8:44

How To Use The Lensmeter - Vertical Imbalance Or Prism?

15:58

Formación de Ópticos - El Sistema de Boxeo

11:07

Cómo usar el lensómetro: verificación de un par bifocal completo

23:22

Optician Training: How To Use The 30 45 60 Rule To Determine Lens Powers In Oblique Meridians

10:56

Trouble Reading With Progressive Lenses, Optical Says Everything Is Correct! Let's Talk Lens Design!