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This report describes developmental changes in children's copy productions of the Rey-Osterrieth Complex Figure as well as a new method for evaluating these productions that is sensitive to parameters relevant for neuropsychological diagnosis. Based on protocols from a standardization sample of 454 children between the ages of 5 and 14, a system was devised(More)
PURPOSE To report a computerized method for determining visual acuity in children using the Amblyopia Treatment Study visual acuity testing protocol. METHODS A computerized visual acuity tester was developed that uses a programmed handheld device that uses the Palm operating system (Palm, Inc, Santa Clara, California). The handheld device communicates(More)
Mutualisms, beneficial interactions between species, are expected to be unstable because delivery of benefit likely involves fitness costs and selection should favour partners that deliver less benefit. Yet, mutualisms are common and persistent, even in the largely promiscuous associations between plants and soil microorganisms such as arbuscular(More)
PURPOSE We developed a near ocular dominance test modeled after the distance hole-in-the-card test and assessed both test-retest reliability of four tests of ocular dominance and agreement between tests. METHODS Forty-six subjects aged 18 to 78 years with visual acuity 20/40 or better in each eye were enrolled from a primary care practice. All subjects(More)
PURPOSE To assess the test-retest reliability of the electronic Early Treatment Diabetic Retinopathy Study (E-ETDRS) visual acuity algorithm using the computerized Electronic Visual Acuity (EVA) tester in children 7 to <13 years old. DESIGN Test-retest reliability study. METHODS This multicenter study involved 245 subjects at four clinical sites. As the(More)
This report describes developmental changes in children's memory productions of the Rey-Osterrieth Complex Figure and in the relation of memory to copy productions, and a method for evaluating these productions that is sensitive to parameters relevant to neuropsychological diagnosis. Based on protocols from a standardization sample of 454 children between(More)
PURPOSE To determine factors associated with pretreatment and posttreatment stereoacuity in subjects with moderate anisometropic amblyopia. METHODS Data for subjects enrolled in seven studies conducted by the Pediatric Eye Disease Investigator Group were pooled. The sample included 633 subjects aged 3 to <18 years with anisometropic amblyopia, no(More)
PURPOSE To develop a presentation protocol for the new Frisby-Davis 2 (FD2) distance stereoacuity test. DESIGN Prospective data collection. METHODS Stereoacuity was tested monocularly and binocularly in 95 patients with a variety of strabismic and nonstrabismic conditions, using the FD2, employing a modified staircase procedure. The Preschool Randot(More)
BACKGROUND We prospectively evaluated the performance of three stereoacuity tests in patients with a wide range of strabismus angles to determine the maximum angle of horizontal strabismus consistent with true stereopsis as well as the extent of false-positive results. METHODS Subjects age > or = 5 years old (n = 186) with constant horizontal strabismus(More)