edithrobi44的部落格

你的護眼專家很有可能對此功法嗤之以鼻，因為他們根深蒂固的觀念，認為僅靠視力訓練是不可能改善視力的。既然驗光配鏡這個產業是以銷售眼鏡為主，會有此一反應也就不足為奇了。令視光師懊惱的是，眼鏡行和超市都已對老花眼鏡跳樓大拍賣，導致他們的生意一落千丈。

調節或會聚都與肌肉習習相關

坊間最流行的講法是眼睛的調節（或會聚）是無法學習的。然而，你卻可以訓練高爾夫揮杆或網球發球，並期望球藝逐漸精湛。換句話說，訓練這些卓越能力，是一個我們耳熟能詳的觀念。既然如此，眼睛又怎麼能排除於外？畢竟，調節或會聚都與肌肉習習相關。

視力的表現在晚上比早上差的多

眼睛有個調節區間。這個區間就是我們能夠看清楚的部位。它非常靈動，不斷改變。辛勤工作了一整天，在你還沒感覺累癱之前，很有可能親身經歷過此一現象，就是你已注意到了視力的表現在晚上比早上差的多。

當我們垂垂老矣，萬事皆易、景物全非是不可避免的。能量與耐力逐漸衰退，我們會需要更多的休息，也得把動作放緩。在40幾歲時就可以開始感受到眼睛調節能力（也就是視力）的限制。

調節能力是可以被訓練的

幸運的是，調節能力是可以被訓練的。這話之所以能夠成立，是因眼睛的聚焦系統正如同身體其他部位，是透過肌肉運作的力量所達成的。肌肉的力量與彈性皆可被改善及訓練。本書就是要教導你如何操作以改善你的視力。

如果以往的生活堪稱平衡，以致看近及望遠的能力並無差別，那你就頗有可能終生都能維持非常好的視力。在鄉下、農莊等類似場所工作的人，經常能維持良好的視力。例如，在南美洲的原始社會以及其他生活重心以打獵為主的地區，居民通常擁有卓越的視力。

當我們號稱視力為20/20時，這意味著你站在距離視力表六公尺遠的地方，可以看到八百二十七毫米高的字型。這是衡量看遠能力的指標，也稱作視敏度。有時可以藉由除式轉換成小數點來表達，因此完美的視力就是1.0。這也可以以公制來表達，完美的視力就應該是6/6或100%。此處所有的符號指標都表達了同樣的衡量尺度。

年齡漸長時 視力會自然而然的退化

多數已經存在的研究，皆環繞在視力相關的議題上。然而，有個專門研究終身「正常」視力的議題。艾略特（D. B. Elliott）等人在1995年發現，24歲者的正常視力大約在20/14。當我們年齡漸長時，視力會自然而然的退化，因此在75歲時，正常視力會落於20/19。

Your eye-protection experts are likely to sneer at this practice because of their deep-rooted belief that it is impossible to improve vision by eyesight alone. Since the industry of optometry is mainly based on sales glasses, it is not surprising that there will be such a reaction. What annoyed the optometrists was that the glasses and supermarkets had already auctioned the reading glasses, which caused their business to plummet.

Adjustment or convergence is related to muscle learning

The most popular way of speaking is that the adjustment (or convergence) of the eye cannot be learned. However, you can train golf swings or tennis serve and expect the ball to become more sophisticated. In other words, training these excellent abilities is a concept that we are familiar with. In this case, how can the eyes be excluded? After all, adjustment or convergence is related to muscle learning.

The performance of vision is much worse than the morning at night.

The eye has an adjustment interval. This section is where we can see clearly. It is very agile and constantly changing. After working hard all day, before you have not felt tired, it is very likely that you have experienced this phenomenon personally, that is, you have noticed that the performance of vision is much worse at night than in the morning.

When we hang down, everything is easy, and everything is inevitable. Energy and endurance are gradually declining, we will need more rest, and we have to slow down our movements. In the 40s, you can begin to feel the limitations of eye adjustment (that is, vision).

Adjustment ability can be trained

Fortunately, the ability to adjust can be trained. The reason why this can be established is because the focusing system of the eye is just like the rest of the body, which is achieved through the power of the muscles. Muscle strength and flexibility can be improved and trained. This book is to teach you how to improve your vision.

If the past life is balanced, so that there is no difference in the ability to see near and farsight, then you are likely to maintain very good vision for the rest of your life. People who work in the countryside, farms and other similar places often maintain good vision. For example, in the primitive societies of South America and other areas where life is centered on hunting, residents often have excellent vision.

When we call our vision 20/20, this means that you are standing six meters away from the eye chart and you can see the 827 mm high font. This is an indicator of the ability to look far, also known as visual acuity. Sometimes it can be expressed by converting the decimal to a decimal point, so the perfect vision is 1.0. This can also be expressed in metric terms, and perfect vision should be 6/6 or 100%. All symbolic indicators here express the same measure.

When age is getting longer, vision will naturally degenerate.

Most of the existing research is centered on vision-related issues. However, there is a topic devoted to lifelong "normal" vision. In 1995, D. B. Elliott and others found that the normal vision of a 24-year-old was about 20/14. As we get older, our vision will naturally degenerate, so at 75 years of age, normal vision will fall to 20/19.

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