Objective: To describe a compressive lamellar surgical technique for treating severe astigmatism in peripheral corneal ectasia.
Design: Retrospective, noncomparative, interventional case series.
Participants: Four eyes of 3 patients with either pellucid or Terrien's marginal corneal degeneration were included in this series.
Methods: C-shaped lamellar keratoplasty using multiple trephines of different sizes, with deliberate undersizing of the donor graft for a controlled compressive effect, was performed on these patients.
Main outcome measures: Visual acuity outcome and refraction were measured at different intervals at up to 40 months of follow-up.
Results: All eyes achieved Snellen visual acuity of 20/40 or better and stable astigmatism ranging from 0 to -2.75 diopter cylinder within 6 months, with no recurrence of corneal thinning or peripheral corneal vascularization.
Conclusions: Compressive C-shaped lamellar keratoplasty is able to reduce severe corneal astigmatism in peripheral corneal ectasia and can result in good visual and refractive outcomes with early visual rehabilitation.