When is merely looking at the Quran considered worship?

"Praise be to Allah and prayers and peace be upon the Messenger of Allah and upon his family and companions.

There have been traditions from the predecessors encouraging looking at the Quran, and many scholars prefer reading from the Quran over reading from memory because it combines reading with looking at the Quran, which is an act of worship. However, for those who find their reverence and contemplation increased by reading from memory, it is better for them. Looking at the Quran is considered an act of worship when it is intentional, accompanied by reverence and contemplation."