Visual Field Grid

  • July 12, 2013

    Visual Field Grid

    The Visual Field Grid was designed to allow you to map the scotomas (blind spots) in your central vision. It is easy to do, and it can be used to either monitor your own own progress or to explain your vision to others. To map your visual field, print this page and follow the steps […]

  • Snellen Chart

  • July 12, 2013

    Snellen Chart

    This is the same chart that your doctor uses to determine your visual acuity. The normal height for the letter A is 88 mm, and the viewing distance is 6 meters. To properly view the chart on your monitor: Measure the height of the letter A in millimeters Divide by 88 Multiply by 6 The […]

  • Amsler Grid

  • July 12, 2013

    Amsler Grid

    The purpose of the Amsler Grid is to identify distortion in your visual field. To accomplish it, sit approximately 18 inches from your monitor screen and close either eye. Stare at the center of the grid, and observe the surrounding area peripherally. If any lines are distorted (“bent”), this is evidence of swelling of your […]