·AIM:To determine the characteristic of intraocular pressure(IOP)distribution in retired people and its relation with age and gender.·METHODS:The 4356 retired people aged 50 or over were clustered sample.One eye of each subject was selected for data analysis,and then the IOP was measured by a non-contact tonometer.Whether the age and gender of the retired people had impact on the IOP was analyzed.·RESULTS:Valid data were obtained in 4297 people,the mean IOP was 16.33±4.44mmHg.IOP of aged≥70 was significantly lower than that of aged<70,P<0.05.There was no significant difference between male and female,P>0.05.·CONCLUSION:IOP is influenced by age rather than gender.IOP distribution is a Gaussian-like curve,with the mean value 16.33±4.44mmHg.·