RESUMO
The aim of this study was to determine the sperm morphology of proven fertile males and to compare the same with that of infertile males. This study was carried out at International Medical College Rawalpindi and its attached Railway hospital and Islamabad Clinic Serving Infertile Couples Islamabad, from June 2005 to July 2006. 50 healthy fertile males were selected and their semen morphology was determined according to Tygerberg's strict criteria, while another 50 infertile males were recruited as controls Proven fertile group showed significantly higher morphologically normal forms of sperms [3.04 +/- 1.63] than the infertile group. Sperm morphology assessed by strict criteria is of value in the in-vivo situation to identify a group with greater chance of having an infertility problem and strict criteria sperm morphology analysis should be used to minimize variations in intra and inter-individual and inter-laboratory sperm morphology assessment