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AIM: To compared the therapeutic effect of improved macular hole surgery to traditional macular hole surgery for idiopathic macular hole(IMH). METHODS: From April 2014 to June 2017, 28 eyes of 28 IMH patients who were treated in our hospital were selected consecutively and received surgical treatment independently performed by the same physician in our hospital. The patients were divided into A(traditional group)and B(improvement group)groups. All 13 cases in Group A were treated with traditional vitrectomy internal limiting membrane peeling and C3F8 tamponade, while all 15 cases in Group B were treated with improved indocyanine green-assisted internal limiting membrane peeling combined with macular hole reconstruction and air tamponade. All patients were reviewed at 1wk, 1, 3, and 6mo after surgery. The best corrected visual acuity(BCVA)before and after the operation, operation time, closure rate of the macular hole during the last review and prone time were compared between the two groups of patients. RESULTS: There was no significant difference in closure rate between the two groups(P>0.05). Postoperative BCVA increased in both groups compared with preoperatively and the differences were statistically significant(PP>0.05). The operation time in Group B was significantly shorter than that in Group A(PPCONCLUSION: This study shows that compared with the traditional group, the improved indocyanine green-assisted peeling of internal limiting membrane combined with macular hole reconstruction and air tamponade can achieve similarly high closure rates while the operation procedure was simplified and the operation time was shortened. Reduced number of instruments into and out of the incision can reduce the incidence of complications. The postoperative patient's prone time is significantly shortened, with high comfort and good compliance.

AIM:To measure the thickness of the normal levator palpebrae muscle by using ultrasound biomicroscopy(UBM)and to provide clinical guidance for the surgical treatment of blephamptosis. METHODS:Seventy-five cases(150 eyes)with normal levator palpebrae muscle were collected in our hospital. The normal levator palpebrae muscle was categorized into youth group(aged 20～39), middle-aged group(aged 40～59)and older group(aged >60), 25 cases with 50 eyes in every group. The number of male was 30(60 eyes)and the number of female was 45(90 eyes).UBM was applied to measure the thickness of levator palpebrae muscle of each eye. The results were analyzed statistically and to see if the thickness might be effected by age or gender.RESULTS:The mean thickness of levator palpebrae muscle in youth group, middle-aged group and older group were 0.833±0.054, 0.723±0.021 and 0.644±0.037mm respectively. The mean thickness was 0.748±0.100mm in females and 0.734±0.078mm in males. By one-way ANOVA, the thicknesses of levator palpebrae muscle among the three different groups were different, and the differences were statistically significant(PCONCLUSION:UBM is a covenient,non-invasive test which can be used to measure the thickness of the levator palpebrae muscle. The levator palpebrae muscle becomes thinner gradually as aging, even without senile blepharoptosis, and the gender has nothing to do with the thicknesses of levator palpebrae muscle.