2.2 mm与2.75 mm切口超声乳化术后角膜散光变化的对比

doi:10.3760/cma.j.issn.1674-845X.2014.08.005

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (473 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract

Objective To study and compare the effects of a 2.2 mm or 2.75 mm coaxial clear corneal incision （CCI） phacoemulsification on changes in corneal astigmatism. Methods A prospective， randomized and controlled clinical study was conducted on 167 eyes of 134 cataract patients who were randomly divided into 2 groups： a 2.2 mm group （70 eyes of 57 patients） and a 2.75 mm group （97 eyes of 77 patients）. A superior incision was made when preoperative corneal astigmatism was <0.50 D， while an incision was made at the highest refractive power meridian when corneal astigmatism was ≥0.50 D. Uncorrected visual acuity （UCVA）， best corrected visual acuity （BCVA）， corneal astigmatism （CAD）， and corneal astigmatism axis （CAA）， were measured in both groups before the surgery and 1 week， 1 month and 3 months after surgery. A comparison and analysis between and within groups were performed on the above indicators at each time. Data were analyzed using an analysis of variance of the repeated measurement data， an independent samples t test， a group design Wilcoxon rank sum test， and an independent sample R×C contingency table χ² test. Results Postoperative CAD decreased significantly in both groups， 0.73±0.43 D （preoperatively） changed to 0.49±0.36 D（3 months postoperatively）（P＜0.01） in the 2.2 mm group； 0.87±0.57 D （preoperatively） decreased to 0.53±0.38 D （3 months postoperatively）（P＜0.01） in the 2.75 mm group. The CAD of the 2.2 mm group briefly increased 1 week postoperatively （P＜0.05）， then decreased to preoperative levels （P＞0.05）. There was no significant change in the CAD of the 2.75 mm group 1 week postoperatively （P＞0.05）， then there was a significant reduction 1 month postoperatively （P＜0.05）. There was no significant difference in the changes in CAD amplitude between the groups. The overall distribution of CAA within groups showed no significant difference before and after surgery， and no significant difference between groups. Conclusion By making CCI at the highest refractive power meridian， both the 2.2 mm and 2.75 mm CCI could partially correct the

Key words： Phacoemulsification Microincision Visiual acuity Corneal astigmatism

Corresponding Authors: Lan Changjun，Email：lanchangjun@sina.com

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Tan Qingqing
	Liao Xuan
	Dong Xingtang
	Lan Changjun

Cite this article:

Tan Qingqing,Liao Xuan,Dong Xingtang等. Comparative study of changes in postoperative corneal astigmatism with a clear corneal incision phacoemulsification of 2.2 mm or 2.75 mm[J]. Chinese Journal of Optometry Ophthalmology and Visual science, 2014, 16(8): 465-469.

URL:

https://www.cjoovs.com/EN/10.3760/cma.j.issn.1674-845X.2014.08.005 OR https://www.cjoovs.com/EN/Y2014/V16/I8/465

[1]	Khokhar S， Lohiya P， Murugiesan V， et al. Corneal astigmatism correction with opposite clear corneal incisions or single clear corneal incision： comparative analysis[J]. J Cataract Refract Surg，2006，32：1432-1437.
[2]	Emery JM， Little JH. Phacoemulsification and aspiration of cataracts[M]. London： Mosby，1979，23：46-47.
[3]	Olson RJ， Crandall AS. Prospective randomized comparison of phacoemulsification cataract surgery with a 3.2-mm vs a 5.5-mm sutureless incision[J]. Am J Ophthalmol，1998，125：612-620.
[4]	Elkady B， Alió JL， Ortiz D， et al. Corneal aberrations after micro-incision cataract surgery[J]. J Cataract Refract Surg，2008， 34：40-45.
[5]	Lever J， Dahan E. Opposite clear corneal incisions to correct pre-existing astigmatism in cataract surgery[J]. J Cataract Refract Surg，2000，26：803-805.
[6]	刘明，宁宏，时景璞，等. 老年性白内障超声乳化吸除术后早期视力低下的影响因素[J]. 国际眼科杂志，2010，10：859-861.
[7]	李艳，李筱荣，提拉宏，等. 白内障两种不同长度透明角膜切口对比[J]. 眼外伤职业眼病杂志，2005，27：650-652.
[8]	姚克，汤霞靖，黄晓丹，等. 双手微切口超声乳化白内障吸除联合人工晶状体植入术的临床效果评价[J]. 中华眼科杂志，2008， 44：525-528.
[9]	Tejedor J， Pérez-Rodríguez JA. Astigmatic change induced by 2.8-mm corneal incisions for cataract surgery[J]. Invest Ophthalmol Vis Sci，2009，50：989-994.
[10]	Qammar A， Mullaney P. Paired opposite clear corneal incisions to correct preexisting astigmatism in cataract patients[J]. J Cataract Refract Surg，2005，31：1167-1170.
[11]	Alió JL， Elkady B， Ortiz D. Corneal optical quality following sub 1.8 mm micro-incision cataract surgery vs 2.2 mm mini-incision coaxial phacoemulsification[J]. Middle East Afr J Ophthalmol，2010，17：94-99.
[12]	Capella MJ， Barraquer E. Estudio comparativo entre cirugía de catarata por microincisión coaxialy facoemulsificación estándar [J]. Arch Soc Esp Oftalmol，2010，85：268-273.
[13]	周用谋，常平骏，王丹丹，等. 两种不同长度角膜缘切口对白内障超声乳化术后角膜前后表面散光影响的对比[J]. 中华实验眼科杂志，2012，30：543-547.
[14]	Ozyol E， Ozyol P. Analyses of surgically induced astigmatism and axis deviation in microcoaxial phacoemulsification[J]. Int Ophthalmol，2014，34：591-596.
[15]	姚克，王玮，吴炜，等. 同轴1.8 mm微切口超声乳化白内障手术临床效果评价[J]. 中华眼科杂志，2011，47：903-907.
[16]	Wilczynski M， Supady E， Piotr L，et al. Comparison of surgically induced astigmatism after coaxial phacoemulsification through 1.8 mm microincision and bimanual phacoemulsification through 1.7 mm microincision[J]. J Cataract Refract Surg，2009，35：1563-1569.
[17]	Gon?觭alves FP， Rodrigues AC. Phacoemulsification using clear cornea incision in steepest meridian[J]. Arq Bras Oftalmol，2007，70：225-228.
[18]	Reddy B， Raj A， Singh VP. Site of incision and corneal astigmatism in conventional SICS versus phacoemulsification[J]. Ann Ophthalmol （Skokie），2007，39：209-216.
[19]	Moon SC， Mohamed T， Fine IH. Comparison of surgically induced astigmatisms after clear corneal incisions of different sizes[J]. Korean J Ophthalmol，2007，21：1-5.