Image registration reveals central lens thickness minimally increases during accommodation
نویسندگان
چکیده
منابع مشابه
Image registration reveals central lens thickness minimally increases during accommodation
PURPOSE To evaluate anterior chamber depth, central crystalline lens thickness and lens curvature during accommodation. SETTING California Retina Associates, El Centro, CA, USA. DESIGN Healthy volunteer, prospective, clinical research swept-source optical coherence biometric image registration study of accommodation. METHODS Ten subjects (4 females and 6 males) with an average age of 22.5...
متن کاملImage registration required for magnetic resonance imaging experiments of accommodation.
Using 7 Tesla magnetic resonance imaging (MRI), Richdale et al. measured the change in lens and ciliary muscle ring dimensions of the occluded right eyes of 26 emmetropic subjects (30–50 years of age) while their left eyes changed fixation on a Maltese cross placed at different distances to stimulate from 0 to 6 diopters of accommodation. The MRI scans were repeated at least eight times for eac...
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Despite the evidence for consensual accommodation in response to consensual accommodative stimuli, only a few studies have investigated the binocular accommodative response to unequal (aniso) accommodative stimuli. Past studies investigating an unequal binocular accommodative response (aniso-accommodation) to aniso-accommodative stimuli have been limited by viewing conditions and measurement te...
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I was excited by the results presented in the excellent paper by Sheppard et al. showing a 2.3% increase in lens volume and a decrease of 1.82% in surface during accommodation in human volunteers. I was very gratified that they acknowledged that we had predicted similar changes in human lens volume and surface based on mathematical modeling of human lens dimensions, using the Pappus theorem as ...
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where d is the distance between the center of masses of the two symmetrical halves of the CSAs. Critical to the use of this theorem is the determination of the exact center of mass of each CSA (6, 7). The authors did not specify how the center of mass was determined nor the accuracy, precision, and variation of this measurement in the bovine lens. There are additional significant deficiencies w...
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ژورنال
عنوان ژورنال: Clinical Ophthalmology
سال: 2017
ISSN: 1177-5483
DOI: 10.2147/opth.s144238