Evaluation of corneal biomechanical properties following penetrating keratoplasty using ocular response analyzer
| Autor: | Vanathi Murugesan, Ravi Bypareddy, Mahesh Kumar, Dada Tanuj, Panda Anita |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Mean deviation
non-proliferative diabetic retinopathy short fluctuations short wave automated perimetry standard automated perimetry Antimicrobial effect conventional silicone oil endophthalmitis agents heavy silicone oil Keratoconus modified deep anterior lamellar keratoplasty steep corneal curvature Bevacizumab branch retinal vein occlusion intravitreal macular edema triamcinolone Blindness disability evaluation quality of life visual acuity Mitomycin C pterygium recurrence pterygium surgery subconjunctival bevacizumab injection Imaging in glaucoma optical coherence tomography pediatric retinal nerve fiber layer Autogenous tissue grafting lacrimal drainage system lacrimal fossa bypass surgery Cornea excimer laser growth factors myopia photorefractive keratectomy Triamcinolone acetonide human trabecular meshwork cells in vitro Hyperopic implantable collamer lens myopic implantable collamer lens optical quality wavefront aberrations Dacryocystorhinostomy nasolacrimal duct obstruction silicone tube Age anterior chamber depth body height primary angle closure glaucoma sex Children eye injury vitrectomy study eye injury trauma vitrectomy Corneal biomechanics corneal hysteresis corneal resistance factor intraocular pressure keratoplasty ocular response analyser Ophthalmology RE1-994 |
| Zdroj: | Indian Journal of Ophthalmology, Vol 62, Iss 4, Pp 454-460 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0301-4738 1998-3689 |
| DOI: | 10.4103/0301-4738.119317 |
| Popis: | Purpose: To evaluate corneal biomechanical properties in eyes that has undergone penetrating keratoplasty (PK). Materials and Methods: Retrospective observational study in a tertiary care centre. Data recorded included ocular response analyzer (ORA) values of normal and post-keratoplasty eyes [corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann-correlated intraocular pressure (IOPg), and cornea-compensated intraocular pressure (IOPcc)], corneal topography, and central corneal thickness (CCT). Wilcoxon signed rank test was used to analyze the difference in ORA parameter between post-PK eyes and normal eyes. Correlation between parameters was evaluated with Spearman′s rho correlation. Results: The ORA study of 100 eyes of 50 normal subjects and 54 post-keratoplasty eyes of 51 patients showed CH of 8.340 ± 1.85 and 9.923 ± 1.558, CRF of 8.846 ± 2.39 and 9.577 ± 1.631 in post-PK eyes and normal eyes, respectively. CH and CRF did not correlate with post-keratoplasty astigmatism (P = 0.311 and 0.276, respectively) while a significant correlation was observed with IOPg (P = 0.004) and IOPcc (P < 0.001). Conclusion: Biomechanical profiles were significantly decreased in post-keratoplasty eyes with significant correlation with higher IOP as compared with that in normal eyes. |
| Databáze: | Directory of Open Access Journals |
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