A Complete Collection of 100000 Whys
Fav十万个为什么
为什么眼镜片上有防蓝光镀膜？
简单的摘要：眼镜片上有防蓝光镀膜的原因主要是减少蓝光对眼睛的伤害、缓解视疲劳以及改善睡眠质量。
1、减少蓝光对眼睛的伤害：电子屏幕会发出大量蓝光，长期接触可能对视网膜细胞造成损伤，增加黄斑变性的风险。防蓝光镀膜可以有效过滤部分蓝光，减少对眼睛的伤害。
2、缓解视疲劳：蓝光容易导致眼睛疲劳和干涩。防蓝光镀膜通过减少进入眼睛的蓝光量，有助于缓解长时间使用电子设备导致的视疲劳。
3、改善睡眠质量：蓝光会抑制褪黑激素的分泌，影响睡眠质量。防蓝光镀膜可以减少蓝光对褪黑激素分泌的影响，从而帮助改善睡眠质量。
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