New addons for visual performance

Guys, We just posted a new addon for tracking visual function. The most important parameters related with the psychophysics of vision (e.g. visual acuity and contrast sensitivity) are tracked in order to detect changes in time. The flow of your visual function is upload to a cloud where you can follow it. Any critics and suggestion are very welcome. I hope you enjoy.

https://addons.mozilla.org/en-US/firefox/addon/ziamed-spy/