Rebecca F. Silverman, Megan Kasetty, Filippos Vingopoulos, Raviv Katz, June Cho, Luis Andres Lesmes, David N. Zacks, Leo A. Kim, and John B. Miller
BACKGROUND AND OBJECTIVE: To characterize contrast sensitivity function (CSF) in patients with retinal vein occlusion (RVO) compared to age-matched controls us- ing novel computerized contrast sensitivity (CS) testing with active learning algorithms. PATIENTS AND METHODS: CSF was prospectively mea- sured in RVO patients with visual acuity (VA) greater than 20/200 and age-matched controls using the novel Manifold Contrast Vision Meter implementing quantita- tive CSF testing. Outcomes included area under the Log CSF (AULCSF), contrast acuity (CA), and CS thresholds at 1, 1.5, 3, 12, and 18 cycles per degree (cpd). A sub- analysis was performed on RVO eyes with good acuity (VA ≥ 20/30). RESULTS: Twenty-two eyes with RVO and 63 control eyes were included. Mean AULCSF (± standard devia- tion) in RVO eyes was 0.817 (0.28) compared to 1.217 (0.28) in controls (P < .0001). Mean contrast acuity in the RVO group was 1.054 (0.19) versus 1.286 ± 0.16 in con- trols (P < .0001). For individual spatial frequencies, CS loss at 6.0 cpd was most prominent in the RVO group. In 10 RVO eyes with VA of 20/30 or greater, mean AULCSF was 0.978 versus 1.217 in control eyes. (P = .008). CONCLUSIONS: CSF in eyes with RVO was found to be significantly reduced compared to age-matched con- trols. CSF seems to be a promising visual function end- point with potential applications in clinical practice and future clinical trials.