Accurate calculation of the scientific method designed by the vision test strictly in accordance with the vision tests, is not just download an image and shoddy products. considering of the resolution and screen size of the iPad, we recommend testing at 3 meters away . Direction of "E" is randomly generated to ensure the test accuracy. Very easy to use. Commitment of without annoying AD banner forever! iPad can be used to protect your eyes now !
||Compatible with: ipadwifi, ipadwifi, ipad3g, ipad3g, ipad2wifi, ipad2wifi, ipad23g, ipad23g, ipadthirdgen, ipadthirdgen, ipadthirdgen4g, ipadthirdgen4g, ipadfourthgen, ipadfourthgen, ipadfourthgen4g, ipadfourthgen4g, ipadmini, ipadmini, ipadmini4g, ipadmini4g