Reproducibility of automatic standard digital analysis of lens opacities

S. K.M. Garrett; L. D. Robman; C. A. McCarty; A. P. Thomas; J. J. McNeil; H. R. Taylor

doi:10.1111/j.1442-9071.1998.tb01365.x

Reproducibility of automatic standard digital analysis of lens opacities

S. K.M. Garrett, L. D. Robman, C. A. McCarty, A. P. Thomas, J. J. McNeil, H. R. Taylor

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Abstract

Purpose: This study was designed to assess the repeatability of the standard analysis of images taken with the Nidek EAS-1000 anterior segment analysis system (Nidek Co. Ltd, Japan). Methods: Participants in a large clinical trial (the vitamin E, cataract and age-related maculopathy study) were asked to undergo two independent examinations to assess the repeatability of primary outcome measures. After pupil dilatation to at least 6.5 mm, 104 eyes were photographed using the retro-illumination method and the slit-beam method. Results: Intra-class correlation coefficients were: slit images, R = 0.982; retro-illumination images, R = 0.978. Conclusion: Repeatability of measurement of lens opacity from EAS-1000 images using automated standard analysis was high.

Original language	English (US)
Pages (from-to)	S29-S31
Journal	Australian and New Zealand Journal of Ophthalmology
Volume	26
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1111/j.1442-9071.1998.tb01365.x
State	Published - May 1998

Keywords

Cataract
Digital analysis
Image analysis
Repeatability
Scheimpflug photography

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AU - Thomas, A. P.

AU - McNeil, J. J.

AU - Taylor, H. R.

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N2 - Purpose: This study was designed to assess the repeatability of the standard analysis of images taken with the Nidek EAS-1000 anterior segment analysis system (Nidek Co. Ltd, Japan). Methods: Participants in a large clinical trial (the vitamin E, cataract and age-related maculopathy study) were asked to undergo two independent examinations to assess the repeatability of primary outcome measures. After pupil dilatation to at least 6.5 mm, 104 eyes were photographed using the retro-illumination method and the slit-beam method. Results: Intra-class correlation coefficients were: slit images, R = 0.982; retro-illumination images, R = 0.978. Conclusion: Repeatability of measurement of lens opacity from EAS-1000 images using automated standard analysis was high.

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Reproducibility of automatic standard digital analysis of lens opacities

Abstract

Keywords

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