The effect of sustained VDU and Non-VDU nearwork on visual acuity and refractive error in emmetropic primary schoolchildren. Scand J Optom Vis Sci [Internet]. 2012 Jul. 17 [cited 2026 Mar. 14];5(1):22-7. Available from: https://open.lnu.se/index.php/sjovs/article/view/3385