AUTOMATIC ADJUSTMENT OF FONT ON A VISUAL DISPLAY

1 . A system comprising:

a vision properties module to access data stored in a vision record describing one or more vision states of a user of a mobile device;

a distance module to determine a distance between the user and the mobile device; and

a display modification module to, using one or more processors, modify a visual display of the user interface based on a current vision state of the one or more vision states of the user and the distance.

2 . The system of claim 1 , wherein the vision state of the user is based on an eyeglass prescription prescribed to the user.

3 . The system of claim 1 , wherein the current vision state of the user is affected by presbyopia.

4 . The system of claim 1 , wherein the current vision state of the user is affected by myopia.

5 . The system of claim 1 , wherein the vision properties module is further to determine the current vision state.

6 . The system of claim 1 , wherein the vision properties module is further to augment the vision record based on the user's viewing habits or preferences.

7 . The system of claim 1 , wherein the vision properties module is further to provide an alert interface to receive a selection of the current vision state.

8 . The system of claim 1 , wherein the vision properties module is further to determine the current vision state by identifying glasses worn by the user.

9 . The system of claim 1 , wherein the vision properties module is further to determine the current vision state based on habits of the user.

10 . The system of claim 1 , wherein the distance module is to determine the distance using an infrared sensor of the mobile device.

11 . The system of claim 1 , wherein the distance module is to determine the distance based on a relative size of a facial feature from an image captured by a camera of the mobile device.

12 . The system of claim 1 , further comprising a motion module to measure movement of the mobile device relative to a previous position using an internal accelerometer.

13 . The system of claim 1 , wherein the display modification module is to modify the visual display of the user interface by increasing a font size to a predetermined level.

14 . The system of claim 13 , wherein the predetermined level is based in part on movement of the mobile device.

15 . The system of claim 1 , wherein the display modification module is to modify the visual display of the user interface by exhibiting the properties of a lens.

16 . The system of claim 1 , wherein the lens is concave.

17 . The system of claim 1 , wherein the lens is convex.

18 . The system of claim 1 , wherein the display modification module is to modify the visual display of the user interface based on color-blindness of the user.

19 . A method comprising:

accessing data stored in a vision record describing one or more vision states of a user of a mobile device;

determining a distance between the user and the mobile device; and

using one or more processors, modifying a visual display of the user interface based on a current vision state of the one or more vision states of the user and the distance.

20 . A non-transitory computer-readable medium having instructions embodied thereon, the instructions executable by one or more processors to perform a method comprising:

accessing data stored in a vision record describing one or more vision states of a user of a mobile device;

determining a distance between the user and the mobile device; and

modifying a visual display of the user interface based on a current vision state of the one or more vision states of the user and the distance.