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Article |

Examination Methods for Glaucoma Prevalence Surveys

Harry A. Quigley, MD; Sheila K. West, PhD; Beatriz Munoz, MSc; B. B. O. Mmbaga, MD; Yoseph Glovinsky, MD
Arch Ophthalmol. 1993;111(10):1409-1415. doi:10.1001/archopht.1993.01090100117038.
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Objective:  To perform a pilot evaluation of new examination methods for the detection of glaucoma and other causes of visual impairment in rural East Africa.

Design:  Testing was performed by local eye nurses after a brief training course. Two novel tests of visual function were used, a scotopic sensitivity test and a visual field test performed on a laptop computer. The optic disc was examined with direct ophthalmoscopy after pupillary dilation and compared with standard photographs on a laminated card. Intraocular pressure was measured with a hand-held, electronic tonometer.

Setting:  Rural Tanzania.

Participants:  One hundred twenty adult villagers.

Results:  The visual function tests could be performed on more than 90% of subjects, and the results were correlated with the size of the optic disc cup, an objective measure of glaucoma injury.

Conclusions:  This survey shows the practicality of instrumentbased testing of visual function under field conditions.


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