Effect of micro - incision on corneal wavefront aberration and tear film in phacoemulsification
10.3980/j.issn.1672-5123.2014.12.27
- VernacularTitle:微切口白内障术后波前像差及泪膜变化研究
- Author:
Zong-Yan, SONG
;
Feng-Hua, CHEN
;
Fang, CHENG
;
Ai-Min, YAN
;
Xu, QIU
;
Xue-Fei, LOU
- Publication Type:Journal Article
- Keywords:
phacoemulsification;
clear corneal incision;
wavefront aberration;
astigmatism;
tear film
- From:
International Eye Science
2014;(12):2207-2209
- CountryChina
- Language:Chinese
-
Abstract:
AlM: To investigate the effect of endocapsular phacoemulsification cataract extraction and intraocular lens (lOL) implantation with a 1. 8mm or 3. 0mm clear corneal incision on total root mean square ( RMS ) value of the cornea, corneal astigmatism, spherical aberration, coma, trefoil and tear film.
METHODS:ln a prospective study, 156 age- related patients ( 196 eyes ) were randomly distributed into two groups. 1. 8mm-group comprised 94 eyes that had a silicone lOL inserted through a 1. 8mm sutureless clear corneal incision, while, 3. 0mm- group comprised 102 eyes through a 3. 0mm clear corneal incision. Postoperatively, the changes in the total RMS value of the cornea, corneal astigmatism, spherical aberration, coma, trefoil and tear film at 1wk, 1 and 3mo were determined respectively.
RESULTS:ln both groups, postoperatively at 1wk,there were statistically significant differences ( P<0. 05 ) in the total RMS value of the cornea, corneal astigmatism, spherical aberration, coma, trefoil and tear film, while, there were statistically minimal differences ( P< 0. 05 ) between 1. 8mm-group and 3. 0mm-group at 1mo, but were not statistically significantly different ( P > 0. 05 ) between two groups at 3mo postoperative.
CONCLUSlON:This study confirms that incision size has strong impact on the corneal higher-order aberrations, especially, 3. 0mm incision caused significant differences in the total RMS value of cornea, corneal astigmatism, spherical aberration, coma, trefoil and tear film compared with 1. 8mm micro-incision, therefore, micro-incision is very beneficial for clinical use in phacoemulsification.
