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Intraocular pressure changes following phacoemulsification

Poster Details

First Author: M.Batur TURKEY

Co Author(s):    C. Caglar   H. Demir   E. Eser   T. Yasar   M. Durmus  

Abstract Details



Purpose:

To analyze the changes of intraocular pressure (IOP) after cataract surgery.

Setting:

Hitit University, Faculty of Medicine, Department of Ophthalmology, Corum. Yuzuncu Yil University, Faculty of Medicine, Department of Ophthalmology, Van. Canakkale State Hospital, Ophthalmology Clinic, Canakkale.

Methods:

This was a prospective, randomized, case series study of 62 consecutive eyes undergoing uncomplicated cataract surgery. All the subjects had undergone cataract surgery with phacoemulsification and IOL implantation between May 2013 and September 2013 in two different eye clinics. Four different surgeons performed the phacoemulsification using a similar surgical technique with different viscoelastics. IOP was measured by same non-contact tonometer at baseline before cataract surgery and on follow-up visits 1 day, 1,2 and 4 weeks afterward. The patients were not taken any antiglaucomatous treatment after cataract surgery. IOP measurements were analyzed by analysis of variance (ANOVA) for repeated measure.. The data were analyzed using the Statistical Procedures for the Social Sciences (SPSS for Windows software, version 15.0).

Results:

The study was composed of 62 eyes of 62 patients with a mean age of 66±12.38 (range, 40 to 84 years). There were 38 females and 28 males. The number of right and left eyes were 41 and 25 respectively. The mean pachymetry was 535,69 ± 35,75 µm (463-638) before cataract surgery. The pre-operative mean IOP was 14.63±3.09 (10-23) mmHg at baseline visit. IOP was 19,95±8,65 (9-58) at the third hours, 14.50±3.96 (8-29) at the first day, 12.83±2.55 (8-19) at the fist week, 12.91±2.51 (7-18) at the second week, 12.72±2.53 (8-18) at the last postoperative visit. The mean preoperative IOP was 14.63 mmHg, which statistical significant increased to 19,95 mmHg (26.6%) on the 3rd hours (p<0,001). The IOP decreased significantly to 14.5 mmHg at 1st day. The difference in IOP between pre-operative and post-operative first day visit was no significantly different. The decrease in mean IOP between the postoperative first day and the first week was 1.67. This difference was statistical different (p<0.05). Seven of eyes in this study had a considerable elevation (>30 mmHg) in the pressure after the surgery. IOP was returned to normal values without antiglaucomatous medication in these eyes.

Conclusions:

-Previous studies have shown that many factors such as surgical technique, intraoperative complication, post-operative medications, and type of viscoelastic can contribute to short-term IOP fluctuations following surgery although the duration of post-operative medications can affect the change in IOP. Exremely high IOPs (>30 mmHg) were seen at same surgeon. We think that type of viscoelastic and surgery technique affect the IOP changes after cataract surgery. -We did not use any antiglaucomatous medication in postoperative follow-up. We have no encountered any complications related to high IOP. -There was no statistical different changes in IOP after the second postsurgical week. -There was a decline of 1.91 mm Hg in IOP at 1 month post-operative follow-up when the mean IOP was 12.72±2.53 (8-18) mm Hg. This decline of between baseline and last visit was statistically significant (p<0.05). In short term, uneventful phacoemulsification and intraocular lens implantation results in a decrease in IOP. FINANCIAL INTEREST: NONE

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