کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8792034 | 1602554 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anterior lens capsule strains during simulated accommodation in porcine eyes
ترجمه فارسی عنوان
کپسول لنزهای قدامی در هنگام شبیه سازی در چشم های خوک
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کلمات کلیدی
کپسول لنز، محل اقامت، نژاد، لنز گوشت خوک،
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
ایمونولوژی و میکروب شناسی (عمومی)
چکیده انگلیسی
Experimental protocols have been developed to measure the spatial variation of the mechanical strains induced in the lens capsule during ex vivo lens stretching. The paper describes the application of these protocols to porcine lenses. The deformations and mechanical strains developed in the anterior capsule during each experiment were determined using full field digital image correlation techniques, by means of a speckle pattern applied to the lens surface. Several speckling techniques and illumination methods were assessed before a suitable combination was found. Additional data on the cross section shape of the anterior lens surface were obtained by Scheimpflug photography, to provide a means of correcting for lens curvature effects in the determination of the strains developed in the plane of the capsule. The capsule strains in porcine lenses exhibit non-linear behaviour, and hysteresis during loading and unloading. Peripheral regions experience higher magnitude strains than regions near the lens pole. The paper demonstrates the successful application of a procedure to make direct measurements of capsule strains simultaneously with ex vivo radial lens stretching. This experimental technique is applicable to future investigations on the mechanical characteristics of human lenses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Eye Research - Volume 168, March 2018, Pages 19-27
Journal: Experimental Eye Research - Volume 168, March 2018, Pages 19-27
نویسندگان
Antonio Pellegrino, Harvey John Burd, Laura Pinilla Cortés, Justin Christopher D'Antin, Nik Petrinic, Rafael I. Barraquer, Ralph Michael,