gms | German Medical Science

102. Jahrestagung der DOG

Deutsche Ophthalmologische Gesellschaft e. V.

23. bis 26.09.2004, Berlin

How accurate does the autorefractor Shure Sight work?

Meeting Abstract

  • corresponding author M. Schittkowski - Rostock University, Department of Ophthalmology, Rostock
  • S. Hucks-Sievers - Rostock University, Department of Ophthalmology, Rostock
  • E. Zachäus - Rostock University, Department of Ophthalmology, Rostock
  • R.F. Guthoff - Rostock University, Department of Ophthalmology, Rostock

Evidenzbasierte Medizin - Anspruch und Wirklichkeit. 102. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft. Berlin, 23.-26.09.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dogFR.10.01

The electronic version of this article is the complete one and can be found online at:

Published: September 22, 2004

© 2004 Schittkowski et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.




The aim of this prospective study is to investigate how accurate works the autorefractometer Shure Sight (Welch Allyn) compared with Retinomax K-plus (Nikon) and standard retinoscopy.


100 eyes were examined. Patients were initially (pupil not pharmacologically influenced) analyzed with ShureSight (Shneutral) and Retinomax (Retneutral). After standardized Cyclopentolat cycloplegia an examination followed again with both devices (Shcyclo; Retcyclo) and a retinoscopy was done (one observer).


Difference from retinoscopy in spherical values: Shneutral: mean 1±0,8dpt, max. 3dpt; Retneutral: mean 0,54±0,49dpt, max. 2,75dpt; Shcyclo: mean 0,7±0,7dpt, max. 3,5dpt; Retcyclo: mean 0,31±0,31dpt, max. 1,25dpt. Difference in cylindric values: Shneutral: mean 0,33±0,24dpt, max. 1dpt; Retneutral: mean 0,23±0,21dpt, max. 0,75dpt; Shcyclo: mean 0,38 ±0,32 dpt, max. 1,5 dpt; Retcyclo: mean 0,25±0,22dpt, max. 1dpt. Difference in spheric equivalent: Shneutral: mean 1,01±0,82dpt, max. 3,12dpt; Retneutral: mean 0,54±0,47dpt, max. 2,38dpt; Shcyclo: mean 0,71±0,75dpt, max. 3,63dpt; Retcyclo: mean 0,4±0,31dpt, max. 1,38dpt.


Retinomax accuracy is as good as good as shown in former studies, in our experience higher in cycloplegia than with neutral pupil. Shure Sight had some deficits in detecting the right spherical values. It might be usefull for screening small children because of the 35cm observing distance. For a precise refraction a retinoscopy under cycloplegic conditions is still necessary.