Results Thirteen cases (14 eyes) did not have PSI due to surgical contraindication or impossible to tolerate the operation or impossible to obtain an improvement of visual acuity after operation.

• 结果13例(14只眼)老年心血管疾病患者因术前评估发现手术禁忌证、无法耐受手术或手术后视力无法提高而放弃手术;