Certified Ophthalmic Assistant Practice Exam

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Retinoscopy is an example of what type of refractometry?

passive
subjective
active
objective

The correct answer is: objective

Retinoscopy is an example of objective refractometry. Objective refractometry techniques do not require any input or feedback from the patient, and the results are obtained solely based on the optical principles of the eye. In retinoscopy, the ophthalmic assistant uses a retinoscope to shine a light into the patient's eye and observes the reflex or movement of light within the eye to determine the refractive error. This method provides an objective measurement of the patient's refractive error without relying on the patient's responses. In contrast, subjective refractometry, which is not the case in retinoscopy, involves the patient's feedback and responses to determine the refractive error, making it a different approach from objective refractometry.