Posts Tagged "護眼"

Source：Specialist in Ophthalmology, Dr. Chan Cheuk Ki

Eyes are the windows to our souls, and we should take good care of them. There are various claims regarding eye protection, so which ones are true?

Claim 1 — Looking at more green scenery can prevent myopia?

To prevent myopia, we can start with environmental factors, such as cultivating good reading habits. We can follow the 20-20-20 rule, which means taking a 20-second break every 20 minutes of reading. During the break, you can close your eyes or look at something 20 feet away, like green trees. Therefore, the popular belief that looking at green scenery can rest the eyes is not about the color green itself but about focusing on distant objects. When looking at distant objects, the ciliary muscles of the eye, responsible for lens adjustment, can relax, slowing down the progression of myopia.

Claim 2 — Doing eye massages can prevent myopia?

As for eye massages, there is currently no scientific evidence to support their effectiveness. However, there is a small tip for everyone: research conducted abroad has shown that engaging in more outdoor activities can help reduce the progression of myopia. Therefore, parents can take their children to the countryside or parks more often to play.

Claim 3 — Wearing glasses irregularly can worsen myopia

Firstly, myopia is the ability to see clearly up close but blurrier in the distance. If a child has myopia and needs to see clearly in the distance, such as during class, wearing glasses is necessary to have a clearer vision and not hinder learning. However, if a child has a mild degree of myopia, around 100 to 200 degrees, they can actually take off their glasses when looking at close objects like doing homework. As long as they can see close objects clearly at an appropriate distance without glasses, it is fine. However, it is important to note that if a child has amblyopia or strabismus, they must strictly follow the doctor’s instructions and may need to wear glasses for an extended period if necessary. Failing to do so may worsen the condition of strabismus or amblyopia.

資料來源：眼科專科醫生陳卓琪

眼睛是我們的靈魂之窗，我們應當好好保護它們。對於保護眼睛，坊間有不少說法，有哪些是真的呢？

說法一 —— 看多些綠色景物可以預防近視？

要預防近視可以從環境因素著手，譬如培養良好的閱讀習慣。我們可以採取20 20 20這個原則，即是每20分鐘的閱讀就休息20秒，休息時間可以閉上眼睛休息或看些20尺以外的事物，譬如是綠色樹木。所以坊間流傳看綠色景物可以讓眼睛休息，其實重點並不是綠色的景物，而是看遠處的景物。因為看遠處景物的時候，我們調節晶狀體的肌肉「睫狀肌」可以得到放鬆，那就可以減慢近視加深。

說法二 —— 多做眼睛按摩可以預防近視

至於眼部按摩，暫時還沒有科學根據顯示有用。不過有個小小提示給予大家，外國已經有研究顯示，多些戶外活動可以減輕近視加深，所以家長可多些帶小朋友到郊外或公園玩耍。

說法三 —— 不定時戴眼鏡會加深近視

首先，近視是看近處清楚，看遠處則是模糊的。如果小朋友患上近視，當看遠處如上課時，就要配載眼鏡，這樣看影像會比較清晰，那就不會影響學習。若果小朋友近視度數比較淺，即100至200度左右，當他們看近的事物如做功課時，其實可以放下眼鏡。只要他們看近的事物時，是用適當的距離且清晰的話，不戴上眼鏡是沒有問題的。但是要特別留意的地方就是，如果小朋友有弱視或斜視，就必須完全跟隨醫生指示，有需要的話可能要長時間戴眼鏡。若不是這樣，斜視和弱視的情況便有機會惡化。