This study aimed to investigate the subjective health complaints (SHC) in the teaching profession of Hong Kong. On the basis of the SHC inventory, a questionnaire was prepared for data collection through a mail survey. A total of 1710 usable questionnaires were returned by the primary or secondary school teachers. The results showed that 99.5% (n = 1702) of respondents suffered at least one typ...

BACKGROUND This paper investigates viewing distances and eyestrain symptoms in young adults reading from a smartphone for 60 minutes. METHODS A survey related to common asthenopic (eyestrain) symptoms was administered to subjects before and after they read an extract from a novel on a smartphone for 60 minutes. Subjects rated their symptoms on a scale from zero (not at all) to four (extremely...

Increase in usage of digital devices and mandatory e-learning imposed during the Covid 19 pandemic curfew may have given rise to an emerging public health threat eyestrain among undergraduate medical students state. The study aimed assess distribution determine association between screen time spent on different for social media use. A cross sectional, questionnaire based online was done a teach...

High quality flat panel computer displays (FPDs) with high resolution screens are now commonplace, and black, grey, white, beige and silver surrounds ('bezels'), matt or glossy, are in widespread use. It has been suggested that bezels with high reflectance, or with a high gloss, could cause eyestrain, and we have investigated this issue. Twenty office workers (unaware of the study purpose) used...