IJCRR - 5(13), July, 2013
CORRELATION BETWEEN REFRACTIVE ERROR AND EYE MOVEMENT PATTERNS DURING READING
Author: Noor-Suhailly Saiman, Ai-Hong Chen
Purpose: The purpose of this study was to investigate the correlation between refractive error and eye movement patterns. Methods: Fifty young adults aged between 19 and 27 years were recruited. The refractive errors ranged between +0.50D and -6.0D (mean = -1.77D, standard deviation = ± 1.97). Subjects were required to read the 200-word text at 40 cm on a reading stand while the eye movement was recorded using video oculography (VOG). Results: There was no association between refractive error and total count of saccades during reading (Spearman correlation coefficient, r = -0.2, p > 0.05). There was anegligible correlation between refractive error and total count of fixations during reading (Spearman correlation coefficient, r = -0.3, p = 0.051).However, a moderate negative correlation was found (Spearman correlation coefficient, r = -0.5, p<0.05) between refractive error andtotal count of regressions during reading. Conclusion: Eye movement patterns in term of the total count of the saccade and fixation remained relatively stable between the refractive range of +0.50 to -6.0 D. However, the total count of regression type of eye movement pattern decreased with increasing refractive error. This might imply that subjects with more myopic refractive power might be a better reader.
Keywords: Refractive error, eye movement patterns, video oculography
Noor-Suhailly Saiman, Ai-Hong Chen. CORRELATION BETWEEN REFRACTIVE ERROR AND EYE MOVEMENT PATTERNS DURING READING International Journal of Current Research and Review. 5(13), July, 19-24
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