TY - JOUR
T1 - No changes in the accommodative stimulus-response curve but varied lag of accommodation after a 30-min electronic near task under four different lighting conditions among myopic young adults
AU - Chen, Ai Hong
AU - Mazlan, Fazrin
AU - Strang, Niall
N1 - Funding Information:
This work was supported by the Fundamental Research Grant Scheme (FRGS) [FRGS/1/2022/ SKK06/UITM/01/1]. The authors thank Azmir Ahmad and Saiful Azlan Rosli for technical support and Dr Anna Yeo CH’s constructive comments.
PY - 2023/6/30
Y1 - 2023/6/30
N2 - The prevalence of myopia is increasing worldwide, mainly in Asian countries. Light-emitting diodes (LED) and low light levels used for homework after school was thought to contribute to myopia development. This study explored how near work and lighting affect the accommodation response. Thirty myopic young Malay adults (18-23 years old) were recruited. The ASRC was measured after performing a 30-min near the electronic task at 20cm using a binocular open-field autorefraction (Grand Seiko, Shin-Nippon) at 6.0 m, 1.0 m, 0.5 m, 0.33 m, 0.25 m, and 0.20 m under four different lighting conditions (Fluorescent 6500K, Fluorescent 3000K, LED 6500K, LED 3000K). A significant flattening in the ASRC gradient was noted when comparing pre and postmeasures following the near-vision task for all lighting conditions (p < 0.01). ASRC gradient differences were not affected by lighting conditions (One-way repeated measure ANOVA F (3,87) = 0.84, p > 0.05). ASRC gradient was affected only after 30 minutes of near work F (3,87) = 0.049, p < 0.05). The increment in the accommodative inaccuracy was apparent following prolonged close work. Types of light were not imperative. This information on short-term exposure can be useful for interior light choice of buildings. The effect of long-term exposure requires further investigation.
AB - The prevalence of myopia is increasing worldwide, mainly in Asian countries. Light-emitting diodes (LED) and low light levels used for homework after school was thought to contribute to myopia development. This study explored how near work and lighting affect the accommodation response. Thirty myopic young Malay adults (18-23 years old) were recruited. The ASRC was measured after performing a 30-min near the electronic task at 20cm using a binocular open-field autorefraction (Grand Seiko, Shin-Nippon) at 6.0 m, 1.0 m, 0.5 m, 0.33 m, 0.25 m, and 0.20 m under four different lighting conditions (Fluorescent 6500K, Fluorescent 3000K, LED 6500K, LED 3000K). A significant flattening in the ASRC gradient was noted when comparing pre and postmeasures following the near-vision task for all lighting conditions (p < 0.01). ASRC gradient differences were not affected by lighting conditions (One-way repeated measure ANOVA F (3,87) = 0.84, p > 0.05). ASRC gradient was affected only after 30 minutes of near work F (3,87) = 0.049, p < 0.05). The increment in the accommodative inaccuracy was apparent following prolonged close work. Types of light were not imperative. This information on short-term exposure can be useful for interior light choice of buildings. The effect of long-term exposure requires further investigation.
KW - Accommodative stimulus-response curve
KW - lighting
KW - myopes
KW - near task
U2 - 10.46754/jssm.2023.06.002
DO - 10.46754/jssm.2023.06.002
M3 - Article
AN - SCOPUS:85164598478
SN - 1823-8556
VL - 18
SP - 10
EP - 22
JO - Journal of Sustainability Science and Management
JF - Journal of Sustainability Science and Management
IS - 6
ER -