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  Telesight Magnifiers Inc.    

 

Guide To Buying A Desk Magnifier

 



 


 

 


 







 

 
 

 

    

 

Magnifier Information 

 After the age of about forty you will experience a problem viewing small print and tasks involving close detail work. This eye condition is called presbyopia and magnification is the answer. Shop our large selection of magnifying glass for embroidery work and embroidery magnifying lamps.

 

 What type magnifier is best? Hand held magnifiers are best for short duration use and a embroidery magnifying lamp or hands free embroidery magnifier with stand are best for long duration use. 

 

Magnifier glass power and work distance: Select magnifiers with a power that will allow you to perform your task at a comfortable distance. The higher the power of the magnifier the shorter the focal range(work distance) and the smaller the field of view. The high power magnifier may not be the best magnifier for you. Our large magnifier selection can help

those with presbyopia  and macular degeneration

.

Field Of View: The size of the area being magnified when viewing through a magnifying lens. The higher the power of the  magnifier the smaller the field of view.

 

Diopter: Diopter is a measurement that is used to calculate the power of a magnifying lens. The higher diopter will provide higher magnification. Diopter is expressed as "D"

Power: Power is how large an object or print increases as you look through a lens. Magnifying power is expressed as "X"

 

Focal Length: 

 Measurement from the center of the lens to to the object and be in focus

. 

Focal Range:

The distance from

 the magnifying lens to the object being viewed.

 

Fresnel Magnifier: A flat magnifier consisting of concentric circles that can be a full page reading magnifier.

 

Visual impairment (or vision impairment) is a decreased ability to see to a degree that causes problems not fixable by usual means, such as glasses or medication. Our low vision magnifiers can be of help. 

 

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.