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L. Barleon, J. Wahl, P. Morfeld, C. Deters, A. Lichtmeß, S. Haas-Brähler, B. Brähler, R. Breitstadt, N. Pfeiffer; EDMAGS (Evonik-Degussa-Mainz-Glaucoma-Study) II: Baseline Data. Invest. Ophthalmol. Vis. Sci. 2009;50(13):431.
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© ARVO (1962-2015); The Authors (2016-present)
To assess ophthalmological data and the prevalence of glaucoma in a working population of the chemical industry.
4234 out of 13037 employees of the Evonik Industries between 40 and 65 y were screened by one examiner (LB) within ten months. The examinations consisted of visual acuity, objective refraction, central corneal thickness (CCT), intraocular pressure (IOP), frequency doubling technology (FDT), confocal scanning laser ophthalmoscopy (HRT 3) and digital optic disc photography (non mydriatic retinal camera) for both eyes. Glaucoma suspects were identified by evaluation of the optic disc photography, IOP and FDT by a glaucoma expert (JW). The subjects were categorized in non-glaucoma suspects, glaucoma suspects (differentiating between possible or probable glaucoma cases).
980 female and 3254 male subjects were examined. 16 subjects had to be excluded due to missing data. Mean age was 48.2 y ± 5.5 y. The mean IOP for all subjects was 16.0 mmHg ± 3.4 mmHg and 358 subjects (8.5%) had an IOP > 21 mmHg in at least one eye. The mean central corneal thickness was 538.3 µm ± 32.9 µm. 4179 subjects had a visual acuity >= 16/20 in the better eye or >= 10/20 in the better eye and >= 4/20 in the worse eye. In total, we found 243 subjects with a pathological FDT in at least one eye. 4107 (97.0%) subjects were categorized as non-glaucoma suspects, 98 (2.31%) as possible glaucoma cases (3 of them already treated), and 13 (0.31%) as probable glaucoma cases (7 of them already treated). 18 of the glaucoma suspects had a pathological FDT in at least one eye and 61 had an IOP > 21mmHg in at least one eye. The youngest glaucoma suspects were just 40 years old (among them 1 probable glaucoma case).
The number of glaucoma suspects identified in this employed population proves the necessity of glaucoma screening programs among active workers. Taking into account healthy worker selection effects and the limited age (< 65 y) of the examined population the prevalence appears to be comparable to population-based studies. Mean IOP and mean CCT are similar to published results from other investigations.
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