Clip On Magnifiers Magnifying Glasses Buying Guide

As you enter middle age your near vision changes and reading becomes more difficult and causes eye strain. This condition is called presbyopia and a magnifier will make reading a book or crafts more enjoyable. Other eye problems that a magnifying glass will be helpful are low vision, macular degeneration, cataract and glaucoma.   

Diopter: Diopter is a measurement that is used to calculate the power of a magnifying lens. It will appear as "D" .

Power: Power is how large an object or print increases as you look through a lens. It appears has "X"

Focal Length:  Measurement from the center of the lens to the object and stay in focus.                            

Rules Of Magnification.  

• The higher the power of the lens the closer you must get to the object being viewed and the smaller the field of view.

• As the power of a lens increases, the diameter of the lens decreases.

• Diopter is a term used to determine the power(magnification)of a lens. The terms are sometimes confused.

• High power magnifiers such as 8x must be held steady or else they will be out of focus.