iCare Eye Test Pro could test your vision and color blindness by mobile. After the measurement, you can also do training to protect your eyes better. Eye Test Functions: > Visual Acuity Test> Color Blind Test> Contrast Sensitivity Test> Astigmatism test> Red Desaturation TestEye Traing Functions: > Visual Acuity Test> Close eyes> Close and move> Random move> Move left and right> Move up and down> Circle focus> Blink> Two objectsOther Functions: > Data management and analysis> Improve vision diet> Improve vision videoEASY TO USE: Keep the mobile phone in front of you at 40 cm, choose the direction of "E"NOTE: Because we have high requirements on the phone's screen, phones are advised to at least 800X480, screen at least 3.5 inchesReliable data: 1. Deviation of vision value: 0.2 Within2. Color blindness and color weakness are basically accurate.