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Abstract #18438 Published in IGR 3-3

Refractive error and glaucoma

Grodum K; Heijl A; Bengtsson B
Acta Ophthalmologica Scandinavica 2001; 79: 560-566


PURPOSE: To study the association between refractive error, glaucoma damage, and intraocular pressure (IOP) in a large study population. METHODS: The authors examined 32,918 citizens of the city of Malmö, Sweden, aged from 57-79 years old, searching for individuals with undetected glaucoma. Refraction was measured with autorefractors. Glaucoma damage was defined as reproducible visual field defects with the Humphrey Full Threshold 24-2 program. RESULTS: Glaucoma prevalence was clearly associated with refractive state, increasing gradually with increasing myopia. This was seen in both males and females and persisted over the full age range. Glaucoma was significantly more common in myopic than in hyperopic eyes with low IOP readings (p = 0.024). The over-representation of glaucoma in myopic eyes declined with increasing IOP, and no relationship was observed in eyes with IOP 31 mmHg. CONCLUSIONS: In this large population, the prevalence of glaucoma increased with increasing myopia. The association between myopia and glaucoma was strong at lower IOP levels, and weakened gradually with increasing IOP. These findings indicate that myopia is an important risk factor for glaucoma, and particularly for normal tension glaucoma.

Dr K. Grodum, Department of Ophthalmology, Malmö University Hospital, Malmö, Sweden


Classification:

8.1 Myopia (Part of: 8 Refractive errors in relation to glaucoma)



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