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Fig. 1 | Eye and Vision

Fig. 1

From: Efficacy of orthokeratology lens with the modified small treatment zone on myopia progression and visual quality: a randomized clinical trial

Fig. 1

MATLAB software was used to analyze differences in topographic maps of myopic children at different time points to obtain topographic parameters. a Tangential curvature map at baseline; b Tangential curvature map at 1-month visit; c The difference map used to determine the treatment zone (TZ) parameters (TZ size, area, decentration distance, etc.)

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Eye and Vision

ISSN: 2326-0254