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Mi Hyun Cheon, Jooeun Lee, Jae Yong Kim, Myoung Joon Kim, Michael Scott Kook, Hungwon Tchah; Homeostatic Response Of Intraocular Pressure In The Early Period After Small Incision Phacoemulsification. Invest. Ophthalmol. Vis. Sci. 2011;52(14):6688.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the homeostatic response of postoperative intraocular pressure (IOP) by analyzing postoperative IOP trends after small incision phacoemulsification.
This prospective analysis included 316 normotensive eyes treated with small incision phacoemulsification including posterior chamber IOL in-the-bag implantation. IOP was measured immediately after surgery and 2 hours, 4 hours, 1 day, 1 week, and 1 month postoperatively.
Patients were divided into three groups on the basis of immediate postoperative IOP. Group I had IOP <10 mmHg (N=88, 27.8%), Group 2 had IOP 10-21 mmHg (N=130, 41.1%), and Group 3 had IOP >21 mmHg (N=98, 31.0%). The mean IOPs of the three groups were 6.4±2.0 mmHg, 14.5±3.2 mmHg, and 27.0±4.6 mmHg, respectively immediately after surgery and significantly different (ANOVA, P<0.05). However, the IOP values were nearly normalized in three groups 2 to 4 hours after operation . Twenty-eight eyes (8.9%) had an IOP lower than 5 mmHg immediately after surgery in the absence of incision leakage. There were no postoperative complications related to hypotony. Thirty-one (9.8%) eyes had an IOP of at least 30 mmHg immediately after surgery. However, their IOP values had normalized 1 day after surgery.
n normal eyes that underwent uneventful phacoemulsification with posterior chamber IOL in-the-bag implantation, immediate postoperative high or low IOP did not affect re-equilibration to baseline.
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