頭痛惡心眼脹 近距離看3D片後果慘烈

In one experiment, researchers at Eindhoven University in the Netherlands asked 39 people who could see 3D to read some text on a screen from 10 feet away. Seven of the group suffered symptoms that can lead to nausea, including double vision and eye strain, this week’s New Scientist reports. Earlier this year The Royal College of Opthalmologists, Association of Optometrists and opticians said more research was needed in to the long term effects of 3D TV, but conceded short term effects were visible.

來自Eindhoven 大學的研究員針對39名近距離觀看3D的觀衆做調查，有7人感到不適，表現症狀爲：嘔吐、視力重影、以及眼疲勞等，有關數據發表在週刊《新科學家》上。雖然眼科專家稱，該實驗還需要深入，並研究3D技術對於人體“長期”的作用，然而這項技術導致人體在“短期內”不適已經是顯而易見的了。

Viewers will have a choice between two types of 3D television types known as 'active' and 'passive', which show images in different ways. An 'active' television will cost less, but will require special 'shutter' glasses. The basic idea is that the TV displays the programme in a series of rapidly alternating frames - left eye, right eye, left eye, right eye - changing at such speed that the viewer cannot even detect it is happening.

如今，3D電視有兩種，分“主動式”和“被動式”技術。主動式3D技術必須得搭配特製3D眼鏡“shutter”方能觀看，市場上該眼鏡的售價爲50英鎊，眼鏡自帶電池。人們戴上眼鏡才能享受3D效果，所以稱之爲主動式3D。

The passive technology relies on a special polarising filter on the TV set to split the image into its left eye/right eye components. The split picture is then viewed using a simple pair of polarising glasses - similar to the ones handed out in modern 3D cinemas - to create the 3D image.

相反，被動式技術無需特製3D眼鏡，利用安裝在電視上的“偏振光分束器”技術，自動分離圖像。而觀衆只用配戴在電影院內分發的普通立體眼鏡觀看即可。

John Lee, President of The Royal College of Ophthalmologists, said in a recent interview: ‘You cannot damage your eyes by watching [in 3D], but if you spend an excessive period of time doing so, you may get a slight headache because of eye strain.’Experts do not recommend allowing children under eight to regularly use 3D glasses because their eye muscles are still developing.

專家警告，長時間觀看3D電視有害健康，視疲勞明顯。此外，專家不建議幼童（8歲下）觀看，因爲他們的眼部肌肉尚在發育過程中。