UNLABELLED: The evaluation of large series of cataract extractions is most feasible using a computer. We have computerized the details of 7503 cataract extractions (performed in the years 1961-1975). The analysis is based on a new computerreadable form. Its application is shown in two examples for comparing surgical results: 1. cataract extractions by forceps, suction cup or cryoprobe, the surgeon wearing magnifying-goggles; 2. cataract extractions by cryoprobe using the surgical microscope. The evaluation of results had been done separately for residents and experienced surgeons. RESULTS: In experienced surgeons the percentage of uncomplicated extractions increased considerably with the cryoprobe (86.5%) as compared to 77% using the suction cup. The surgical microscope in that series have no significant increase of the success rate (cryoprobe 88.4%). Residents had more advantages from both technical aids: no microscope, suction cup: 73.5%, cryo: 82.5%, with microscope, cryo: 90.3%. Their results compare well with those of the experienced surgeons, since they are given straight-forward cases only and they operate under the strictest supervision of an experienced surgeon.
UNLABELLED: The evaluation of large series of cataract extractions is most feasible using a computer. We have computerized the details of 7503 cataract extractions (performed in the years 1961-1975). The analysis is based on a new computerreadable form. Its application is shown in two examples for comparing surgical results: 1. cataract extractions by forceps, suction cup or cryoprobe, the surgeon wearing magnifying-goggles; 2. cataract extractions by cryoprobe using the surgical microscope. The evaluation of results had been done separately for residents and experienced surgeons. RESULTS: In experienced surgeons the percentage of uncomplicated extractions increased considerably with the cryoprobe (86.5%) as compared to 77% using the suction cup. The surgical microscope in that series have no significant increase of the success rate (cryoprobe 88.4%). Residents had more advantages from both technical aids: no microscope, suction cup: 73.5%, cryo: 82.5%, with microscope, cryo: 90.3%. Their results compare well with those of the experienced surgeons, since they are given straight-forward cases only and they operate under the strictest supervision of an experienced surgeon.