Purpose: To develop guidelines for optimal visibility/readability of medical record information displayed on video display terminal (VDT) (computer monitor) screens for persons with diabetes mellitus by conducting a questionnaire survey of patients and comparing the results with clinical data regarding patient's vision. Methods: In this study, we conducted a questionnaire survey of 49 outpatients with diabetes mellitus regarding factors that promoted visibility and readability of medical record information displayed on VDT screens such as computer monitors. We compared the results to clinical data regarding patients' vision such as visual acuity and whether cataracts were present. Results: Of the 49 patients, 70% preferred a font size of 14 points or larger for text. Regarding line spacing, 73% of patients preferred spacing between 1.25 and 1.75. Regarding the proportion of screen area used to present information, 84% of patients selected a ratio between 50% and 80%. A significant positive correlation was found between visual acuity and preferred font size (r=0.34793, p=0.0192). Furthermore, patients with cataract (cataract+group) were significantly more likely to prefer wider line spacing (n=26; 1.51 ± 0.1) compared to those without cataract (n=22; 1.21 ± 0.1) (p=0.0189). Conclusions: We established basic guidelines for the design of information to be presented on VDT/computer monitor screens to persons with diabetes mellitus. In situations where the screen view can be adjusted individually, (1) the font size should be adjusted according to the person's visual acuity and (2) line spacing should be wider for individuals with cataract.
|Number of pages||5|
|Journal||Folia Ophthalmologica Japonica|
|Publication status||Published - Dec 2004|
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