EYE Wear Consultant Interview Questions and Answers

The Abbe value is a measure of the amount of chromatic aberration in a lens material.

• The Abbe value is a numerical value that indicates how much a lens material disperses different wavelengths of light.

• Higher Abbe values indicate less chromatic aberration and better image quality.

• For example, crown glass has an Abbe value of around 60, while high-index materials can have Abbe values as low as 30.

High index lenses may be more expensive and can cause more chromatic aberration.

• High index lenses are typically more expensive than standard lenses.

• High index lenses can cause more chromatic aberration, leading to color fringing around objects.

• High index lenses may not be as impact-resistant as standard lenses.

• High index lenses may not be suitable for all frame styles due to their thickness.