Changes in crystalline lens radii of curvature and lens tilt and decentration during dynamic accommodation in rhesus monkeys
نویسندگان
چکیده
منابع مشابه
Changes in crystalline lens radii of curvature and lens tilt and decentration during dynamic accommodation in rhesus monkeys.
Dynamic changes in crystalline lens radii of curvature and lens tilt and decentration were measured during centrally stimulated accommodation in four iridectomized eyes of two adolescent rhesus monkeys. Phakometry measurements were performed dynamically using a custom-built, video-based, Purkinje-image instrument. Lens anterior and posterior radii were calculated from reflections of paired ligh...
متن کاملCrystalline lens radii of curvature from Purkinje and Scheimpflug imaging.
We present a comparison between measurements of the radius of the anterior and posterior lens surface, which was performed using corrected Scheimpflug imaging and Purkinje imaging in the same group of participants (46 for the anterior lens, and 34 for the posterior lens). Comparisons were also made as a function of accommodation (0 to 7 D) in a subset of 11 eyes. Data were captured and processe...
متن کاملChanges in monkey crystalline lens spherical aberration during simulated accommodation in a lens stretcher.
PURPOSE The purpose of this study was to quantify accommodation-induced changes in the spherical aberration of cynomolgus monkey lenses. METHODS Twenty-four lenses from 20 cynomolgus monkeys (Macaca fascicularis; 4.4-16.0 years of age; postmortem time 13.5 ± 13.0 hours) were mounted in a lens stretcher. Lens spherical aberration was measured in the unstretched (accommodated) and stretched (re...
متن کاملDynamic accommodation in rhesus monkeys
The dynamics of Edinger-Westphal (EW) stimulated accommodation were studied in two young rhesus monkeys to understand the relationships between accommodative amplitude and rates of accommodation and disaccommodation. Accommodative responses were recorded with infrared photorefraction at five different amplitudes spanning the full EW stimulated accommodative range available to each eye. Combined...
متن کاملAccommodative changes in lens diameter in rhesus monkeys.
PURPOSE Some debate surrounds the accommodative mechanism in primates, particularly whether the lens equatorial diameter increases or decreases during accommodation. This study has been undertaken to measure the relationship between changes in lens diameter and refraction during accommodation in rhesus monkeys. METHODS Photorefraction was used to measure accommodation, and goniovideography wa...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2008
ISSN: 1534-7362
DOI: 10.1167/8.1.18