New progressive lens wearer. Age 44.

Refractive error

Sphere Cylinder Axis Add PD
OD -0.75 -0.25 90 1.50 31
OS +1.00 1.50 32

Motor fusion limits @ 6 m

1.5 1.5 2.5 10

Frame data

Eye DBL Wrap Vertex Height
54 16 3 11 20

This patient had never worn glasses before. Her primary complaint was blurred vision in distance and near gazes. She didn’t want two pairs of glasses so opted for progressive lenses. This type of patient typically has issues adapting to progressive lenses due to the dynamic aniseikonia. Her fusional tolerance indicates potential for non-adaptation to glasses. With the SHAW lens modelling software, the optometrist was able to determine the optimal solution. In addition, the SHAW lens software customizes corridor length to a preferred end point calculated with the exact position of wear and magnification effects of the spectacles. In this case, after instruction on how to use progressive lenses, the patient was happy with her new glasses and had no adaptation issues.

Conventional lens

SHAW lens

Of particular interest in this case is the improvement of both lateral and vertical components of the induced dynamic aniseikonia. Also note how induced prism in the reading zone is dramatically less than what the patient would experience with all other designs.