Does Corneal Collagen Cross-Linking Effect the Repeatability and Reliability of Scheimpflug Imaging in Keratoconus?

Çiçek, Ayşe; Ataş, Mustafa; Arslan, Mahmut Erkam; Çobanoğlu, Hayrettin; Vural, Esra; Alabay, Bedirhan

doi:10.5336/medsci.2019-72509

Cited by 1 publication

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“…Consistent with this present study, the repeatability of corneal thickness measurements were found to be high both in normal, post-laser in situ keratomileuses and keratoconus eyes [1]. Recently, Cicek et al reported that higher limits of repeatability in K1, K2 and Kmax values in keratoconus patients after cross-linking treatment with Pentacam [18]. However, all computed corneal topography parameter ICCs were reported to have over 0.95 both in CXL and naïve keratoconus patients in the same report [18].…”

Section: Discussionsupporting

confidence: 91%

“…Recently, Cicek et al reported that higher limits of repeatability in K1, K2 and Kmax values in keratoconus patients after cross-linking treatment with Pentacam [18]. However, all computed corneal topography parameter ICCs were reported to have over 0.95 both in CXL and naïve keratoconus patients in the same report [18]. These results were also parallel to this current study.…”

Section: Discussionsupporting

confidence: 87%

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The repeatability of corneal topography measurements in severe Dry Eye disease

Güven

2022

BMC Ophthalmol

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Background To determine the repeatability of corneal topography measurements in severe dry eye disease (DED). A comparison of corneal topography parameters between severe DED and healthy subjects was a secondary goal of this study. Methods Sixty-nine patients with severe DED and 46 healthy subjects were enrolled in the study. All participants underwent repeated corneal topography measurements with Pentacam (Oculus, Germany) within a half hour time. Both eyes of the participants were used in statistical analysis. A further subcategorization of severe DED patients was performed according to Ocular Surface Disease Index (OSDI) scores: 32–50, 51–70 and 71–100. The repeatability of corneal parameters was assessed with correlation coefficients (CC). Results The mean age of dry eye patients and healthy subjects were 40.8 ± 13.2 (17–66) and 39.8 ± 8.2 (18–61) years (p:0.604) respectively. No significant differences were found between severe DED and control groups according to analysed corneal parameters in both eyes (p:>0.05). All CCs were greater than 0.9 in severe DED group (p:<0.001). All CCs were also greater than 0.9 in severe DED patients among different OSDI groups (p:<0.001). Conclusions Corneal topography measurements are highly repeatable in severe DED with Pentacam. This is the first report about this topic. Nonetheless, further studies are needed with different topography devices for validation.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 87%