In Vivo Analysis of Ciliary Muscle Morphologic Changes with Accommodation and Axial Ametropia
نویسندگان
چکیده
منابع مشابه
Ciliary muscle morphologic changes with accommodation and axial ametropia.
PURPOSE To use anterior segment optical coherence tomography (AS-OCT) to analyze ciliary muscle morphology and changes with accommodation and axial ametropia. METHODS Fifty prepresbyopic volunteers, aged 19 to 34 years were recruited. High-resolution images were acquired of nasal and temporal ciliary muscles in the relaxed state and at stimulus vergence levels of -4 and -8 D. Objective accomm...
متن کاملIn Vivo Analysis of Ciliary Muscle Morphologic Changes with Accommodation and Axial Ametropia
METHODS. Fifty prepresbyopic volunteers, aged 19 to 34 years were recruited. High-resolution images were acquired of nasal and temporal ciliary muscles in the relaxed state and at stimulus vergence levels of 4 and 8 D. Objective accommodative responses and axial lengths were also recorded. Two-way, mixed-factor analyses of variance (ANOVAs) were used to assess the changes in ciliary muscle para...
متن کاملMorphologic characteristics of the human ciliary muscle
The present review focusses on the morphological characteristics of the normal human ciliary muscle. It develops in the second and third trimenon during pregnancy but continues to change after birth with developing accommodation. The mature muscle forms three distinguishable portions which are connected but show individual characteristics. The outer portion origins and inserts with tendon-like ...
متن کاملAuthor Response: Human Accommodative Ciliary Muscle Configuration Changes Are Consistent With Schachar's Mechanism of Accommodation.
We appreciate the comments Schachar made on human accommodative ciliary muscle configuration. We agree with the author that the ciliary muscle image in our Figure 2B1 appears to show notching of the anterior radial muscle fibers in the accommodative eye. This observation may be interpreted as the movement of the anterior radial muscle fibers. We thank the author for bringing up this important i...
متن کاملRetinal image in axial and refractive ametropia.
THERE are some features relative to the size of the retinal images in these two conditions which are of general interest, though they are rarely discussed. Axial Ametropia.-The " basic " (blurred) retinal image is smallest in hyperopia, intermediate in emmetropia, and largest in myopia. The size of a blurred retinal image is best taken from the points in the diffusion circles at the extremities...
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ژورنال
عنوان ژورنال: Investigative Opthalmology & Visual Science
سال: 2010
ISSN: 1552-5783
DOI: 10.1167/iovs.10-5787