Progressive lenses allow a person to see clearly at different viewing distances with a seamless transition between focal points. In this video, Dr. Marc Grossman, OD, LAc, holistic developmental/behavioral optometrist and licensed acupuncturist, discusses the pros and cons of progressive lenses. While progressive lenses offer flexibility and the convenience of a single pair of glasses, they can also make eye muscles work harder in order to focus. If you are doing a lot of quick shifting between focal distances (during driving, for example), progressive lenses may be appropriate, but for sustained close work, a separate pair of reading glasses is the best option. Additionally, because progressive lenses offer the ability to see clearly at varying distances in a single pair of glasses, they need to be fit very precisely or else it is possible that you will inadvertently be viewing the world through an incorrect prescription.
For more valuable information from Dr. Marc Grossman, check out his book Greater Vision: A Comprehensive Program for Physical, Emotional, and Spiritual Clarity