Table 1. Characteristics of the study population used in the studya.
| Cases/Controls | Category | Subcategory | First stage | Second stage |
| Cases: Patients with pathological myopia | Number | 297 | 533 | |
| Age (years) | 58.8±13.2 | 59.0±14.3 | ||
| Gender | Male | 93 | 171 | |
| Female | 204 | 362 | ||
| Axial length (mm) | Right eyes | 29.97±1.36 | 29.04±1.97 | |
| Left eyes | 29.84±1.37 | 28.91±1.89 | ||
| Refraction of the phakic eyes (Diopter)b | Right eyes | −14.94±4.04 | −12.40±4.48 | |
| Left eyes | −14.64±3.98 | −12.07±4.72 | ||
| Controls: general Japanese population | Number | 934 | 977 | |
| Age (years) | NA | 48.3±16.3 | ||
| Gender | Male | NA | 497 | |
| Female | NA | 480 |
The ± sign is a standard deviation.
a
The study population after quality control procedures.
b
For the calculations of refraction, 177 eyes (29.8%) in the first stage and 303 eyes (28.4%) in the second stage that had undergone cataract surgery or corneal refractive surgery were excluded.