Recently, news of a 5-year-old girl developing ‘crossed eyes’—medically known as esotropia—due to excessive smartphone use has drawn widespread concern. According to her parents, the child spent hours each day staring closely at her phone screen, gradually developing inward eye deviation. An ophthalmologist diagnosed her with acute comitant esotropia. Experts explain that children’s visual systems are still developing, and prolonged close-range screen exposure can cause sustained tension in eye muscles, disrupting binocular coordination and potentially triggering strabismus. Moreover, excessive screen time may also lead to myopia, dry eyes, and even impact brain development. Doctors recommend that children under 3 avoid screens entirely, while those over 3 should limit daily screen time to no more than one hour, maintain a viewing distance of at least 30 centimeters, and follow the ’20-20-20’ rule: every 20 minutes, look at something 20 feet away for 20 seconds to relax eye muscles. Parents should model healthy habits by minimizing their own phone use around children and encourage more outdoor activities to support healthy visual development. Prevention is better than cure—good eye habits must start early.
近日，一则关于5岁女童因长期沉迷玩手机导致“斗鸡眼”（医学上称为内斜视）的新闻引发广泛关注。据家长反映，孩子每天长时间近距离盯着手机屏幕，逐渐出现眼睛向内偏斜的现象，经眼科医生诊断为急性共同性内斜视。专家指出，儿童视觉系统尚在发育阶段，长时间聚焦于近处电子屏幕，会使眼部肌肉持续紧张，破坏双眼协调能力，进而诱发斜视。此外，过度使用电子产品还可能造成视力下降、干眼症甚至影响大脑发育。医生建议，3岁以下儿童应尽量避免接触电子屏幕，3岁以上每日使用时间不宜超过1小时，并需保持至少30厘米的观看距离，同时每20分钟应远眺20秒以放松眼部肌肉。家长应以身作则，减少在孩子面前使用手机，并多引导孩子参与户外活动，促进视觉健康发育。预防胜于治疗，科学用眼习惯需从小培养。
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