Table 1.
Demographic factors for low, medium and high-add participants. Myopes were defined as participants requiring a negative spherical-equivalent distance subjective refraction and all other participants were defined as hyperopes.
| Factor | Total | Low-add | Med-add | High-add |
|---|---|---|---|---|
| n = 43 | n = 13 | n = 18 | n = 12 | |
| Age (years) | 53 ± 5a | 48 ± 4a | 54 ± 5a | 56 ± 4a |
| Age range (years) | 42–63 | 42–57 | 48–63 | 49–63 |
| Female:male (%) | 53:47 | 62:38 | 44:56 | 58:42 |
| Neophytes:experienced contact lens wearers (%) | 30:70 | 15:85 | 44:56 | 25:75 |
| Ethnicity (%) | ||||
| Caucasian:Asian:Others | 74:12:14 | 85:8:8 | 67:17:17 | 75:8:17 |
| Myopesb | ||||
| Spherical equivalent (D) | −2.92 ± 1.50a | −2.94 ± 1.27a | −2.81 ± 1.96a | −3.00 ± 1.34a |
| Range (D) | −6.00 to −0.75 | −5.25 to −0.75 | −6.00 to −0.7 | −6.00 to −1.25 |
| Hyperopesb | ||||
| Spherical equivalent (D) | 1.62 ± 0.84a | 1.31 ± 0.83a | 1.56 ± 0.90a | 1.85 ± 0.73a |
| Range (D) | 0.25–3.25 | 0.50–2.25 | 0.25–3.25 | 0.75–2.75 |
| Keratometryb | ||||
| Flat power (D) | 43.27 ± 1.38a | 43.06 ± 1.53a | 43.35 ± 1.50a | 43.39 ± 1.02a |
| Steep power (D) | 43.84 ± 1.45a | 43.64 ± 1.57a | 43.94 ± 1.59a | 43.91 ± 1.12a |
a
Data expressed as mean ± SD.
b
Results presented for both eyes combined.