PMID: 4022649Jan 1, 1985Paper

The effect of illumination and foveal fusion lock on clinical fixation disparity measurements with the Sheedy Disparometer

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
C F Wildsoet, K D Cameron

Abstract

The Sheedy Disparometer is a clinical instrument designed to measure fixation disparity and hence determine forced vergence--fixation disparity curves. The target design includes a central 1.5 degrees fusion-free area. The effect of introducing a central fixation target to the instrument is investigated along with the influence of ambient illumination level on fixation disparity. All curve parameters, i.e. curve type, slope, X- and Y-intercepts were found to significantly alter with the introduction of a foveal lock. Illumination changes did not cause significant differences in any parameter.

References

Aug 1, 1977·American Journal of Optometry and Physiological Optics·R P Rutstein
Oct 1, 1978·American Journal of Optometry and Physiological Optics·J E Sheedy, J J Saladin
Nov 1, 1978·American Journal of Optometry and Physiological Optics·J J Saladin, J E Sheedy
Jul 1, 1975·American Journal of Optometry and Physiological Optics·J E Sheedy, J J Saladin
Jan 1, 1983·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·K M Daum
Sep 1, 1982·American Journal of Optometry and Physiological Optics·J J Saladin, J O Rick
Sep 1, 1980·American Journal of Optometry and Physiological Optics·D B Carter
Sep 1, 1980·American Journal of Optometry and Physiological Optics·J E Sheedy
Mar 1, 1964·Archives of Ophthalmology·D W BURKE, K N OGLE
Dec 1, 1964·American Journal of Optometry and Archives of American Academy of Optometry·D B CARTER
Jan 1, 1960·American Journal of Optometry and Archives of American Academy of Optometry·F W HEBBARD

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Citations

Jan 1, 1986·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·R van HaeringenK D Cameron
Jan 1, 1988·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·L D PickwellJ Hesler
Apr 26, 2011·Optometry : Journal of the American Optometric Association·Juanita D Collier, Mark Rosenfield
May 26, 1999·Vision Research·W JaschinskiB Griefahn
Jan 22, 2003·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Miriam KromeierGuntram Kommerell
Oct 3, 2015·PloS One·Volkhard SchrothWolfgang Jaschinski
Jul 6, 2000·Optometry and Vision Science : Official Publication of the American Academy of Optometry·M T Ukwade
Dec 1, 2005·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Wolfgang JaschinskiJulia Buchholz
Jun 23, 2015·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Mosaad AlhassanRalph B Chou

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