Pseudomyopia -

Japanese: 仮性近視 - かせいきんし
Pseudomyopia -

What kind of disease is it?


<Treatment is difficult when myopia is also present>
Myopia is a condition in which the image is formed in front of the retina , making it difficult to focus on distant objects. It occurs when the distance from the cornea to the retina is too long or the refractive power of the crystalline lens, which is the lens of the eye , is too strong, and it is thought that genetic factors play a large role.
Children have naturally strong ciliary muscles that adjust the refractive power of the crystalline lens, and they may unknowingly tense up the ciliary muscles, causing a condition similar to myopia. This is called pseudomyopia .
If you spend a lot of time looking at close objects, such as when playing video games or reading, you are more likely to develop pseudomyopia.
There is also a theory that if treatment is given while the condition is in the pseudomyopic stage, the myopia can be cured.
However, pseudomyopia and true myopia often coexist, and the tendency for the eyes to become myopic as we age is inevitable.
Therefore, it is important to make a conscious effort to consume foods that are beneficial for eye health on a daily basis.

Related foods:


Anthocyanins resynthesize pigments in the retina
○Anthocyanin, a pigment found in blueberries and red perilla, has been attracting attention in recent years for its nutritional effect in improving eyesight.
It is said that research into the relationship between blueberries and eyesight began during World War II when Royal Air Force pilots who ate blueberry jam every day reported that they could see buildings better from the air during night flights.
We are able to sense that we can see things due to the activity of a pigment called rhodopsin in the retina, and it has been found that anthocyanins stimulate the resynthesis of this pigment, making them effective in preventing vision loss and eye fatigue.
Carotene, which helps maintain retinal health, is also a nutrient that is effective in restoring eyesight, and is found in large amounts in green and yellow vegetables such as carrots and pumpkin.
Vitamins B1 and B12 also improve the functioning of the optic nerve, making them effective in preventing myopia.
Vitamin B1 is found in large amounts in pork and eel, while B12 is found in large amounts in clams and liver.
○In traditional Chinese medicine , it is said that pouring hot water over dried chrysanthemum buds and drinking it, or drinking Habu tea three times a day, are effective in preventing myopia.
Conversely, avoid eating a lot of garlic, chili peppers, and ginger as these can worsen myopia.

Source: Shogakukan Medical Museum of Food Information

Japanese:

《どんな病気か?》


〈近視が混在していると治療はむずかしい〉
 近視とは、網膜(もうまく)より前に像を結んでしまい、遠くにあるものにピントが合いにくくなる状態をいいます。角膜(かくまく)から網膜までの距離が長いか、目のレンズにあたる水晶体(すいしょうたい)の屈折力が強すぎるかのどちらかが原因で起こり、遺伝的な素因が大きく関係していると考えられています。
 子どもはもともと水晶体の屈折力を調節する毛様体筋(もうようたいきん)の力が強く、知らず知らずのうちに毛様体を緊張させ、近視のような状態をまねいていることがあります。これが仮性近視(かせいきんし)です。
 テレビゲームや読書などで、近くを見ることが多いと、仮性近視をまねきやすくなります。
 仮性近視の状態のときに治療を行えば、近視は治るという考え方もあります。
 しかし、仮性近視とほんとうの近視が混在していることも多く、年齢とともに目が近視化する傾向は避けることができません。
 ですから、日ごろから目の健康に役立つ食品を意識的にとるように心がけたいものです。

《関連する食品》


〈アントシアニンが網膜の色素を再合成する〉
○栄養成分としての働きから
 近年、視力の改善効果があるとして注目されているのが、ブルーベリーや赤ジソに含まれているアントシアニンという色素です。
 第二次世界大戦中、ブルーベリージャムを毎日食べていた英国空軍のパイロットが、夜間飛行の際にも上空から建物がよく見えると報告したことから、ブルーベリーと視力との関係の研究がはじまったといわれています。
 ものが見えたことを感じるのは、網膜にあるロドプシンという色素が働いているからですが、アントシアニンはこの色素の再合成を活発にすることがわかっており、視力の低下や目の疲れを予防するのに効果があります。
 網膜の健康を保つカロテンも、視力を回復するのに効果のある栄養素で、ニンジン、カボチャなどの緑黄色野菜に多く含まれています。
 また、ビタミンB1やB12も、視神経の働きを高めてくれるので、近視の予防に有効です。
 ビタミンB1は豚肉やウナギに、B12はアサリやレバーに多く含まれています。
○漢方的な働きから
 漢方では、菊花のつぼみの乾燥したものに湯をそそいで飲む方法や、ハブ茶を1日3回飲むのが、近視の予防によいとされます。
 逆に、ニンニク、トウガラシ、ショウガの多食は近視を悪化させるので避けましょう。

出典 小学館食の医学館について 情報

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>>:  Pseudobulbar palsy

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