Topographical analysis of the cornea with the surgical keratometer.
D001251:Astigmatism / Q000209:etiology; D002387:Cataract Extraction / Q000009:adverse effects; D003315:Cornea / Q000033:anatomy & histology / Q000601:surgery*; D006801:Humans; D013525:Surgical Instruments; D013536:Suture Techniques; D014787:Vision Tests / Q000295:instrumentation