Recognizing Cataract

Watch for Vision Changes as You Age As life goes on, we all start to notice certain changes that are a natural part of aging. Maybe our joints aren’t as flexible as before, or our hearing just isn’t what it used to be. Our vision, too, may be less sharp than it once was. One [Read More]

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 [Read More]

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]

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]