![]() ![]() However, to block out “blue” light, which causes concern for macular degeneration and other eye conditions, sunglasses must have some yellow in them. Most sunglasses now block out ultraviolet light. Absorptive sunglasses help filter out bothersome glare and harmful light rays. Glare is a major problem and concern for many persons with low vision. They provide better posture and ergonomics, which leads to less fatigue and strain on your neck and back. ![]() They allow better illumination because you are not as bent over, which can block out the reading light.They help you see a wider field of view, or more lines and text at a time because the image is closer to your eye.They bring reading and writing materials closer to your eye, thus helping to achieve “relative distance” magnification: enlarging letters and words by bringing them closer.Using a reading stand when you read or write with a flexible-arm task lamp and your stand magnifier or other optical devices will increase your success dramatically. Reading stands can help with both reading and writing by allowing you to position your reading and writing materials more effectively. Bring the lamp closer to help maximize the light delivered to the task and your eye.įor more information about helpful lighting for reading, view Positioning a Light Source and Minimizing Glare. Perhaps even more important than the type of light is the position of the light-particularly the distance from the lamp to the task you are doing or to your eye. Try to choose a low “Kelvin” rating – under 5,000 Kelvin (K) – so that it does not emit ultraviolet or blue light. Try different lamps to see what you prefer. There are many types of lamps: incandescent, halogen, fluorescent, LED, and full spectrum. Be careful to position the light so that it does not shine directly into your eye and creates glare.Some lamps may become very hot, so be careful not to touch them.Some disadvantages of flexible-arm task lamps are: They can be adjusted to a variety of settings and tasks.They are obtained easily at a variety of stores, catalogs, or online.Some advantages of flexible-arm task lamps are: Therefore, flexible-arm desk or floor task lamps are perhaps the most helpful and important non-optical devices for many people. And importantly, a person with low vision may need three times as much light to read as a person their age who does not have a vision loss. As we age, a person age 65 or older probably needs 15 times as much light to read as does a 10-year-old. Proper lighting is critical for good vision. Understand the potential and limitations of the device.Understand how to maximize the use of the device.Be confident that the device has been appropriately prescribed.Be motivated to use the device for specific tasks.They can be used in combination with magnifiers and other low vision optical devices that can help with reading and a variety of tasks.īefore any optical or non-optical device can be effective and comfortable, you will need to: They are often recommended as part of a low vision examination. Low-vision non-optical devices can include a number of adaptations, such as reading stands, supplemental lighting, absorptive sunglasses, typoscopes, and tactile locator dots. Helpful Non-Optical Devices for Low Vision ![]()
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