Nepal J Ophthalmol. 2020 Jan;12(23):66-74. doi: 10.3126/nepjoph.v12i1.24906.
This study was conducted to determine whether the World Health Organization (WHO) visual acuity standards are correlated between the early and late early post-operative periods following phacoemulsification (phaco) and small incision extracapsular cataract surgery (SICS). Secondary aims were to compare visual outcomes and complications following SICS and phaco.
Retrospective cohort study following phaco and SICS performed by one surgeon. Primary outcome measures included uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) at the early (≤72 hours) and late (≥21 days) post-operative visits. Secondary outcome measures included complications and astigmatism.
705 eyes were studied (509 phaco, 196 SICS). The correlation for UCVA between early and late follow-up examinations was higher for phaco (rs=0.58) compared to SICS (rs=0.45, p=0.04) while correlation for BCVA was similar (phaco,rs=0.52; SICS, rs=0.47; p=0.44). At the early post-operative visit, a higher proportion in the phaco group achieved ≥6/18 UCVA (81.5% phaco vs 64.8% SICS, p<0.0001) and BCVA (87.8% phaco vs 73.5% SICS, p<0.0001). At the late post-operative visit, a higher proportion following phaco also achieved ≥6/18 UCVA (93.9% phaco vs 85.2% SICS, p=0.0004) and BCVA (96.9% phaco vs 91.3% SICS, p=0.004). After exclusion of eyes with pre-existing ocular comorbidities, a similar proportion had ≥6/18 late UCVA (98.9% phaco vs 96.9% SICS, p=0.22) and BCVA (100% phaco vs 99.2% SICS, p=0.27).
Early and late post-operative WHO visual acuity levels are correlated, but not equivalent, following both phaco and SICS. In eyes without comorbidities, similar final visual outcomes can be achieved after phaco and SICS.
本研究旨在确定世界卫生组织（WHO）视力标准在白内障超声乳化术（phaco）和小切口囊外白内障摘除术（SICS）后的早期和晚期早期术后期间是否相关。次要目的是比较 SICS 和 phaco 术后的视力结果和并发症。
对一位外科医生进行的 phaco 和 SICS 的回顾性队列研究。主要观察指标包括早期（≤72 小时）和晚期（≥21 天）随访时的未矫正视力（UCVA）和最佳矫正视力（BCVA）。次要观察指标包括并发症和散光。
共研究了 705 只眼（509 只 phaco，196 只 SICS）。phaco 的早期和晚期随访检查之间的 UCVA 相关性高于 SICS（rs=0.58 与 rs=0.45，p=0.04），而 BCVA 的相关性相似（phaco，rs=0.52；SICS，rs=0.47；p=0.44）。在早期术后访视时，phaco 组中达到≥6/18 UCVA 的比例更高（81.5% phaco 与 64.8% SICS，p<0.0001）和 BCVA（87.8% phaco 与 73.5% SICS，p<0.0001）。在晚期术后访视时，phaco 组中达到≥6/18 UCVA 的比例也更高（93.9% phaco 与 85.2% SICS，p=0.0004）和 BCVA（96.9% phaco 与 91.3% SICS，p=0.004）。排除有预先存在的眼部合并症的眼睛后，晚期 UCVA 达到≥6/18 的比例相似（98.9% phaco 与 96.9% SICS，p=0.22）和 BCVA（100% phaco 与 99.2% SICS，p=0.27）。
在 phaco 和 SICS 术后，早期和晚期术后 WHO 视力水平相关，但不等同。在没有合并症的眼睛中，phaco 和 SICS 后可以获得相似的最终视力结果。
