Table 2. Computer-assisted semen analysis (CASA) program setting

Parameter Setting
Field-of-view depth=Depth of sample chamber 20 µm
Light adjustment 90–105
Total number of cells evaluated or number of fields 1,500 spermatozoa or 14 fields
Sperm recognition area 15–75 µm2
Frame rate 25 frames/sec
Points assessed for sperm motility 11, VAP points 5
Total motility Progressive motility + local motility
Local motility DSL (distance: straight) < 6.0 µm
Progressive motility > 75% of STR (straightness)