有些人介绍，手术后视力立即完全恢复。
目的探讨显微小梁切除术后视力减退的原因。
To investigate the cause of deterioration of vision after trabeculectomy.
CRVO组病史较长，手术后视力改善较少。
CRVO group had longer history and less visual improvement after surgery.
手术后，他恢复了视力。
结果术后患者的视力均达到预期效果；
Results The visual acuity was just as expected before operation;
结果术后患者的视力均达到预期效果；
Results The visual acuity was just as expected before operation;
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