Enviro Testers Ophthalmic Refractometer

This Ophthalmic Refractometer has a forehead-rest adjustment of 0.63 inches, a corneal vertex distance of 0.47 inches, and a P.D. adjustment of 2.14 inches x 2.95 inches.

SKU: ETEAR-122 Category:

Technical Specification

Sphere range +16.75 D to -19.00 D  Step 0.25 D
Cylinder range 0 D to -6.00 D (0.00 to -8.00 D with additional lens of -2.00 diopters)
Cylinder axis 0 to 180, 5 steps
Cross cylinder ±0.25 D
Rotary prisms 5.0 to 20, 1 step
P.D. adjustment 2.14 in x 2.95 in (54.250 mm to 75mm)
Forehead-rest adjustment 0.63 in (16 mm)
Corneal vertex distance 0.47 in (12 mm)
Size 2.14 in x 3.89 in x 11.49 in (54.43 mm x 99 mm x 292 mm)

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