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Date Posted: 20:38:43 06/16/03 Mon
Author: Steve Leung
Subject: Re: 眼睛屈光狀態 (refractive status),受環境影響、支配,並會追隨加予眼前的鏡片焦距特性Z異。
In reply to: Steve Leung 's message, "Re: 眼睛屈光狀態 (refractive status),受環境影響、支配,並會追隨加予眼前的鏡片焦距特性Z異。" on 04:21:40 06/13/03 Fri

>>你認為眼睛生來是近視、遠視、散光嗎?若認同的,可無需深入了解它的焦距、屈光狀態發展Z化,因一切是既定的,無需費心、傷神討論研究。

>若不認同,可一起努力探討眼睛焦距變化,它受環境影響,
>眼睛是一全自動相機,任何距離均可調校清晰,若過
>份調校至過近或過短距離,那眼睛就可能開始進入近視邊緣。
既然受環境影晌,它的屈光狀態是可改變致改善的!
>
>Here is an excellent reaearch report from Cornell
>University, Ithaca, New York by neurologist Dr. Howard
>Howland about the shift of refractive focal status of
>chickens in respond to external applied lens. Highly
>recomended
>
>http://howlandlab.bio.cornell.edu/
>files/Reprints.pdf/Reprint070.pdf
>"Accommodation,Refractive Error and Eye growth in
>Chickens"


Dr. Howward Holland, Dr. Frank Schaeffel and Dr. Adrian Glasser wanted to find out the effects of plus lenses and minus lenses on normal eyes in 1988.

They took five chickens and put plus lenses on them. Another five chickens were equipped with minus lenses. Yet a third group had a plus lens on one eye and a minus lens onthe other eye. A control group was maintained for standard scientific protocol.

RESULTS:
* All eyes treated with plus lenses became consistently more positive (Hyperopic).
* Minus lenses produced more negative (myopic) refractions (focal states ) in all eyes.
* In a test of plus/minus lenses on left/right eyes, the eye with the plus lens moved in a positive direction. The eye with a minus lens moved in a negative direction.
* The control group did not change significantly in any direction.

CONCLUSION and INTERPRETATION:
Focal properties of lenses do profoundly affect the focal state of the young developing eye.
Translated into human terms, the minus lens caused nearsightedness, and the plus lens restored clear distant vision.

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