Vertical optic disk diameter: discrepancy between planimetric and SLO measurements.

摘要: PURPOSE To compare measurements of the vertical diameter optic disk using Heidelberg Retinal Tomograph (HRT) and planimetric methods. METHODS On HRT, three were made on 32 eyes from a composite image circle draw facility compared with central tomographic cuts. These repeated by second observer. Measurements those obtained photographs corrections described Bengtsson Krakau. RESULTS For there was minimal intraobserver variation, coefficient variation (1.515% to 1.882% for two observers). Interobserver also small (CoV 1.969%). The authors found closest agreement HRT regression analysis correction 3 (r = 0.8258). significantly smaller (P < 0.0001) constant amount 0.13 mm across range size. There significant difference between measurement cut 0.0003 observer 1). CONCLUSIONS are than and, therefore, not interchangeable.