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This Large Aperture Maddox Phoria Measure offers a quick method for the measurement of phoria imbalances. Compared to Maddox Phoria Measures previously available, this new product from Good-Lite employs a 48 mm prism rather than the traditional 25 mm prism in order to make it easier to use with children, Low Vision patients and others who may be visually impaired.
- Viewing Area is 190% larger (48 mm prism vs 25 mm)
- Calibrated with Ohio State Diopter Rule
- Disassembles for easy cleaning
- Supports both Horizontal and Vertical Phoria measure