Interferometric visual acuity testing in anterior segment disease
J. M. Enoch, H. E. Bedell and H. E. Kaufman
Preoperative and posteroperative visual acuities for Landolt ring targets
and for a grating target of comparable retinal illuminance produced by
two-beam interference were assessed in patients with anterior segment
disease. Good preoperative interferometric acuities (6/12 or better) were
found in over half of the cases in which Landolt acuities were 6/90 or
worse. In general, good preoperative interferometric acuities were
predictive of good postoperative Landolt acuities. However, poor
interferometric acuities in patients with opacified media did not preclude
good Landolt acuities postoperatively. We conclude that interferometric
acuity testing can provide valuable information about potential macular
resolution capacity in some cases. Both the strengths and weaknesses of
interferometric acuity testing must be appreciated for successful
application.
