Research Article
The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
Table 2
High‐ and low‐ contrast visual acuity during orthokeratology wear at different visits.
| | Parameter (mean ± SD) | HC VA (logMAR) | LC VA (logMAR) | CS (logMAR) | | Optical zone diameter (mm) | 5 mm | 6 mm | value | 5 mm | 6 mm | value | 5 mm | 6 mm | value |
| | PRE (BCVA) | −0.03 ± 0.12 | -0.01 ± 0.11 | 0.822 | 0.18 ± 0.09 | 0.17 ± 0.11 | 0.734 | 1.84 ± 0.16 | 1.59 ± 0.66 | 0.164 | | 1 day (UCVA) | 0.52 ± 0.36 | 0.38 ± 0.30 | 0.138 | — | — | | — | — | — | | 7 days (UCVA) | 0.02 ± 0.30 | −0.08 ± 0.16 | 0.176 | — | — | | — | — | — | | 15 days (UCVA) | −0.02 ± 0.12 | −0.04 ± 0.09 | 0.730 | 0.23 ± 0.33 | 0.38 ± 0.16 | 0.252 | 1.47 ± 0.59 | 1.67 ± 0.05 | 0.210 |
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D: diopters; mm: millimeters; SD: standard deviation; VA: visual acuity; CVA: corrected visual acuity; UCVA: uncorrected visual acuity; HC: high contrast; LC: low contrast; CS: contrast sensitivity.
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