如何控制近視加深？

在香港，小學一年級學生約有 18.3% 近 視，而到小學畢業時，比率已急升到約 61.5% ，21-30 歲的成人更高達84.7%。近視的度數會隨著年齡而增加，到大約20歲才穩定下來。

近視600度以上是深度近視。隨着近視度數愈深，患上眼病的機會也越大。深近視人士患上視網脫落的風險比5.00度近視以下的人士高212倍，白內障的風險比無近視的人高7.8倍，青光眼的風險比無近視的人高4.6倍。有41%的深近視人士會出現黃斑病變。

傳說古時的中國人睡覺時在眼睛上放上沙包來阻止近視加深。傳說的可信性不得而知，但這方法很類似現代的角膜矯形術。

不過無論你用什麼方法，控制近視，應從生活開始。

每日有 1- 2 小時的戶外活動
近代的研究發現，小朋友越多戶外活動，近視加深得越慢。數據顯示，父母有近視的小朋友，如每星期少於5小時的戶外活動，患上近視之機會高達60%可是香港大部份的小朋友都忙於功課和補習，戶外活動時間嚴重不足。

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良好坐姿，充足的光線
在動物身上的研究証實，昏暗的環境會引致近視。所以家中工作或閱讀時光線一定要足夠。我們建議看書或做功課時最好有 400-500 lux 左右的燈光。

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減少電子產品
6 至 12 歲兒童應限制每天花少於兩小時在電子屏幕產品上。

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適當距離

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適當休息

請按以下項目了解更多：

近視控制眼鏡片 每日即棄近視控制隱形眼鏡 角膜矯形術 (Orthokeratology)

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Others

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CUHK, Early prevention of myopia reduces risk of blindness The Chinese University of Hong Kong Eye Centre launches Public Eye
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