Comparison of densitometric profile after deep lamellar keratoplasty with two different techniques for treatment of keratoconus.

Autor: Ghoreishi M; Department of Ophthalmology, Isfahan University of Medical Sciences, Isfahan, Iran.; Parsian Vision Science Research Institute, Mir St., Isfahan, Iran., Kashfi A; Parsian Vision Science Research Institute, Mir St., Isfahan, Iran. drkashfi@gmail.com., Peyman M; Parsian Vision Science Research Institute, Mir St., Isfahan, Iran., Hanjani S; Parsian Vision Science Research Institute, Mir St., Isfahan, Iran., Mohammadinia M; Parsian Vision Science Research Institute, Mir St., Isfahan, Iran., Straiko M; Legacy Devers Eye Institute, Portland, USA.
Jazyk: angličtina
Zdroj: International ophthalmology [Int Ophthalmol] 2019 May; Vol. 39 (5), pp. 1105-1113. Date of Electronic Publication: 2018 May 05.
DOI: 10.1007/s10792-018-0921-3
Abstrakt: Purpose: To compare densitometric outcome of two techniques of deep lamellar keratoplasty using Pentacam HR corneal densitometry software.
Methods: Postoperative outcomes of 31 patients with big bubble (BB) and 28 patients with Melles (M) surgery for the treatment of keratoconus were evaluated. Data were gathered at least 3 months after the removal of all sutures including demographic data, uncorrected distance visual acuity (UCDVA), best spectacle-corrected visual acuity (BSCVA), refraction and endothelial cell count. Moreover, the Scheimpflug images were taken by Pentacam ® HR to assess keratometric profile, densitometric outcomes in different depths and zones of the cornea and central corneal thickness. Anterior segment OCT was performed in ten cases of M group.
Results: Thirty-one eyes with BB and 27 eyes M surgery were enrolled. Comparison of densitometric profile between groups revealed no statistical significance in zone 0-2 mm, zone 2-6 mm and zone 10-12 mm in all depths (all P values >  0.05). Zone 6-10 mm of M group had lower densitometric readings (more transparent) in anterior, central and posterior layers of the cornea in comparison with BB group (all P <  0.05). Also no statistical difference was found in UCDVA, BSCVA, spherical or cylindrical refractive error, and spherical equivalent, keratometric readings, endothelial cell count and central corneal thickness in two groups (all P values >  0.05).
Conclusion: Densitometric profiles were identical in both methods in visually important zones so as visual and refractive outcomes.
Databáze: MEDLINE
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