Retinoscope

Retinoscope

An eye doctor looks into your eye with a retinoscope.
A retinoscope is used to shine light into a patient's eye for an eye doctor to observe the reflection off the retina. The light is moved back and forth across the pupil. A retinoscope is especially useful in prescribing corrective lenses for patients who are unable to give oral feedback to the eye doctor. It is also useful for determining how well the eyes work together, or accommodate, to see clearly.

Direct Ophthalmoscope

Direct Ophthalmoscope

A direct ophthalmoscope is a hand-held instrument.

A direct ophthalmoscope is a hand-held instrument used for examining the interior structures of the eye, especially the retina. It consists of a mirror that reflects light into the eye and a central hole through which the eye is examined.

Lensometer

Lensometer

A lensometer determines the prescription of a pair of eyeglasses.

A lensometer is an instrument used to measure the power of an existing lens. An optician uses a lensometer to determine the prescription of a patient's eyeglasses.