This kit replaces the retracting measuring cord for the RAM Prime, RAM Prime XL, and RAM ETDRS Comes with Allen tool and nut/bolt. Easy to install. Specify 8 inch.
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NEWS
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Free Shipping USA over $500.00.
New: Clinical Experiment
See Poster at ARVO,
May 3-7, 2026
Press Release 1/15/2026
1st Relative FOVEAL Adaptation
Diagnose Macular Disease
on iPhone
100 years after Hecth's first test.
Watch Fovea Video / Test Yourself
Learn the MacHealth Test
Patent MacDx
Purchase at AMA Optics
Panoramic Pinhole
RAM Solo
RAM Prime XL
Spot & Flood Lights
RAM Chip-Lens
MacHealth
MacDx
DiagnosticGame App
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