AIM: To evaluate preoperative and postoperative the characteristics of microperimetry in patients who underwent macular surgery for idiopathic macular hole(IMH).

METHODS: Fifty eyes of 50 patients with IMH were included in the study. Patients underwent pars plana vitrectomy and peeling of the internal limiting membrane(ILM). ILM visualization was improved by using triamcinolone acetonide(TA group)or indocyanine green dye(ICG group). Macular hole closure and retinal function was assessed preoperatively and postoperatively over a period of 6mo by spectral-domain optical coherence tomography examination, best corrected visual acuity(BCVA)and MP-1 microperimetry.

RESULTS: Macular hole closure was achieved in 76%, Hole was not closed but calm in 16%, 8% was not closed in TA group and those in ICG group were 72%, 16% and 12% respectively, detected by optical coherence tomography(OCT). At 6mo, visual acuity improved in both groups(P<0.05), and there were no statistically significant differences of BCVA between groups. Mean macular sensitivity within the central 20° increased in both groups, and TA group's mean macular sensitivity was better than ICG group's.

CONCLUSION: Vitrectomy and ILM peeling assisted with either TA or infracyanine green staining improves visual acuity and mean macular sensitivity at 6mo in patients affected by IMH. Macular microperimetry could be used to evaluation visual function changes of macular after surgery.