Saturday, January 11, 2014

Cermin Mata Ajaib?

Kalau yang ada word ajaib ke.. magic ke.. ramai yang suka
Ramai yang percaya
Ramai yang terpengaruh..

Pernah nampak alat ni?

In english they will say this as 'therapy eye wear'. Bila terjemah bahasa melayu, jadi cermin mata ajaib..

Come on... terjemah la elok2 sikit.. mana ada cermin, kan plastik je tu.

Bila di klinik ramai makcik pakcik yang tanya aku.. (biasa makcik pakcik ni either rabun tua or cataract), doc, kalau pakai cermin mata yang lubang2 tu boleh terang balik ya?


Teori cermin mata ni dah lama dah, dimulakan oleh eye-care physician dahulu yang rasa teori yang dibelajar and dipraktis selama ni salah, maka dia keluarkan teori baru, William Horatio Bates .

Idea utama bates adalah dengan proses relaxkan mata, jangan strain, nanti mata akan jadi lebih terang dan lebih nampak.

Cermin mata ni menggunakan konsep asas dalam bidang kedoktoran mata, dimana jika lajur kecil cahaya ( narrow beam of light) difokuskan kepada retina (mata), maka kurang 'circle of confusion' (perkara yang berlaku dalam rabun silau) dan meningkatkan 'depth of field' menyebabkan mata nampak lebih jelas. Ini dapat betulkan rabun sehingga 4 dioptre (400 kalau bahasa biasanya).

TAPI..... NI SEMENTARA JER!!!!

Kerana masalah rabun kebanyakannya disebabkan keadaan mata yang tak normal ( terlalu banyak untuk listkan disini). Pemakaian alat ni tak membantu dalam jangka masa panjang.

Teori ini mempunyai pengikutnya yang tersendiri, sebab itu masih bertahan hingga ke hari ini. Tambahan pula pengasas teori ni seorang doktor mata. Pelbagai perdebatan dan kupasan telah dilakukan dalam bidang kedoktoran mata sebelum idea ini ditolak.


Boleh baca kisah Mr Aldous mengenai Bates Method:


Perhaps the most famous proponent of the Bates method was the British writer Aldous Huxley. At the age of sixteen Huxley had an attack of keratitis, which, after an 18-month period of near-blindness, left him with one eye just capable of light perception and the other with an unaided Snellen fraction of 10/200. This was mainly due to opacities in both corneas, complicated by hyperopia and astigmatism. He was able to read only if he wore thick glasses and dilated his better pupil with atropine, to allow that eye to see around an opacity in the center of the cornea.[27]
In 1939, at the age of 45 and with eyesight which continued to deteriorate, he happened to hear of the Bates method and sought the help of Margaret Corbett, who gave him regular lessons.[27] Three years later he wrote The Art of Seeing, in which he related: "Within a couple of months I was reading without spectacles and, what was better still, without strain and fatigue... At the present time, my vision, though very far from normal, is about twice as good as it used to be when I wore spectacles".[28] Describing the process, Huxley wrote that "Vision is not won by making an effort to get it: it comes to those who have learned to put their minds and eyes into a state of alert passivity, of dynamic relaxation." He expressed indifference regarding the veracity of Bates' explanation of how the eye focuses, stating that "my concern is not with the anatomical mechanism of accommodation, but with the art of seeing".[2]
His case generated wide publicity as well as scrutiny. Ophthalmologist Walter B. Lancaster, for example, suggested in 1944 that Huxley had "learned how to use what he has to better advantage" by training the "cerebral part of seeing", rather than actually improving the quality of the image on the retina.[2]
In 1952, ten years after writing The Art of Seeing, Huxley spoke at a Hollywood banquet, wearing no glasses and, according to Bennett Cerf, apparently reading his paper from the lectern without difficulty. In Cerf's words:
Then suddenly he faltered—and the disturbing truth became obvious. He wasn't reading his address at all. He had learned it by heart. To refresh his memory he brought the paper closer and closer to his eyes. When it was only an inch or so away he still couldn't read it, and had to fish for a magnifying glass in his pocket to make the typing visible to him. It was an agonizing moment.[1]
In response to this, Huxley wrote "I often do use magnifying glasses where conditions of light are bad, and have never claimed to be able to read except under very good conditions."[29] This underscored that he had not regained anything close to normal vision, and in fact never claimed that he had
Source: wikipedia

Kalau nak baca lebih detail boleh la baca kupasan di sini: William Horatio Bates

My advise:
Penggunaan alat ni membantu sementara sahaja.. bukan pemulihan kekal .
Penggunaan alat ni menyebabkan medan penglihatan tidak clear banding pakai cermin mata biasa, bahaya jika guna semasa memandu atau mengendalikan mesin.


Berjumpa dengan doktor pakar mata untuk memeriksa mata dan mengetahui punca masalah mata sebelum membuat keputusan.

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