10 reasons why Virtual Retina Contact Lenses would be awesome

1  You wouldn't even notice throughout the whole day that you 

    wearing a device - what makes it officially a brain interface

2  Power consumption would be super low - compared to 

    a 100 Watt TV the lenses would only consume sth like

    100 microWatts. Thats a million times less.

3  AR/VR will be everywhere as long as you carry a mobile

    computing device with a potent battery

4  As they incorporate relatively few electronic components

    and weigh as little as 100milligramm they could in theory

    be very cheap 

5   You could wear them while playing a new fancy AR sports

     game outdoors

6   Virtual illusion is perfect since you don't notice

      anything of a headset 

7   They could  scan your retina for pathogenic abnormalities

     as part of early diagnosis

8   Your brain will receive visual input even if you close 

      your eyes! 

9   If you have a bad sleep they could calm you by projecting
     anti-bad-sleep hypnosis

10  Education will be awesome again!