Table A4.
Methods | Type of study: Interventional study Study design: Retrospective case series |
Participants | Country: the Netherlands Number of individuals with keratoconus: 14 Number of eyes: 15 Subgroups: preoperative, 1 day postoperative, 1 week postoperative, 1 month postoperative, 3 months postoperative, 6 months postoperative, 12 months postoperative Inclusion criteria: advanced keratoconus with ectatic progression (simK 1D Δ ± Kmax 2D Δ), follow-up ≥ 1 year, aberrometric and densitometric data (software version 1.17 Pentacam) Exclusion criteria: - |
Interventions | Donor tissue: artificial anterior chamber, epithelial removal, peeling Bowman layer (30G needle), ethanol 70% Surgical technique: scleral frown, mid-stromal pocket (Melles spatula set), glide (Visitec Surgical Glide), air removal, 70% ethanol, trypan blue, Bowman layer placement on the glide, graft insertion into stromal pocket, BSS in anterior chamber Postoperative medication: chloramphenicol eye drops 0.5% 6x/day (1 month), dexamethasone eye drops 0.1% 4x/day (1 month), followed by FML 4x/day, tapered to 1x/day over a period of 1 year |
Outcomes | Anterior Km (D), anterior Kmax (D), Spectacle CDVA (LogMAR), CL CDVA (logMAR), pre-existing corneal scarring, depth of BL implantation (%), anterior and posterior higher-order aberrations, corneal densitometry zone 0–2 mm, zone 2–6 mm, zone 6–10 mm (anterior 120 μm, central layer, posterior 60 μm), subjective improvement |