First Of All – Don’t Panic!
You Have To Start Somewhere!
Introduction to OpticianWorks
Why People Wear Glasses & The Common Refractive Errors
Refractive Errors – Simple Myopia & Hyperopia
Explanation of the refractive errors of simple myopia & hyperopia.
Refractive Errors – Simple Myopic & Hyperopic Astigmatism
Explanation of the refractive errors of simple myopic & hyperopic astigmatism.
Refractive Errors – Compound Myopic & Hyperopic Astigmatism
Explanation of the refractive errors of compound myopic & hyperopic astigmatism.
The Math & Science Behind Eyeglass Lenses
Where Does “n” the Index of Refraction Come From?
The material a lens is made from has an index of refraction. The abbreviation for an index is n.
What is Flat Transposition & How You Do It?
Flat transposition is how we convert a prescription written in one cylinder form to another.
The Optical Cross – How You Work With It & The Lens Clock
The optical cross is a graphical representation of the powers found on a lens
Eyeglass Lens Design & Lens Materials
How Eyeglass Lenses Can Correct Poor Vision
What is an Axis & What is Astigmatism?
When a person’s cornea has two different curves on it we say that person has an astigmatism.
Examples of Lenses Correcting Refractive Errors
Learn how different lenses are used to correct different refractive errors.