TableĀ 1 Changes in corrected distance visual acuity (CDVA) from preoperative to postoperative 6 months (M) after intracorneal ring segment implantation
From: Criteria for patient selection and indication for intracorneal ring segments in keratoconus
CDVA | Preoperative | Postoperative 6Ā M | P value |
|---|---|---|---|
Grade I | 0.05āĀ±ā0.05 (0.05 toāāā0.10) | 0.08āĀ±ā0.20 (0.40 toāāā0.11) | <ā0.01 |
Grade II | 0.15āĀ±ā0.10 (0.22 to 0.08) | 0.14āĀ±ā0.20 (0.50 toāāā0.11) | 0.04 |
Grade III | 0.35āĀ±ā0.51 (0.40 to 0.26) | 0.26āĀ±ā0.20 (1.00 to 0.00) | <ā0.01 |
Grade IV | 0.57āĀ±ā0.06 (0.70 to 0.42) | 0.30āĀ±ā0.20 (1.30 to 0.00) | <ā0.01 |
Grade Plus | 1.10āĀ±ā0.06 (0.01 to 0.15) | 0.42āĀ±ā0.25 (1.30 to 0.00) | <ā0.01 |