ABSTRACT
Objective To evaluate the macular visual function of patients with myopic choroidal neovascularization (MCNV) before and after intravitreal injection of conbercept.Methods A prospective,uncontrolled and non-randomized study.From April 2017 to April 2018,21 eyes of 21 patients diagnosed as MCNV in Shanxi Eye Hospital and treated with intravitreal injection of conbercept were included in this study.There were 9 males (9 eyes,42.86％) and 12 females (12 eyes,57.14％),with the mean age of 35.1 ± 13.2 years.The mean diopter was-11.30 ± 2.35 D and the mean axial length was 28.93 ± 5.68 mm.All patients were treated with intravitreal injection of conbercept 0.05 ml (1+PRN).Regular follow-up was performed before and after treatment,and BCVA and MAIA micro-field examination were performed at each follow-up.BCVA,macular integrity index (MI),mean sensitivity (MS) and fixation status changes before and after treatment were comparatively analyzed.The fixation status was divided into three types:stable fixation,relatively unstable fixation,and unstable fixation.The paired-sample t-test was used to compare BCVA,MI and MS before and after treatment.The x2 test was used to compare the fixation status before and after treatment.Results During the observation period,the average number of injections was 3.5.The logMAR BCVA of the eyes before treatment and at 1,3,and 6 months after treatment were 0.87±0.32,0.68±0.23,0.52±0.17,and 0.61 ±0.57,respectively;MI were 89.38 ± 21.34,88.87 ± 17.91,70.59 ± 30.02,and 86.76 ± 15.09,respectively;MS were 15.32 ± 7.19,21.35 ± 8.89,23.98 ± 11.12,22.32 ± 9.04 dB,respectively.Compared with before treatment,BCVA (t=15.32,18.65,17.38;P＜0.01) and MS (t=4.08,3.50,4.26;P＜0.01) were significantly increased in the eyes 1,3,and 6 months after treatment.There was no significant difference in the MI of the eyes before treatment and at 1,3,and 6 months after treatment (t=0.60,2.42,2.58;P＞0.05).Before treatment and at 1,3,and 6 months after treatment,the proportion of stable fixation were 28.57％,38.10％,38.10％,33.33％;the proportion of relatively unstable fixation were 47.62％,47.62％,52.38％,57.14％ and the proportion of unstable fixation were 23.81％,14.28％,9.52％,9.52％,respectively.The proportion of stable fixation and relatively unstable fixation at 1,3 and 6 months after treatment were higher than that before treatment,but the difference was not statistically significant (x2=1.82,1.24,1.69;P＞0.05).Conclusion BCVA and MS are significantly increased in patients with MCNV after intravitreal injection of conbercept.
ABSTRACT
Objective To observe the characteristics offundus autofluorescence (FAF) in patients with polypoidal choroidal vasculopathy (PCV) before and after intravitreal ranibizumab injections.Methods A retrospective case series.Seventeen patients (17 eyes) including 11 males and 6 females were enrolled in this study.Best corrected visual acuity (BCVA),FAF and indocyanine green angiography examination were performed on all eyes.The eyes were divided into hypo-autofluorescence group (8 eyes) and mixed autofluorescence group (9 eyes) according to the fluorescence degree.There was no differences of BCVA between two groups (t=2.403,P=0.072).A11 eyes received monthly intravitreal ranibizumab injections for 3 months followed by an as-needed reinjection schedule.All eyes were followed up for 12 months.FAF was performed at the 3rd,6th and 12th month after first treatment.The changes of FAF characteristics and BCVA before and after treatment were observed.Results Before the treatment,the PCV lesions showed two distinct FAF patterns:the confluent hypo-autofluorescence at the polypoidal lesions and the granular hypo-autofluorescence at branching choroidal vascular networks (BVN).During the treatment,the abnormal FAF area of the whole lesions in all eyes reduced and gradually returned to normal.At the 3rd month after treatment,the central hypo-autofluorescence of polyps was surrounded by a hyper-autofluorescence ring,and with time,the ring was weakened or eliminated.However,all the hypo-autofluorescence findings in BVN at baseline were unchanged during the follow-up period.There was no significant differences in BCVA between hypo-autofluorescence group and hyper-autofluorescence group at different follow-up times (t=2.674,2.862,2.250;P=0.058,0.052,0.081).At final follow-up,5 eyes (62.5％) in hypo-autofluorescence group and 3 eyes (33.3％)in hyper-autofluorescence group had increased BCVA,the different was not significant (P=0.347).Conclusions Before the treatment,there were the central hypo-autofluorescence of polyps and circumferential hypo-autofluorescence ring or confluent hypo-autofluorescence.After the treatment,the autofluorescence of polyps increased and then gradually returned to normal.
