Narrowing an acetate, TR-90 or plastic frame.

Narrowing a metal frame.

Re-inserting the lens into a semi-rimless frame.

Re-inserting the lens into a full rim acetate, TR-90 or plastic frame.

Fixing broken acetate frames.

Differentiating between acetate and plastic/TR-90 (injection molded materials)

Straightening a crooked acetate, TR-90 or plastic frame.

Straightening an uneven metal frame.

Straightening a crooked nose pad.

The do's and don'ts of adjusting screws.

Screwing a temple back onto your glasses.

Single vision glasses explained.

Stock lenses explained.

Optimo plus lenses explained.

Fully personalized glasses explained.

Bifocals explained.

Progressive lenses explained.

Spherical vs. aspheric lenses.

Different types of sunglasses explained.

Lens indexes explained.

Lenses appropriate for rimless frames.

Different types of progressive lenses.

Long vs. short corridors

Importance of shatter resistance for sports/youth.

Adnuo® vs. Transitions® VI lenses.

Transitions® VI vs. Transitions® XTRActive lenses.

Nupolar® lenses explained.

Drivewear® lenses explained.

Myopic vision explained.

Internal view of a myopic eye.

Hyperopic vision explained.

Internal view of a hyperopic eye.

Astigmatic vision explained.

Internal view of an astigmatic eye.

Cylinder to correct astigmatism explained.

Prismatic correction explained.

Measurement "diopter" explained.

20/20 vision explained.

Abbe value explained.

Calculating lens power.

The bait and switch of optical shops exposed.

Optical supply chain explained.