Assessment of the Catford drum in visual acuity testing and its use as a measurement of visual performance in low-vision patients. - Abstract - Europe PMC
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Visual Acuity Assessment in Children - EyeWiki
Visual acuity in children | PPT
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Visual Acuity Assessment in Children - EyeWiki
Visual assessment of infants: vernier targets for the Catford drum. - Abstract - Europe PMC