J Korean Ophthalmol Soc.  2011 Dec;52(12):1478-1484. 10.3341/jkos.2011.52.12.1478.

Analysis of Factors Related of Location of Initial Visual Field Defect in Normal Tension Glaucoma

• Kang BW
• Ji YS
• Park SW

• KMID: 2215152
• DOI: http://doi.org/10.3341/jkos.2011.52.12.1478

Abstract

PURPOSE
To investigate the risk factors related to the location of visual field defects in normal tension glaucoma.
METHODS
Eighty-one eyes diagnosed as normal tension glaucoma in patients with early glaucomatous visual field defects were divided into central visual field defects and peripheral visual field defects. The difference between the 2 groups based on the intra-individual comparison were assessed with several ocular risk factors such as sex, age, hypertension, diabetes mellitus, smoking, laterality, intraocular pressure, central corneal thickness, cup-disc ratio, peripapillary atrophy, mean deviation, pattern standard deviation, best corrected visual acuity, and refractive errors.
RESULTS
The incidence of hypertension in the central visual field defects group (60.6%) was higher than in the peripheral visual field defects group (22.9%, p = 0.001). The central corneal thickness in the central group (533.1 +/- 18.2 microm) was thinner than in the peripheral group (545.0 +/- 30.0 microm, p = 0.003). Hypertension was the only risk factors for central visual field defects (p = 0.001). In both the central group and peripheral group, upper visual field defects were more common than lower defects.
CONCLUSIONS
Hypertension in patients with normal tension glaucoma was a factor involved in central visual field defects. Additionally, numerous visual field defects were mainly found the superior portion.

Keyword

Hypertension; Normal tension glaucoma; Visual field defect

MeSH Terms

Atrophy
Diabetes Mellitus
Eye
Humans
Hypertension
Incidence
Intraocular Pressure
Low Tension Glaucoma
Risk Factors
Smoke
Smoking
Visual Acuity
Visual Fields
Smoke

Figure

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  Figure 1. Visual field probability plot (pattern deviation) divided into 4 subfields: a central 10 degree (radius) and outer arcu-ate subfields in both superior and inferior hemifields (left eye).

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  Figure 2. Examples of visual field defect evaluation on visual field gray scale and pattern deviation scale (A, B) Central field defects, (C, D) Peripheral field defects. GHT = glaucoma hemifield test.

Reference

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