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 [Read More]
News
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 [Read More]
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 [Read More]
"Dear Doctor"
A plea from a patient who thought nothing could be done. Dear Doctor, You treat patients with low vision and serve us well. Often, however, we hear “nothing can be done for you”. It’s true, but it hurts. With no additional aid, we soon realize that it is beyond our capabilities to win the battle [Read More]
Your Spectacle Prescription Explained
This information will help you decipher those numbers and abbreviations on your spectacle prescription. It is also available as part of an audiovisual presentation, “All About Eyeglasses”. A spectacle lens tries to focus a clear image onto the retina. The doctor’s prescription is due mainly to the shape of your cornea. If you are only [Read More]