Clinical Study
Simultaneous Phacoemulsification and Graft Refractive Surgery in Penetrating Keratoplasty Eyes
Table 2
Coupling ratio (CR) and coupling constant (CC) calculated on the basis of keratometry.
| Characteristic | Mean ± SD (range) |
| Flattening of incised meridian (D) | 2.49 ± 2.86 (−2.50 to 6.95) | Steepening of opposite meridian (D) | 3.73 ± 2.78 (−1.50 to 8.02) | CR | 0.70 ± 1.24 (−1.33 to 3.56) | CC | 0.04 ± 0.58 (−0.67 to 1.75) |
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D: diopter; SD: standard deviation.
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