Table 2.
Centration parameters of the human eye reported by various research groups
| Parameters | Pande et.al. [ 3 ] | Erdem et al. [ 26 ] | Chan CC et al. [ 28] | Yang Y et al. [ 54 ] | ||||
|---|---|---|---|---|---|---|---|---|
| PC from VA (mm) | 0.75 (max) 0.34 ± 0.20 temp | - | - | - | ||||
| CR from VA (mm) | 0.62 (max)0.021 ± 0.16 nas | - | - | - | ||||
| GCC from VA (mm) | 1.06 (max)0.55 ± 0.22 temp | - | - | - | ||||
| PC to CR (mm) | - | Pho0.336 ± 0.181 (temp) | Mes:0.345 ± 0.195(temp) | Dil:0.339 ± 0.170 (temp) | Pre-op:0.34 ± 0.24 (nas) | 1 D post-op: 0.10 (temp) | 3 M post-op: 0.07 (temp) | |
| Mean magnitude of PC shift (mm) | - | Mes to Pho: 0.084 ± 0.069 | Pho to Dil: 0.149 ± 0.080 | Mes to Dil: 0.102 ± 0.104 | - | Mes to Pho: 0.133 | ||
Dil: pharmacologically dilated conditions; Mes: mesopic; Pho: photopic; PC: entrance pupil center; GCC: geometrical corneal center; CR: coaxially sighted corneal reflex; VA: corneal intercept of visual axis; temp: temporal; nas: nasal; D: day; M: month.