인공눈물의 주성분에 따른 컴퓨터 게임 후 조절기능및 자각증상의 변화

Purpose: This study was conducted to investigate the effect of artificial tears, which contain active components relieving dryness and eye strain based on changes in accommodative function and subjective symptoms during computer gaming. Methods: Thirty subjects in their twenties without eye diseases, systemic diseases, or visual dysfunctions were classified into two groups according to their tear volume: normal eyes and dry eyes. The subjects were administered three different types of artificial tears before and after computer gaming, which were primarily composed of carboxymethyl cellulose sodium (CMC); neostigmine (Neo); and Vitamin A, B6, and E and neostigmine (Neo+Vit). The subjects’ accommodative function and subjective symptoms were measured and compared after performing the same task with and without the application of artificial tears. Results: Although the accommodative function of normal eyes after computer gaming did not show significant difference from the baseline regardless of instillation of all the three types of artificial tears before gaming, accommodative function in dry eyes demonstrated the most significant effect in terms of monocular accommodative amplitude and monocular and binocular accommodative facilities with the instillation of Neo+Vit. Evaluation of subjective symptoms revealed that artificial tears containing Neo+Vit showed a tendency to improve the subjective symptoms in normal and dry eyes. However, in dry eyes, the general and ocular subjective symptoms scores were significantly decreased with the instillation of CMC, and a significant reduction in general discomfort, dizziness, eye strain, and eye fatigue was noted. Conclusions: From these results, it was revealed that instillation of artificial tears containing components that relieving eye strain was effective in improving accommodative function and subjective symptoms when working with a digital display. However, their effectiveness differed depending on the subjects’ tear volume. In case of dry eyes with insufficient tear volume, using artificial tears containing Neo+Vit as the active components may be effective for alleviating eye strain.