Table 3 Percentage of patients that gain or lost one line of corrected distance visual acuity (CDVA) 6 months after intracorneal ring segment implantation
From: Criteria for patient selection and indication for intracorneal ring segments in keratoconus
Keratoconus | Success CDVA (%) | Failure CDVA (%) |
|---|---|---|
Grade I | 13.5 | 51.0 |
Grade II | 49.4 | 29.8 |
Grade III | 54.0 | 18.9 |
Grade IV | 81.3 | 9.3 |
Grade Plus | 85.1 | 11.1 |