A reliable and valid questionnaire was developed to measure computer vision syndrome at the workplace.

Objectives: To design and validate a questionnaire to measure visual symptoms related to exposure to computers in the workplace.

Study Design And Setting: Our computer vision syndrome questionnaire (CVS-Q) was based on a literature review and validated through discussion with experts and performance of a pretest, pilot test, and retest. Content validity was evaluated by occupational health, optometry, and ophthalmology experts.

Inconsistencies in guidelines for visual health surveillance of VDT workers.

Objectives: In Europe, 25% of workers use video display terminals (VDTs). Occupational health surveillance has been considered a key element in the protection of these workers. Nevertheless, it is unclear if guidelines available for this purpose, based on EU standards and available evidence, meet currently accepted quality criteria.