UbiVision Visual Acuity

*** Warning: only usable by opticians / optometrists! ***
The UbiVision Eyechart / Optotype App displays optotypes
to perform a subjective refraction by an optician / optometrist.
* flexible text distances from 1 to 6 meters (3 to 18 feet)
* Notation System in 20/xx or Decimal
* remotely controllable by iPhone
Optotypes shown:
* Snellen Letters
* Sloan Numbers
* Sloan Letters
* Landolts Rings
* Tumbling E's
Optotypes will display on an iPad, remotely controlled by an iPhone.
And also there is a Near Vision Test.