[关键词]
[摘要]
目的：比较多焦点 IOL植入联合角膜切口矫正散光与单焦点IOL植入术治疗白内障合并低度散光患者的视觉质量差异。
方法：选取老年性白内障合并低度散光患者80例100眼，按随机原则分为对照组及干预组，各40例50眼。干预组行最陡角膜散光轴向上做一对透明角膜松解切口，同时按常规行透明角膜切口白内障超声乳化+多焦点 IOL植入术； 而对照组仅行透明角膜切口白内障超声乳化+单焦点 IOL植入术。分别于术后1d； 1wk； 1，3mo观察两组术眼的角膜散光情况及裸眼远视力(uncorrected distance visual acuity，UCDVA)，裸眼近视力(uncorrected near visual acuity，UCNVA)； 3mo时最佳矫正远视力(best corrected distance visual acuity， BCDVA)、最佳矫正近视力(best corrected near visual acuity， BCNVA)及最佳矫正远视力下最佳矫正近视力(distant corrected near visual acuity， DCNVA)并进行统计分析。
结果：术后UCDVA 和UCNVA干预组均高于对照组，而各时期角膜散光干预组均低于对照组。两组患者术后3d均有明显改善。术后1wk； 1，3mo， UCDVA和UCNVA及3mo时BCDVA， BCNVA无显著差异。
结论：多焦点 IOL植入联合透明角膜松解切口可有效矫正白内障术前散光，提高全程视力，从而扩大多焦点 IOL适用人群。
[Key word]
[Abstract]
AIM: To compare the postoperative vision performance of multifocal intraocular lens implantation combined with corneal incision to correct astigmatism and that of monofocal intraocular lenses implantation.
METHODS: Eighty patients(100 eyes)with age-related cataract and low cornea astigmatism were divided into control group and intervention group. Intervention group received limbal relaxing incisions at the steepest meridian axis during phacoemulsification with temporal corneal incision and implanting multifocal intraocular; the control group only received phacoemulsifieation with temporal corneal incision and implanting monofocal intraocular lenses. Uncorrected distance visual acuity(UCDVA), uncorrected near visual acuity(UCNVA)and cornea astigmatism were observed 1 week, 1 month and 3 months postoperatively. Best corrected near visual acuity(BCNVA), best corrected distance visual acuity(BCDVA), distant corrected near visual acuity(DCNVA), were observed 3 months postoperatively.
RESULTS: UCDVA and UCNVA in intervention group were higher than that in control group 1 week, 1 month and 3 months postoperatively while the cornea astigmatism in intervention group was lower than that in control group. BCNVA, BCDVA and DCNVA in both groups showed obvious improvement 3d after the surgery. There was no significant difference between the two groups in UCDVA and UCNVA 1 week, 1 month and 3 months postoperatively and in BCDVA and BCNVA 3 months postoperatively.
CONCLUSION:Multifocal intraocular lens implantation combined with transparency cornea relaxing incisions can effectively rectify preoperative cornea astigmatism in cataract patients, and it can provide good visual acuity of entire range, thus to extend the target users of multifocal intraocular lens.
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