Document Detail

Corneal biomechanical properties and intraocular pressure changes after phacoemulsification and intraocular lens implantation.
MedLine Citation:
PMID:  19027566     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate corneal viscoelastic and intraocular pressure (IOP) changes measured by an ocular response analyzer (ORA) after phacoemulsification and intraocular lens (IOL) implantation. SETTING: Yeditepe University Department of Ophthalmology, Istanbul, Turkey. METHODS: Fifty-one eyes scheduled for cataract surgery were included in the study. Corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated intraocular pressure (IOPcc), and Goldmann-correlated IOP (IOPg) were measured by ORA preoperatively and 1 week and 1 and 3 months postoperatively. Central corneal thickness (CCT) was measured using the ORA's integrated handheld ultrasonic pachymeter. RESULTS: The mean preoperative CCT (537 microm+/-46 [SD]) did not change significantly by the end of 1 month postoperatively. The mean preoperative IOPcc (17.2+/-3.0 mm Hg) decreased significantly by 3 months postoperatively (15.2+/-3.7 mm Hg) (P= .018). The mean CH decreased from 10.36+/-1.48 mm Hg preoperatively to 9.64+/-1.26 mm Hg at 1 week (P= .028); it increased to preoperative values at the end of 1 month (10.20+/-1.70) and 3 months (10.74+/-1.54) (P>.05). The mean CRF decreased from 10.94+/-2.54 mm Hg preoperatively to 9.99+/-1.77 at 1 week (P= .026); it increased to preoperative values at 1 month (10.26+/-1.59) and 3 months (10.35+/-1.46) (P>.05). CONCLUSIONS: Although CH and the CRF decreased in the early postoperative period, the parameters increased and reached preoperative values by 3 months postoperatively, showing that corneal biomechanical properties are influenced by phacoemulsification and IOL implantation.
Raciha Beril Kucumen; Nursal Melda Yenerel; Ebru Gorgun; Destan Nil Kulacoglu; Banu Oncel; Maryo Cenk Kohen; Murat Levent Alimgil
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cataract and refractive surgery     Volume:  34     ISSN:  0886-3350     ISO Abbreviation:  J Cataract Refract Surg     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-25     Completed Date:  2009-02-02     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  8604171     Medline TA:  J Cataract Refract Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2096-8     Citation Subset:  IM    
Department of Ophthalmology, Yeditepe University Eye Hospital, Istanbul, Turkey.
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MeSH Terms
Biomechanics / physiology
Cornea / physiology*
Elasticity / physiology*
Follow-Up Studies
Intraocular Pressure / physiology*
Lens Implantation, Intraocular*
Postoperative Period
Prospective Studies
Tonometry, Ocular
Comment In:
J Cataract Refract Surg. 2009 Nov;35(11):2033-4; author reply 2034-5   [PMID:  19878850 ]

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