Merga Steel

$ 125.00

This steel is on another level. So comfortable and sleek you'll want to wear it every second.

Color: Silver Merga Steel

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Pupillary Distance

If your PD consists of one number, also known as "Single PD", this is the pupillary distance between your pupils. This is typically your distance PD measurement, unless it is noted as a near/reading PD. The distance PD is usually between 40-80mm. You can also calculate near PD, used for reading glasses, by subtracting 3mm from your distance PD.

Learn how to measure, as well as understand the differences between single, dual and near PD by checking out our PD infographic and How-To-Video.

If your PD consists of two numbers, also known as "Dual PD", this is the pupillary distance between the centers of each pupil to the bridge of the nose. It is written in the following notation: 32/30. The first number is the right eye, and second is the left eye. Both are less than 40.

Pupillary Distance (PD), the distance between the centers of your pupils, determines where you look through the lens of your glasses. It should be as accurate as possible. The average adult's single PD is between 54-74 mm; kids' are between 43-58 mm.

Learn how to measure, as well as understand the differences between single, dual and near PD by checking out our PD infographicand How-To-Video.

When do I enter `dual PD?

If your prescription has 2 numbers for your PD (also known as “dual PD”), please make sure to enter both of these numbers in correctly. Because our eyes are not perfectly symmetrical, an accurate dual PD measurement allows us to position each lens directly in your line of sight for maximum visual clarity.