Open AccessMultiple measures of refractive state of a test eye making use of a Nidek ARK-10000 OPD-scan
Author(s) -
W.D.H. Gillan
Publication year - 2006
Publication title -
african vision and eye health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.186
H-Index - 5
eISSN - 2413-3183
pISSN - 2410-1516
DOI - 10.4102/aveh.v65i4.269
Subject(s) - optometry , measure (data warehouse) , optics , ophthalmology , mathematics , medicine , computer science , physics , database
It is important for the users of automated instruments that measure refractive state to know that the results obtained from such instruments are accurate and repeatable. This study was conducted to investigate the repeat-ability of multiple measures of refractive state using a Nidek ARK-10000 OPD-scan.Method: 150 measurements of refractive state of a test eye were obtained using an OPD- scan. The method of focusing and triggering the instrument was varied for three sets of 50 measurements.Results: The results of this study suggest that the OPD-scan gives reliable and accurate measures of refractive state when taking mul-tiple measurements. Although the means of the various sets of measurements were significantly different, clinically the differences are probably insignificant.