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Purpose <p>To investigate changes in strabismus angles in children and young adult patients with recent onset of constant acquired comitant esotropia (ACE) following instructions on hand-held digital devices (DD).</p> Study design <p>Prospective multicenter non-randomized interventional study.</p> Methods <p>This study included subjects aged 5–35 years who developed ACE within 1 year. Subjects were divided into two groups: (i) subjects who used DD for an average of ≥120 minutes/day for junior high-school students and older and ≥60 minutes/day for primary-school students and younger (DD+); and (ii) subjects who used DD for less than that (DD-) based on the questionnaire at the study’s start. During the initial visit, glasses were prescribed when necessary; verbal instructions on DD use including time reduction and viewing-distance elongation were provided. For each group, strabismus angles at the initial visit and at 3 months were compared. Cure was defined as esophoria within 8 prism diopters without symptoms.</p> Results <p>In total, 181 cases were investigated. At baseline, strabismus angles in DD+ and DD- groups were 23±14 PD and 25±15 PD at near and 25±13 PD and 27±14 PD at distance, respectively. At 3 months, they were 22±16 PD and 25±15 PD at near and 23±14 PD and 27±13 PD at distance, respectively. Only in the DD+ group, reduction in strabismus angle was observed, but this was not clinically significant. Ten and 1 subjects in DD+ and DD- groups were cured.</p> Conclusion <p>Although changes in strabismus angles were not large enough, DD use instructions were beneficial for some ACE subjects.</p>

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Impact of prolonged digital device use on acquired comitant esotropia: ACE-DD study 2

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  • 发表日期：

    2025年3月17日

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  • Hirohito Iimori,
  • Noriko Nishikawa,
  • Sachiko Nishina,
  • Tomoyo Yoshida,
  • Takafumi Mori,
  • Osamu Hieda,
  • Akiko Hikoya,
  • Miwa Komori,
  • Shion Hayashi,
  • Takashi Negishi,
  • Toshiaki Goseki,
  • Yoshiko Sugiyama,
  • Akiko Kimura,
  • Takeshi Morimoto,
  • Yukiko Shimizu,
  • Tamami Shimizu,
  • Yoshimi Yokoyama,
  • Hiroko Suzuki,
  • Sadao Suzuki,
  • Noriyuki Azuma,
  • Miho Sato

摘要

Purpose

To investigate changes in strabismus angles in children and young adult patients with recent onset of constant acquired comitant esotropia (ACE) following instructions on hand-held digital devices (DD).

Study design

Prospective multicenter non-randomized interventional study.

Methods

This study included subjects aged 5–35 years who developed ACE within 1 year. Subjects were divided into two groups: (i) subjects who used DD for an average of ≥120 minutes/day for junior high-school students and older and ≥60 minutes/day for primary-school students and younger (DD+); and (ii) subjects who used DD for less than that (DD-) based on the questionnaire at the study’s start. During the initial visit, glasses were prescribed when necessary; verbal instructions on DD use including time reduction and viewing-distance elongation were provided. For each group, strabismus angles at the initial visit and at 3 months were compared. Cure was defined as esophoria within 8 prism diopters without symptoms.

Results

In total, 181 cases were investigated. At baseline, strabismus angles in DD+ and DD- groups were 23±14 PD and 25±15 PD at near and 25±13 PD and 27±14 PD at distance, respectively. At 3 months, they were 22±16 PD and 25±15 PD at near and 23±14 PD and 27±13 PD at distance, respectively. Only in the DD+ group, reduction in strabismus angle was observed, but this was not clinically significant. Ten and 1 subjects in DD+ and DD- groups were cured.

Conclusion

Although changes in strabismus angles were not large enough, DD use instructions were beneficial for some ACE subjects.