LETTER
Association between heavy computer users and glaucomatous visual field abnormalities
Correspondence to:
Correspondence to:
Dr King-Sai Leung
The Chinese University of Hong Kong, Hong Kong Eye Hospital, 27B Seymour Road, G/F Hong Kong, China 00-852; ksleung@lycos.co.uk
Keywords: computer use; glaucoma
| The first 150 words of the full text of this article appear below. |
I congratulate Dr Tatemichi and his team on the interesting study on the possible association between heavy computer use and glaucomatous visual field abnormalities.1 I would like to take this opportunity to share some of my thoughts:
(1) The authors concluded that heavy computer users with refractive errors have an increased risk of FDT-VFA and that glaucoma might be involved. I do not totally agree to this. It has been established that heavy visual task is associated with myopic progression2 and significant myopia is associated with open angle glaucoma (OAG).3,4 But these arguments cannot lead to a sensible inference that heavy visual task is in any association with OAG. The authors have failed to find another underlying mechanism between heavy visual task and glaucoma other than myopia.
(2) Several limitations have been mentioned in this study, namely the limitations of a cross sectional study, possible bias towards male, myopia, normal
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