Changes in corneal biomechanics following different keratoplasty techniques

Hosny, Mohamed; Hassaballa, Mohamed A; Shalaby, A. M.

doi:10.2147/opth.s21297

Cited by 32 publications

(23 citation statements)

References 11 publications

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“…4 The latest development in posterior lamellar keratoplasty is Descemet membrane endothelial keratoplasty (DMEK), a surgical procedure in which only an isolated donor Descemet membrane and its endothelial layer are transplanted. 7,8 In addition, patients commonly mention a distinct improvement of color perception after DMEK surgery, suggesting reduced color vision in FED-affected eyes. 6 Standard full contrast visual acuity may often be the key to decide the surgical treatment in patients with FED.…”

mentioning

confidence: 99%

Changes in Color Vision and Contrast Sensitivity After Descemet Membrane Endothelial Keratoplasty for Fuchs Endothelial Dystrophy

Cabrerizo

Livny

Musa³

et al. 2014

Cornea

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In FED, DMEK may not only be effective for obtaining a higher visual acuity but particularly improving the contrast sensitivity may also lead to better subjective optical performance. Although frequently mentioned spontaneously by patients, an objective change in color vision could not be substantiated. Hence, quantifying contrast sensitivity before surgery may aid in the decision for surgery, and in the evaluation of surgical outcome.

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mentioning

confidence: 99%

Changes in Color Vision and Contrast Sensitivity After Descemet Membrane Endothelial Keratoplasty for Fuchs Endothelial Dystrophy

Cabrerizo

Livny

Musa³

et al. 2014

Cornea

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“…Previously, studies have utilized the ocular response analyser (ORA) to investigate corneal biomechanical differences following keratoplasty. Yeneral et al and Hosny et al revealed a lower corneal hysteresis (CH) and corneal resistance factor (CRF) for PKP‐treated corneas, compared to healthy corneas, and DALK‐treated corneas. However, Jafarinasab et al demonstrated no significant difference between PKP‐ and DALK‐treated corneas for either parameter.…”

Section: Discussionmentioning

confidence: 99%

Comparison of corneal biomechanical properties following penetrating keratoplasty and deep anterior lamellar keratoplasty for keratoconus

Ziaei

Vellara

Gokul

et al. 2019

Clinical Exper Ophthalmology

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Importance Keratoplasty is a surgical procedure to create a more regular optical surface following biomechanical weakening of the cornea in keratoconus. The ideal keratoplasty procedure should also restore corneal biomechanics to that of the healthy cornea. Background This study aimed to evaluate and compare the biomechanical properties of corneas following penetrating keratoplasty (PKP) and predescematic deep anterior lamellar keratoplasty (DALK) to those of healthy eyes. Design Prospective cross‐sectional study. Participants Two cohorts of post‐keratoplasty eyes (42 eyes with PKP and 27 eyes with DALK) with each other, and with a cohort of 152 healthy eyes. Methods All eyes were examined by slit‐lamp biomicroscopy, tomography, anterior segment‐OCT and non‐contact tonometry CorVis ST (CST). Main Outcome Measures CST biomechanical parameters, maximum corneal deformation (MCD) and corneal energy dissipation were compared between keratoplasty techniques, and with healthy eyes. Results The mean age of participants with PKP and DALK were 35 ± 13.7 and 36.1 ± 12.6 years, respectively. None of the CST parameters were significantly different between PKP and DALK eyes. However, when compared to healthy corneas, numerous parameters were significantly different for both keratoplasty techniques. Of note, MCD was significantly higher in PKP compared to DALK and healthy corneas, after controlling for co‐factors. Conclusions and Relevance Neither type of keratoplasty technique utilized in keratoconus completely restored corneal biomechanical properties to that of healthy corneas. However, PKP resulted in a greater number of parameters significantly different to healthy corneas, compared to DALK.

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“…6 A few studies have investigated biomechanical properties of corneas thickened by stromal edema or DSAEK. [7][8][9][10][11] To the best of our knowledge, however, no studies have characterized these metrics in pseudophakic bullous keratopathy (PBK) before and after DSAEK. The purpose of the present study was to determine the extent to which DSAEK can alter these parameters in PBK.…”

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confidence: 99%

Changes in Corneal Biomechanical Properties After Descemet Stripping Automated Endothelial Keratoplasty for Pseudophakic Bullous Keratopathy

Faramarzi

Feizi²,

Najdi³

et al. 2016

Cornea

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Changes in corneal biomechanics following different keratoplasty techniques

Cited by 32 publications

References 11 publications

Changes in Color Vision and Contrast Sensitivity After Descemet Membrane Endothelial Keratoplasty for Fuchs Endothelial Dystrophy

Changes in Color Vision and Contrast Sensitivity After Descemet Membrane Endothelial Keratoplasty for Fuchs Endothelial Dystrophy

Comparison of corneal biomechanical properties following penetrating keratoplasty and deep anterior lamellar keratoplasty for keratoconus

Changes in Corneal Biomechanical Properties After Descemet Stripping Automated Endothelial Keratoplasty for Pseudophakic Bullous Keratopathy

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