Introduction: According to the level of intraocular pressure (IOP), open angle glaucoma is divided into high tension glaucoma (HTG) and normal tension glaucoma (NTG).
Objective: To determine if there are differences in the distribution of patients by age and sex between NTG and HTG.
Methods: Our prospective study included 30 patients with NTG and 30 with HTG. A complete eye examination was performed. The examination included measuring of intraocular pressure by Goldmann applanation tonometry, examination of optic disc head by indirect ophthalmoscopy with Volk 90 D lens and visual field examination using the Octopus program.
Results: The average damage of visual field in the group of patients with NTG was 8.14 +/- 4.43 dB, while in the group with HTG it was 7.40 +/- 2.84 dB (p > 0.05). The average age of the group of patients with NTG was 66 +/- 11.58 years, while among those with HTG the average age was 59.7 +/- 11.63 years (p < 0.01). Among the patients with NTG there were three times more women than men (chi2 = 9.124; p < 0.01), while in the group of patients with HTG there were more men than women, but without statistically significant difference between the tested groups (chi2 = 1.851; p > 0.05).
Conclusion: Open angle glaucoma is a disease of elderly population. According to our results, risk factors for this disease can be age and sex. NTG is more frequently present than HTG among elderly population and females.
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