December 2005
Volume 5, Issue 12
OSA Fall Vision Meeting Abstract  |   December 2005
Objective measurement of accommodation function using an autorefractometer
Author Affiliations
  • Hiroya Goto
    Navy Refractive Surgery Center
  • Corina van de Pol
    Navy Refractive Surgery Center
  • Sandor Kaupp
    Navy Refractive Surgery Center
  • Diana Lozano
    Navy Refractive Surgery Center
  • Jonathan Paul
    Navy Refractive Surgery Center
Journal of Vision December 2005, Vol.5, 63. doi:
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      Hiroya Goto, Corina van de Pol, Sandor Kaupp, Diana Lozano, Jonathan Paul; Objective measurement of accommodation function using an autorefractometer. Journal of Vision 2005;5(12):63.

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      © ARVO (1962-2015); The Authors (2016-present)

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PURPOSE: To evaluate accommodation function among refractive surgery candidates.

METHODS: Autorefraction was measured using a Speedy-K autorefractometer (Right MFG, Tokyo, Japan) in 15 corneal refractive surgery candidates (Age 21 to 38). Repeated measurements of refraction 8.5/sec for 10 sec were performed in various accommodative target distances (+0.5 to −3.0 diopters) in the Speedy-K. Accommodation functions were described as accommodation lag and high frequency component (HFC) of accommodation microfluctuation. HFC was reported as a single number ranging from 30 to 70 on the MF-1 accommodation analysis system.

RESULTS: Accommodation lag at −3.0D of accommodative demand was 1.88±0.33 diopters and had significant correlation with level of spherical equivalent refraction (R2=0.427, p=0.008). HFC reached minimum at −0.5 diopters of target distance and increased with the accommodation demand up to −3.0 diopters.

CONCLUSIONS: The preoperative spherical equivalent refraction in refractive surgery candidates can affect accommodation function and is anticipated to correlate with the symptoms of near vision disturbances immediately after refractive surgery.

Goto, H. van de Pol, C. Kaupp, S. Lozano, D. Paul, J. (2005). Objective measurement of accommodation function using an autorefractometer [Abstract]. Journal of Vision, 5(12):63, 63a,, doi:10.1167/5.12.63. [CrossRef]

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