Diamond burr lamellar keratoplasty shows promise for treating corneal scarring
Diamond Burr Lamellar Keratoplasty (DBu-LK) is a promising manual technique for improving vision in patients with post-infectious corneal scarring by achieving a thinner and more transparent corneal bed, according to a poster presented at the 2025 World Cornea Congress.
In the procedure, the depth of corneal scars was first assessed using anterior segment optical coherence tomography (AS-OCT). The cornea was then trephined to a pre-determined depth, followed by stromal dissection with a beaver crescent knife. Under intraoperative AS-OCT guidance, a fine-grit 3.5mm diamond burr (Algerbrush II) was used to polish the stroma, enhancing transparency.
Among 4 patients who underwent DBu-LK, the average scar depth was 445.1 ± 49.9µm, with an initial best-corrected visual acuity (BCVA) of 1.5 ± 0.8 logMAR. One year after surgery, the mean residual stromal depth was reduced to 96.1 ± 18.2µm, and BCVA improved to 0.8 ± 0.1 logMAR.
Reference
Huang J, et al. Outcomes of Diamond Burr Lamellar Keratoplasty (DBu-LK) for Patients with Post-Infectious Corneal Scarring. Poster presented at: 2025 World Cornea Congress; March 20-22, 2025; Washington, DC.
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