Comparison of Densitometric Profile After Deep Lamellar Keratoplasty With Two Different Techniques for Treatment of Keratoconus Publisher Pubmed



Ghoreishi M^{1, 2} ; Kashfi A² ; Peyman M² ; Hanjani S² ; Mohammadinia M² ; Straiko M³ Show Affiliations
Source: International Ophthalmology Published:2019

Abstract

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. © 2018, Springer Science+Business Media B.V., part of Springer Nature.