Objective To investigate the establishment and application effects of day surgery model for elderly cataract patients aged 80 years and above.Methods One hundred and eighty-two elderly cataract patients operated on by a single doctor between January and July 2021 in the First Affiliated Hospital of USTC,Division of Life Sciences and Medicine,University of Science and Technology of China were analyzed retrospectively,91 patients who were hospitalized in a general eye ward served as a control group,and 91 patients who were hospitalized in a daytime eye ward served as an observation group.The degree of mastery of perioperative related knowledge,postoperative complications,hospitaliza-tion costs,and patient satisfaction were compared between the two groups.Results Patients in the study group were bet-ter than those in the control group in their grasp and satisfaction with the related perioperative knowledge,and the differ-ences were statistically significant(P<0.05).There was no statistical difference between the two groups in terms of the rate of postoperative complications(P>0.05),and there were no non-scheduled re-operations within 24 hours for both groups.Conclusions The day surgery model for elderly cataract patients can effectively reduce the average hospitaliza-tion time,reduce hospital costs,increase satisfaction of both doctors and patients,without the increase of postoperative complications.