Retinal image quality during accommodation
نویسندگان
چکیده
منابع مشابه
Accommodation stimulus–response function and retinal image quality
Accommodation stimulus-response function (ASRF) and its relationship to retinal image quality were investigated using a modified wavefront sensor. Ten subjects were presented with six vergence stimuli between 0.17 D and 5 D. For each vergence distance, ocular wavefronts and subjective visual acuity were measured. Wavefronts were analysed for a fixed 3-mm pupil diameter and for natural pupil siz...
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These two statements, to which we shall refer as Statement 1 and Statement 2, while seemingly contradictory, are each partly true, though neither is complete. The first says that accommodation increases the size of the retinal image, that is it makes the image " larger ", but larger than what? The second says that in accommodation the retinal image is decreased in size, that is the image become...
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The changes in the retinal image quality with accommodation in the human eye were studied by using a near-infrared double-pass apparatus. A slightly better modulation transfer function (MTF) in the unaccommodated eye with respect to the accommodated eye was found when using an artificial pupil with a fixed diameter. The technique allows the estimation of the MTF of the accommodated eye discount...
متن کاملImage 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 کاملRetinal image quality in the rodent eye.
Many rodents do not see well. For a target to be resolved by a rat or a mouse, it must subtend a visual angle of a degree or more. It is commonly assumed that this poor spatial resolving capacity is due to neural rather than optical limitations, but the quality of the retinal image has not been well characterized in these animals. We have modified a double-pass apparatus, initially designed for...
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ژورنال
عنوان ژورنال: Ophthalmic and Physiological Optics
سال: 2013
ISSN: 0275-5408
DOI: 10.1111/opo.12075