AIM: To observe the diopter after cataract surgery for vision gain in high myopia and its effect on visual outcomes.

METHODS: Sixty(120 eyes)high myopia combined with cataract cases received phacoemulsification and intraocular lens implantation in our hospital were retrospective studied. The patients were divided into three groups based on postoperative diopter: -1.0～-2.0D(group A), -2.25～-3.0D(group B)and -3.25～-4.0D(group C). The uncorrected distance visual acuity(UCDVA), best corrected distant visual acuity(BCDVA), uncorrected near visual acuity(UCNVA)and questionnaire of Activities of Daily Vision Scale(ADVS)were collected to assess the vision gain at 3mo after cataract surgery.

RESULTS: At 3mo after surgery, UCDVA of group A was better than that of group B, and UCDVA of group B was better than that of group C. There were no differences in BCDVA among groups. There were significant differences between the three groups' UCNVA, it was best for the group C, followed by the group B, group A was the worst. For questionnaire, no difference was observed in patients' satisfactory for surgical results, but a significant difference was detected in postoperative glasses wearing frequency between groups.

CONCLUSION:For cataract surgery in high myopia combined cataract, postoperative diopter should be calculated based on patients' daily requirements. For patients had not used to wearing glasses and near distant working condition, it's appropriated to reserve a minor degree of myopia. Conversely, for patients require near distant working and received wearing moderate and low hyperopia mirror, higher degree of myopia can be reserved.