ARTICLES: ORIGINAL ARTICLEMonocular Estimate Method Retinoscopy: Central Tendency Measures and Relationship to Refractive Status and HeterophoriaTASSINARI, JOHN T. OD, FAAO, FCOVD Author Information Southern California College of Optometry, Fullerton, California Received November 24, 2000; revision received August 12, 2002. John Tassinari 1368 E. Walnut St. Pasadena, CA 91106-1528 e-mail:[email protected] Optometry and Vision Science 79(11):p 708-714, November 2002. Buy Abstract Background. Monocular estimate (estimation) method (MEM) is a widely used clinical test of accommodative response. Normative data for MEM are available based on the central tendency measures from a population of schoolchildren but not a clinical population. Also, the relationship of accommodative response to refractive status and heterophoria has been researched, but not with MEM as the determinant of the manifestation of accommodative response. Methods. A group of 211 pre-presbyopic clinical subjects were tested with MEM for purposes of comparing the central tendency measures of a clinical population to established normative data and determining whether MEM varied with refractive status or near phoria. Results. A lag of about one-third diopter was the mean MEM result for this clinical population. The median was +0.25 D. Myopia and near esophoria have a statistically significant relationship to MEM. Conclusions. The central tendency measures derived from MEM administered to this population replicate the central tendency measures found in a previous normative study. This study provides preliminary evidence that the difference between accommodative response and accommodative stimulus, as measured by MEM, may be influenced by myopia and esophoria. © 2002 American Academy of Optometry
