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Covidien Nellcor: N-10
Research studies for standardized vision testing
reducing operational costs
Gauge Range:
Full Metal EP 253 Schematic Eye (Used) Exam Chair Covidien Nellcor: N-10Full Metal EP 253 Schematic Eye is designed to help students acquire the skill of performing retinoscopy, and instructors a means to evaluate that skill. The back of the Full Metal EP 253 Schematic Eye can be adjusted from +3 to 4. 5 to simulate different refractive errors. Hypermetropia (farsightedness) is created with the eye set to + values while myopia (nearsightedness) will result with values. This range can be extended by placing a 38mm diameter
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