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Differences between the pre- and postoperative BCVA at 24 months after treatment (improvement in the visual acuity) in the IVR and PDT groups. Change in BCVA at 24 months are shown as mean change±s.d. (median, IQR). The IVR group showed a greater degree of improvement in visual acuity at the 12-, 18- and 24-month follow-up examinations (P=0.041, P=0.029 and P=0.018, respectively).
