Daubs J G, Crick R P
Trans Ophthalmol Soc U K (1962). 1981;101(1):121-6.
From a case-control study of out-patients attending an ophthalmic clinic no relationship (relative risk = 1) was found between refractive error and ocular tension. The deconfounded effect of refractive error on open angle glaucoma (field loss) increased at higher levels of myopia (relative risk = 1.18; refractive error -0.2) The combined effects of myopia and severe ocular hypertension were found to be synergistic (interactive risk ratio = 2.2).
在一项针对眼科门诊患者的病例对照研究中，未发现屈光不正与眼压之间存在关联（相对风险=1）。在近视程度较高时，屈光不正对开角型青光眼（视野缺损）的去混杂效应有所增加（相对风险=1.18；屈光不正-0.2）。研究发现近视与严重高眼压的综合作用具有协同性（交互风险比=2.2）。
