Semi-Visible Markings:
Kodak Concise lens markings have a "+" at the nasal and temporal sides along the 180† axis line. Approximately 3 mm below the nasal "+" you will find the "Kc" product code. Approximately 3 mm below the temporal "+" you will find the add power of the lens. These marks can be located by visually inspecting the lens. Position the lens at arm's length, preferably in front of an overhead fluorescent light. Slowly move the lens away from the edge of the light fixture while looking at the estimated location of the marks along the surface of the lens. At a given angle of light, the marks will become visible.

Removal/Remarking the Temporary Reference Marks:
The Kodak Concise lens markings may be removed by wiping the surface with alcohol, acetone, or standard lens mark removing solvents. These marks are designed to withstand all processing procedures. They provide an easy way to verify the edging accuracy and can be removed before or after tinting.

To re-mark the lens, first locate the semi-visible markings, specifically the "+" symbols engraved along the 180† axis line (See above procedure for locating the semi-visible marks). Once you have located the semi-visible marks, mark them on the lens and use the Kodak Concise verification chart for the final re-marking.

Tinting and Neutralizing:
Kodak Concise progressive lenses tint and neutralize as other RLXPlus lenses using normal materials and methods. If the temporary lens markings are removed prior to tinting, the tinted lens should be cleaned with alcohol or acetone to remove excess dye from the surfaces.

Fitting and Frame selection:
Our minimum segment height guideline is 17 mm, based on the 12mm corridor length. The measurement includes 2 mm above the reference dot where the fitting cross is marked, as well as 3mm of clear area below the full addition location. Minimum segment height values are completely Rx and frame dependent. The frame shape and patientís monocular PDs will affect this minimum segment height, which is measured from the lowest point of the frame and not the lowest point of the frame where the reading area falls. Illustration 1.0 shows that the near zone may not fall inside the frame for certain frame and monocular PD requirements.

The simplest and most accurate way to ensure that an adequate distance & near area will be enclosed within the frame is to use the attached center/sizing chart. Mark each fit point on the demonstration lenses in the frame and lay it over the center/sizing chart to verify the critical optical zones fall within the eye wire.

If a small portion of the critical optical area is outside the frame, discuss with the patient the optical compromise that will occur if this frame is used.