加個配備還可以驗光。（影片全長 1:35）
『 a system for prescribing eyeglasses that only requires a smartphone and a simple plastic lens attachment that costs around $2.』
『we might be able to distribute this very cheap clip-on eyepiece and give away our software for free so that many NGO’s can use our device for doing eye tests. The glasses can be delivered later on or......』
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