Deep anterior lamellar keratoplasty with a manual spatula: Anatomical and functional results.
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Date
2014-05
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Abstract
Objective: Evaluate the anatomical, refractive, and functional results of an innovative technique of
deep anterior lamellar keratoplasty with a manual spatula. Materials and Methods: We evaluated the
results and examinations of 16 eyes from 14 patients who underwent deep anterior lamellar keratoplasty
using the technique described by Ferrara. Residual bed thickness after keratoplasty was evaluated
postoperatively using Visante. The measurement was performed using a technique similar to that used
to measure fl ap thickness after laser in situ keratomileusis refractive surgery. The measurements were
performed at the center of the cornea in an area comprising the central 3-mm in the 45° and 135° meridians.
Results: Best-corrected visual acuity was 0.34 ± 0.18 LogMar (0.09 to 0.60 LogMar), the spherical equivalent
was -4.31 ± 3.38 D (+0.25 to -9.50 diopters), and keratometry was 45.75 ± 2.77 D (41.11 to 52.48 diopters)
postoperatively. Corneal astigmatism was 3.19 ± 2.78 D (0.18 to 11.81 diopters). Residual stromal bed
thickness measured by optical coherence tomography showed values of 67.1 ± 24.3 μm (30 to 109 μm). The
statistical correlation by Spearman’s test between the best-corrected visual acuity and the residual stromal
bed thickness was 0.11 (P = 0.67). Conclusion: Deep anterior lamellar keratoplasty, in which manual
dissection was performed using an instrument similar to that used to implant corneal rings, provided good
visual and anatomical results.
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Keywords
Cornea, corneal transplantation, eye diseases, keratoconus, ophthalmology
Citation
de Lima Mário Henrique Camargos, Rizzi Alex Roque, Simoceli Rosângela Aparecida, Cresta Fernando Betty, Alves Milton Ruiz. Deep anterior lamellar keratoplasty with a manual spatula: Anatomical and functional results. Indian Journal of Ophthalmology. 2014 May ; 62 (5): 545-548.