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Retinoscopy

9. Februar 2017 - Eye, Ophthalmology

The retinoscopy is a technique used to measure the refractive power of the eye interpreting the light reflected on the retina to light it with a retinoscope. It detects irregularities in the cornea and lens.

History

Retinoscopy originated when William Bowman observed a line of shadow when examining an astigmatic eye with an ophthalmoscope. In 1873, the military doctor Cuignet began to measure the refraction ocular. In 1886 Landolt described the procedure for the use of the retinoscope. In 1926 Copeland patents the band retinoscope, an instrument used since then by optometrists and ophthalmologists. 1

Retinoscope

The retinoscope is the instrument used to determine the focus of the patient ’s eye. When the focal point of the retinoscope and eye match, the image appears as a line Retinoscope clearly focused on the pupil of the eye. It consists of a light source, a lens, a flat mirror and a concave mirror and a focusing knob to vary the distance between the bulb and the lens. 2 1

References

  1. ↑ Jump to:a b Walter D. Furlan, Javier Garcia Monreal, Laura Muñoz Escriva (2011). Fundamentals of optometry (2nd edition). Universitat de València. ISBN  9788437082875 .
  2. Back to top↑ http://www.saludvisual.info/examen-visual/pruebas-refractivas/retinoscopia-estatica/