David A. Berntsen

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PURPOSE The purpose of this study is to determine the effect of higher-order aberrations after Corneal Refractive Therapy (CRT) on best-corrected visual acuity (BCVA) and the impact of pupil size on BCVA. METHODS High-contrast (HC) and low-contrast (LC) Bailey-Lovie BCVA was measured in the morning before and after pupil dilation on 20 myopes (mean(More)
PURPOSE The Study of Theories about Myopia Progression (STAMP) is a 2-year, double-masked, randomized clinical trial of myopic children 6 to 11 years of age. STAMP will evaluate the 1-year effect of progressive addition lenses (PALs) compared with single vision lenses (SVLs) on central refraction, peripheral refraction in four quadrants, and accommodative(More)
The relationship between accommodative lag and annual myopia progression was investigated using linear models in 592 myopic children wearing a full refractive correction in the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study. The mean (± SD) age and spherical equivalent refractive error at baseline were 10.4 ± 1.8(More)
PURPOSE To compare the effect of wearing, then ceasing to wear, progressive addition lenses (PALs) versus single vision lenses (SVLs) on myopia progression in children with high accommodative lag to evaluate accommodative lag and mechanical tension as theories of myopia progression. METHODS Eighty-five children (age range, 6-11 years) with spherical(More)
PURPOSE To evaluate the within- and between-reader reliability and the interrelation between 2 methods of grading meibography images. METHODS A video meibography sequence (1200 frames) was captured from 290 patients using near-infrared light (650-700 nm) and a near-infrared CCD camera. One frame was selected for grading by 2 masked readers using 2 scales,(More)
PURPOSE To determine the effect of progressive addition lenses (PALs) and single vision lenses (SVLs) on peripheral defocus in myopic children, and to compare the effect of myopic versus hyperopic peripheral defocus on foveal myopia progression. METHODS Eighty-four myopic children aged 6 to 11 years with spherical equivalent (SE) cycloplegic(More)
PURPOSE To determine the repeatability of eye length measurements made centrally and off-axis using a low-coherence interferometer. METHODS Eye length was measured (left eye) in 29 adults using the Haag-Streit Lenstar LS 900. Five measurements were made centrally, 10 degrees temporally, and 10 degrees nasally on the retina by the same examiner at two(More)
PURPOSE To evaluate the validity and repeatability of crystalline lens thickness measurements obtained by anterior segment optical coherence tomography (OCT). METHODS Forty-seven normal children (mean age, 11.06 +/- 2.30 yr) had their crystalline lens thickness measured with the Visante anterior segment OCT (Carl Zeiss Meditec, Dublin, CA) and with(More)
PURPOSE To determine the effect of a bifocal add and manifest correction on accommodative lag in myopic children with high accommodative lag, who have been reported to have the greatest reduction in myopia progression with progressive addition lenses (PALs). METHODS Monocular accommodative lag to a 4-D Badal stimulus was measured on two occasions 6 months(More)
PURPOSE To validate aberrometry-based relative peripheral refraction (RPR) measurements and to examine RPR differences in the nasal and temporal horizontal visual field. METHODS Thirty subjects underwent cycloplegia in the right eye. Ten measurements each were made centrally, 30 degrees nasally on the retina and 30 degrees temporally on the retina using(More)