds of are vs. 1,2 84 seconds of are, p = 0.014). 88.8% of the patients subjectively improved in daily activities after second eye surgery. Conclusion. There are objecti ve and subjective improvements after bilateral penetrating keratoplasty.