The retinoscope measures the refractive power of the eye. Errors of refraction, such as in short and long-sightedness, as well as astigmatism can be recognised and determined.
Choice of XL 3.5 V xenon lamp or HL 2.5 V halogen lamp.
Two models are available:
The slit-light retinoscope with a light beam in the form of a line, simplifies recognition and the determination of astigmatic refractive errors. The reflex in the form of a line is moved vertically to the axis across the pupils of the patient with a slight oscillating movement. The shadow moves in the same or opposite direction.
Co-movement (plus lines): The patient is long-sighted. Counter-movement (minus lines): The patient is short-sighted.