Adaptive eyeglasses for presbyopia correction: an original variable-focus technology

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A pair of diopter-adjustable eyeglasses for presbyopia correction

We describe and demonstrate a pair of diopter-adjustable eyeglasses aimed to correct presbyopia; the glasses provide a tunable optical power in the whole surface of the lens cell, eliminating the optical distortion typical of bifocal/trifocal or progressive glasses. The wearer can actively control the optical power by a simple sliding gesture on the bridge of the glasses, so that presbyopic vis...

متن کامل

Optimal Keratoplasty for the Correction of Presbyopia and Hypermetropia

Purpose. To evaluate prospectively the safety and efficacy of optimal keratoplasty for the correction of hyperopia and presbyopia. Methods. Consecutive patients undergoing bilateral optimal keratoplasty for refractive presbyopic and hypermetropic corrections were enrolled. Each patient received a complete ophthalmologic examination at baseline, 1 hour, 1 day, 1 week, 1 month, 3 months, and 6 mo...

متن کامل

Switchable Liquid Crystal Contact Lenses for the Correction of Presbyopia

Presbyopia is an age-related disorder where the lens of the eye hardens so that focusing on near objects becomes increasingly difficult. This complaint affects everyone over the age of 50. It is becoming progressively more relevant, as the average age of the global population continues to rise. Bifocal or varifocal spectacles are currently the best solution for those that require near and far v...

متن کامل

An original adaptive hypermedia aircraft handbook

Until recently, documentation in the industry was used mainly in paper format. With hypermedia, a new generation of documentation became possible. Currently, the documentation tends toward real intelligent application systems. Such systems are based on interactive and adaptive multimedia over the internet. The content is made of different types of media (text, graphics, image, video, sound,etc)...

متن کامل

An Adaptive Variable Block for Median Filter

In this paper, we present a median filter which uses an adaptive variable block. The two dimension median filter is a nonlinear digital image filtering method, which generally used to remove unwanted impulse noise. The median filter is normally used in the step of pre-processing to improve the performance. To assess performance of the proposed method, we vary noise level and block size. Experim...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Optics Express

سال: 2019

ISSN: 1094-4087

DOI: 10.1364/oe.27.010533