Patients with poorer baseline visual acuity or who had no preexisting eye disease reported more improvement in visual acuity in the operated eye. Several factors including no preexisting eye disease were associated with better final visual acuity and visual function scores.

No author has a financial or proprietary interest in any material or method mentioned.

There was a strong association between the occurrence of DLK after LASIK with the use of the Codman surgical marker pen. One or more constituents of the ink in the Codman pen may have been responsible for this series of cases.