Sight Reading -- the ability to play a piece of music by reading it for the first time and without practice -- is one of the most crucial keys of longevity, or the ability to continually enjoy and be enriched by music, long after lessons are finished.
What Does a Pianist See? | Eye Tracking
This video uses eye-tracking glasses to compare a professional's sight reading with a student's. They are very different!
7 Tips to Better Sight Reading
The tip that I'd like you to especially pay attention is to "chunking" or taking large groups of notes and thinking of them as one unit. For example, CEGEGECEGEC is really just a giant "C Major"!