VSP is the most popular vision insurance company in the nation, and, because of that, its coverage is easy to use. Around 137,000 eye doctors and offices take VSP insurance, including 41,000 retail ...

The abbreviations, numbers, and plus (+) or minus (-) signs on your eye prescription have different meanings depending on how well you see. They can also change as you age. Here’s what they mean. The ...

Positive numbers on an eye prescription indicate they are correcting farsightedness, while negative numbers correct shortsightedness. A larger number suggests a stronger prescription. Although roughly ...