For someone like me who hates being charged $50 to look through a refractor for 15 seconds, this will come in quite handy. I suppose if you’ve already been prescribed it’s rather useless, but for those in developing countries where proper optometry equipment comes at a very hefty premium, MIT’s latest project could be a nice, cheap addition to your poor, vision-improving practice.
They’ve developed an app that allows the user to manipulate a set of lines and dots while looking through a $2 “eye” that was made from the parts and technology of a holographic barcode scanning device. Simply continue to adjust the image until everything comes into perfect focus, and BAM! You’re given a prescription and sent along your merry way to your favorite eye store. Pretty cool, and I wouldn’t mind having one of these for my own personal use.