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Myopia, low IOP risk factors for glaucoma, study says

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MALMO, Sweden — Myopes with lower intraocular pressure have a higher prevalence for glaucoma than myopes with higher intraocular pressure, according to results from a large study. Additionally, the higher the myopic deviation, the greater the glaucoma prevalence, researchers added.

Researchers here examined 32,918 citizens between 57 and 79 years of age for undetected glaucoma.

Glaucoma prevalence was clearly associated with a patient's refractive state, increasing gradually with increasing myopia, study authors said. The trend persisted across genders and over the full age range. Glaucoma was significantly more common in myopic than hyperopic eyes with low intraocular pressure (IOP) readings (P = 0.024). Myopic eyes with an IOP of 31 mm Hg or higher were not associated with glaucoma prevalence.

The study is published in the December issue of Acta Ophthalmologica Scandinavica.