Department of Ophthalmology, Peking University First Hospital, Beijing, 100034, China.
Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Ophthalmology & Visual Sciences Key Laboratory, NO.1 Dongjiaominxiang Street, Dongcheng District, Beijing, 100730, China.
BMC Ophthalmol. 2024 Sep 16;24(1):405. doi: 10.1186/s12886-024-03675-4.
To investigate the effects of different reading postures on intraocular pressure (IOP) and near-work-induced transient myopia (NITM) in children with myopia.
Sixty myopic children were instructed to read a book text placed at 33 cm for 30 min with two different reading postures: head bowed and head upright postures. The participants' IOP and NITM were assessed using a rebound tonometer and an open-field autorefractor. The measurement of IOP was conducted prior to reading, during reading sessions (at 5, 10, 20, and 30-min intervals), and after a 5-min recovery period.
For the head bowed posture, the mean baseline IOP was 16.13 ± 2.47 mmHg. A significant rise in IOP was observed after 5 min of reading (17.17 ± 2.97 mmHg; +1.03 ± 2.29 mmHg; p = 0.014). Subsequent measurements revealed a further increase after 20 min (17.87 ± 2.90 mmHg; +1.73 ± 2.58 mmHg; p < 0.001), which continued to persist even after 30 min of reading (17.57 ± 3.46 mmHg; +1.43 ± 2.66 mmHg; p = 0.002). The IOP at different time points measured in the head upright posture did not show any significant difference in comparison to the baseline measurement (all p = 1.000). Compared to reading with the head upright, reading with the head bowed resulted in a greater increase in IOP at each time point (p < 0.05). Furthermore, the NITM was higher for reading with the head bowed than for reading with head upright at 30 min (-0.24 ± 0.53 D vs. -0.12 ± 0.47 D, p = 0.038).
Reading in a head bowed position resulted in greater increases in IOP and NITM compared to reading in a head upright posture.
研究不同阅读姿势对近视儿童眼压（IOP）和近距工作诱导的短暂性近视（NITM）的影响。
指导 60 名近视儿童用两种不同的阅读姿势阅读 33cm 处的书本：低头和抬头姿势。使用回弹眼压计和开放式自动折射计评估参与者的 IOP 和 NITM。在阅读前、阅读期间（每隔 5、10、20 和 30 分钟）以及 5 分钟恢复期后测量 IOP。
低头姿势时，平均基础 IOP 为 16.13±2.47mmHg。阅读 5 分钟后，IOP 明显升高（17.17±2.97mmHg；+1.03±2.29mmHg；p=0.014）。后续测量显示，20 分钟后进一步增加（17.87±2.90mmHg；+1.73±2.58mmHg；p<0.001），即使在 30 分钟阅读后仍持续存在（17.57±3.46mmHg；+1.43±2.66mmHg；p=0.002）。抬头姿势下不同时间点测量的 IOP 与基线测量值相比无显著差异（均 p=1.000）。与抬头阅读相比，低头阅读在每个时间点都导致 IOP 更大幅度的增加（p<0.05）。此外，低头阅读时的 NITM 高于抬头阅读时的 NITM，在 30 分钟时为-0.24±0.53D 比-0.12±0.47D（p=0.038）。
与抬头阅读相比，低头阅读会导致眼压和 NITM 更大幅度的增加。
