Chadwick Size Scope

Our Chadwick Size Scope can measure binocular size imbalance using in-office trial rings.



Using the principles of the Galilean telescope, Chadwick designed a 3-D printed holder to create size lens equivalents using in-office trial rings.

While they are not perfectly afocal, patients and doctors will appreciate their ability to measure binocular size imbalance.

Objective Ocular Approximate Magnification
+3.50 -3.62 3.5
+5.00 -5.25 5
+7.00 -7.50 7
+10.00 -11.00 10

Check out our AMAZING Aniseikonia Calculator to save you some work!