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To determine what lens material is best for you, you must first start by looking at your prescription and calculating your TOTAL POWER, for each eye.

(+/-)SPHERE   +   (+/-)CYLINDER   =   TOTAL POWER

Examples at the bottom


You are then going to choose from the chart below the best material for your Total Power, whichever eye has the highest power.

Please Note: If your Total Power number is in the middle or close to the next tier of material, for aesthetics and weight of the lens, it is always best to go with the thinner lens. Especially if you are looking at a thin frame like a MYKITA or ic! berlin. You can also always select the thinner lens if you desire the absolute best in lens technology.


EXAMPLE 1 - SINGLE VISION

Referencing the example prescription above you are going to add your SPHERE power and your CYLINDER power together for each eye. For this example:

  • Right Eye: (-2.00) plus (-1.00) equaling a -3.00 Total Power
  • Left Eye: (-2.50) plus (-1.50) equaling a -4.00 Total Power

EXAMPLE 2 - MULTIFOCAL (PROGRESSIVE)

If your prescription has a positive (+) CYLINDER power, like this example above, you are going to add the Cylinder power against the negative Sphere power.

If you have an Add Power for a progressive lens you are not going to include this number into the Total Power. Please also note that if your prescription reads "SPH" or "SPHERE" in the Cylinder section this means you do not have an astigmatism in that eye and this should be factored as a 0.00 in your formula.

For this example:

  • Right Eye: (-3.75) plus SPH (0.00) equaling a -3.75 Total Power
  • Left Eye: (-5.00) plus (+1.00) equaling a -4.00 Total Power

Please Note: There is absolutely no substitution for a great optician's assistance determining the best lenses for your prescription and frame. There are so many variables that determine what lenses will fit best in a frame, such as; your prescription, frame type, frame material, frame base curve (wrap of the frame), lens width, lens height, lens shape, how the lens mounts in the frame, what you are looking for in a lens, your lifestyle and so much more. We always recommend everyone to Contact Us with your actual prescription and the frame you desire so that we may assist you with the absolute best lenses and options for your situation.


Right Eye (O.D.)R Left Eye (O.S.)L
Sphere
Cylinder
Axis
Add
P.D.

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