The formula also reduces the ROD of the lens, which is the main source of “Does Blurred Vision Really Work” in the Vision RX20? A little feed for those who think natural vision improvement is stupid! In fact, many people see the first results within a few days, and some restore their normal vision in less time than is needed to recover from LASIK. Do not examine distant objects when you are not concentrating on the computer. The courses I used are called “Rebuild Your Vision” and are perhaps the most popular course on the Internet. There are many ways to find performance PED results. Make sure you get a duplicate blood test.