Torsional diplopia following macular translocation with scleral shortening

We reviewed 15 cases treated by macular translocation surgery with scleral shortening regarding torsional diplopia. All the cases were unilaterally affected including: age-related macular degeneration 6 eyes, polypoid retinochoroidal neovascularization 6 eyes, myopic retinochoroidal neovascularization 2 eyes, and angioid streaks 1 eye. The ages ranged from 39 to 78 years, average 65.2 ± 9.9 years. At one month after surgery, torsional diplopia was significantly more frequent in patients older than 70 yers (p = 0.035), lesser difference in visual acuity between both eyes (p = 0.032), larger amount of macular translocation (p = 0.015), and higher threshold of foveal retinal sensitivity in operated eyes (0.024). Following factors were not related to postoperative diplopia: visual acuity in operated eyes prior to surgery, initial eye position, binocular function, and objective cyclodeviation.