Optician Training: Prism Concepts Part 1
9:21
Optician Training: Prism Concepts Part 2
12:43
Optician Training: What Is Prism?
21:58
Which Progressive Lens Is The Best?
16:40
Optician Training: Prentice's Formula (Rule) Part 1
19:06
Understanding Frame Fit: A Basic Guide
32:38
«Le job de Trump va être de gérer la défaite américaine face aux Russes», cingle Emmanuel Todd
5:26
How Prisms Help With Esotropia and Exotropia
26:26