Abstract
A microcomputer system that serves as an accessory part of the multiple exposure photography technique for determination of sperm motility is described. With this system, the percentage of motile spermatozoa, the average velocity, the velocity frequency distribution and sperm concentration can be computed easily from 200-400 images of photographed spermatozoa and within 5-8 min. In this way the multiple exposure photography technique can be used widely in those centers that are interested in an objective and accurate method for sperm motility determination in routine semen analysis and for research purposes.