Retinoscope head ri-scope (spot) XL 3.5V Riester
- It 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.
Two models retinoscope head are available:
- The spot-light retinoscope projects a circular light beam.
- 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.
- Simple operation with knurled thumb screw. The line and spot image can be focussed with the operating element and turned 360º, angle can be read off the integrated scale.
Riester. Germany.
Brand
Symbol
10546
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