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Changes of corneal biomechanical properties after cataract surgeries of different wound length

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Session Details

Session Title: Corneal Biomechanics

Session Date/Time: Monday 09/10/2017 | 08:00-10:30

Paper Time: 09:14

Venue: Room 2.1

First Author: : J.Wang TAIWAN

Co Author(s): :                        

Abstract Details

Purpose:

To investigate changes of corneal biomechanical properties after uneventful cataract extraction surgeries and implantation of intraocular lens in the bag in different corneal wound length.

Setting:

A prospective, non-randomized, comparative study in Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City, Taiwan

Methods:

From January 2011 to January 2013, we used ocular response analyzer to measure corneal biomechanical properties including corneal hysteresis (CH), corneal resistance factor (CRF), goldmann-correlated intraocular pressure (IOPg), and corneal-compensated intraocular pressure (IOPcc) in patients undergoing cataract surgeries. Group 1 composed of patients receiving phacoemulsification with 2.2-mm long corneal wound, Group 2 for ones with phacoemulsification in 2.75-mm corneal wound, and Group 3 for those undergoing extracapsular cataract extractions in 11-mm limbal wound. CH, CRF, IOPg, and IOPcc before and 1 day, 1 week, 1 month, and 3 months after operations were recorded and compared with Wilcoxon signed rank test.

Results:

CH 1 day after the operation was significantly lower than baseline (p < 0.05), but 1-week, 1-month, 3-month postoperative CH were comparable with the baseline value (p > 0.05) in Group 1 (n = 100). CH 1 day and 1 week after the operation were significantly lower than baseline (p < 0.05), but 1-month and 3-month postoperative CH not (p > 0.05) in Group 2 (n = 100). CH 1 day, 1 week, and 1-month after the operation were significantly lower than baseline (p < 0.05), but 3-month postoperative CH not (p > 0.05) in Group 3 (n = 30).

Conclusions:

CH decreased temporarily after cataract surgeries. Cataract surgeries with longer wound length required longer time for CH recovery. CRF decreased significantly from 1 day to 3 months after the surgeries comparing to preoperative data in all groups. IOP may reduce as long as 3 months after cataract surgeries of different wound length.

Financial Disclosure:

NONE

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