Relationship between contrast sensitivity and spherical aberration

摘要: PURPOSE: To find a contrast sensitivity test that can be used clinically to evaluate interventions aimed at minimizing spherical aberration and determine the circumstances under which these tests should performed. SETTING: Laboratory of Experimental Ophthalmology, University Groningen, The Netherlands. METHODS: Contrast were performed using 2 experimental designs. Design 1 was with natural pupil mesopic photopic conditions. 5.0 mm artificial after cycloplegia conditions only. Two computerized (vertical sine-modulated gratings [VSG] Holladay circular patterns [HACSS]) 5 chart (Pelli-Robson, acuity-measuring letter charts low [2.5% 10%], VectorVision, edge sensitivity) used. Spherical assessed Hartmann-Shack wavefront analyzer. RESULTS: Forty-nine healthy subjects aged 20 35 years (n = 24) 55 70 25) participated. showed significant relationship between HACSS 3 cycles per degree (cpd) (P .03) 6 cpd .01) VSG .01). yielded no relationships. CONCLUSIONS: Using an pupil, established but not tests. No pupils either lighting condition. Chart are unsuitable for uncovering differences related in aberration, as typically found phakic eyes.