The changes of retina thickness in fovea area and the coreected visual acuity were relative to abnormal changes in macula examined by OCT,but FFA only revealed abnormality 26.3% ( normal 22eyes of 14 patients).

• 而FFA检查未发现异常改变者为 14例 2 2只眼 ；异常率仅为 2 6 .；3%25。