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2010年7月10日星期六

植入式'眼睛望遠鏡'放大視野3倍被批准用於病者

植入式'眼睛望遠鏡'放大視野3倍被批准用於病者
Implantable 'eye telescope' that magnifies vision by three times approved for use in patients

By Niall Firth
Last updated at 10:07 AM on 9th July 2010

A miniature telescope that is implanted in the eye to solve sight problems has been approved for use in the US.
一部可植入眼解決視力問題的微型望遠鏡,已被批准在美國使用。
The new device is for people with an irreversible, advanced form of macular degeneration in which a blind spot develops in the central vision of both eyes.
新器件是為有一不可逆轉、高級形式黃斑病變的人仕,他們有一個盲點在雙眼的中央視力。
The telescope replaces the eye’s nature lens and can provide an image that is magnified by almost three times.
望遠鏡會取代眼部的自然鏡頭,及可以提供一被放大近3倍的圖像。

VisionCare's implantable miniature telescope balanced on a fingertip, and, right, attached to a patient's eye
VisionCare的植入式微型望遠鏡在一指尖上對比,和下面,附在病人的眼睛

The device then magnifies and projects the images onto a healthy portion of the retina.
The firm behind the telescope claims that it will help patients suffering from end-stage age-related macular degeneration (AMD), a disease which is the leading cause of vision loss in the US.
It can only be used in one eye because the other is needed for peripheral vision.
Patients who receive the telescope will need rehabilitation to help retrain their brain to merge the views from the two eyes into a single image.
It is intended for patients 75 and older with severe vision impairment caused by blind spots and clinical tests found that for 75 per cent saw an improvement in their eyesight.
The drugs watchdog, the FDA, said that the telescope’s size might mean that patients will also need a corneal transplant after the operation.
Wet AMD is caused by abnormal growth of blood vessels around the eye, and can be treated by stopping the growth of a natural protein called vascular endothelial growth factor (VEGF).

The firm behind the telescope, VisionCare, must now carry out two further studies, following up existing patients and beginning a study of 770 new patients.

Each telescope will cost $15,000.
每個望遠鏡將價值 1萬5千美元。
http://www.dailymail.co.uk/sciencetech/article-1293313/Implantable-eye-telescope-approved-FDA-use-patients.html

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