Eye examination instruments are often bulky and expensive, making them difficult for ordinary people to own. This iPhone accessory, designed by researchers at Stanford University and expected to cost less than $90, is small and lightweight. It only needs to be installed on the camera on the back of the iPhone. The two adapters it comes with can take close-ups of eyeballs, retinas, etc. The pictures can be sent to relevant ophthalmologists to analyze whether the eyes are healthy. 【Click here for more information】
