Graft biomechanical properties after penetrating keratoplasty in keratoconus

Cornea
Sepehr FeiziAli Hashemloo

Abstract

To measure corneal graft biomechanical properties after penetrating keratoplasty (PKP) in a group of keratoconic eyes using the ocular response analyzer (ORA) and to evaluate the relationship between donor size, donor-recipient disparity and central graft thickness (CGT), and ORA parameters. This cross-sectional study was conducted on 34 eyes of 34 keratoconus patients who had undergone PKP. Corneal hysteresis (CH), corneal resistance factor (CRF), and cornea-compensated intraocular pressure were measured at least 6 months after complete suture removal. Two groups of donor-recipient disparity (0.25 vs. 0.50 mm) were compared using the independent t test. Multivariate regression analysis was used to investigate the correlation of donor trephine size and CGT with ORA parameters. Factors influencing intraocular pressure measured with the Goldmann applanation tonometer (IOP GAT) after PKP were determined using multiple regression analysis. Mean patient age and follow-up period were 29.6 ± 6.2 years and 82.4 ± 59.6 months, respectively. Mean CGT, CH, and CRF were 564.7 ± 36.9 μm, 10.1 ± 2.1 mm Hg, and 10.0 ± 2.3 mm Hg, respectively. CH and CRF had a significant positive correlation with donor trephine size and CGT. Significantly gre...Continue Reading

References

Jul 9, 1999·Eye·K H MokV W Lee
Aug 13, 2003·Archives of Ophthalmology·Marianne O PriceFrancis W Price
Feb 24, 2004·The British Journal of Ophthalmology·L LimD J Coster
Apr 21, 2004·Cornea·Shigeto ShimmuraKazuo Tsubota
Feb 22, 2005·Journal of Cataract and Refractive Surgery·David A Luce
Oct 18, 2005·Cornea·Mohammad Ali JavadiShahin Yazdani
Aug 10, 2006·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·An ViestenzAr Viestenz
Nov 7, 2006·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Sunil ShahSanjay Mantry
Jun 27, 2007·Investigative Ophthalmology & Visual Science·Sunil ShahIan Cunliffe
Jul 31, 2007·Journal of Cataract and Refractive Surgery·Dolores OrtizJorge L Alió
Jul 17, 2008·Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde·Caitriona KirwanMichael O'Keefe
Jul 22, 2008·Vision Research·Meixiao ShenFan Lu
Mar 4, 2009·Investigative Ophthalmology & Visual Science·María A del BueyElena Lanchares
Feb 2, 2010·Cornea·Heather M Skeens, Edward J Holland
Jun 10, 2010·Korean Journal of Ophthalmology : KJO·Joo Young ShinWon Ryang Wee

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Citations

Oct 23, 2013·Indian Journal of Ophthalmology·Vanathi MurugesanPanda Anita
May 27, 2014·Journal of Cataract and Refractive Surgery·David P Piñero, Natividad Alcón
Apr 15, 2014·ISRN Ophthalmology·Nery Garcia-PortaJose Manuel González-Méijome
Aug 28, 2015·The British Journal of Ophthalmology·Sepehr FeiziSeyed-Hashem Daryabari
Nov 8, 2020·Journal français d'ophtalmologie·A C Kouassi ReboursR P Agbohoun

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