SUMMARY
We studied 45 patients who were submitted to scleral fixed IOL implantation from July 1987 to June 1991. We checked the efficiency of the SRK-II formula for IOL power calculation in scleral fixed implants, and performed a linear regression estimation, using the least square method, to determine a new formula (RAISA) suitable to the IOL estimation in that kind of procedure.
The difference between the obtained estimatives using SRK-II and RAISA was small, for eyes with axial length between 22 and. < 24.5, suggesting that the SRK-II can be used, in principle, for the calculation of the IOL power in scleral fixed implants, positioned at 2.5 mm from the limbus.