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Updated: Nov 9, 2025

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Published on: November 12, 2015
One-Year Front Versus Central and Paracentral Corneal Changes After Bowman Layer Transplantation for Keratoconus
Abdo K Tourkmani1, Tariq Mohammad1, Eleanor McCance1
1Eye Unit, Royal Gwent Hospital, Newport, Wales, United Kingdom ; and.
Purpose:
To report the front corneal versus central and paracentral corneal changes after Bowman layer transplantation for keratoconus in a tertiary hospital in the United Kingdom.
Methods:
Five eyes of 5 patients receiving Bowman layer transplant for advanced keratoconus in Royal Gwent Hospital (Newport, United Kingdom) were included. Preoperative and postoperative visual acuity; Kmax; Kmean, and corneal cylinder in the front cornea, 4.5 mm central, and 6 mm central; and corneal thickness were analyzed.
Results:
Corneal flattening and reduction in corneal astigmatism was observed, more marked in the central and paracentral zone, allowing for improvement in best-corrected visual acuity with the aid of visual correction in 4 eyes.
Conclusions:
These results support previous data reporting Bowman layer transplantation as a useful strategy in the treatment of advanced keratoconus and suggest greater attention may be focused on central or paracentral corneal changes.

