Clip On Magnifiers Magnifying Glasses

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.