Semi-automatic evaluation of intraocular lenses (IOL) using a mechanical eye model

A. Drauschke; E. Rank; M. Forjan; L. Traxler

doi:10.1117/12.2002150

26 March 2013 Semi-automatic evaluation of intraocular lenses (IOL) using a mechanical eye model

A. Drauschke, E. Rank, M. Forjan, L. Traxler

Proceedings Volume 8567, Ophthalmic Technologies XXIII; 85671N (2013) https://doi.org/10.1117/12.2002150
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

As cataracts are the most common reason for loss of vision with an age over 55, the implantation of intraocular intraocular lenses is one of the most common surgical interventions. The quality measurement and test instructions for the patients. Therefore more efforts are put into the individualization of IOL in order to achieve better imaging properties. Two examples of typical quality standards for IOL are the modulated transfer function (MTF) and the Strehl ratio which can be measured in vivo or also in mechanical eye models. A mechanical eye model in the scale 1:1 is presented. It has been designed to allow the measurement of the MTF and Strehl ratio and simultaneous evaluation of physiological imaging quality. The eye model allows the automatic analysis of the IOL especially focused on the tolerance for tilting and decentering. Cornea, iris aperture and IOL type are interchangeable, because all these parts are implemented by the use of separated holders. The IOL is mounted on a shift plate. Both are mounted on a tilt plate. This set-up guarantees an independent decentration and tilt of the IOL, both moved by electrical drives. This set–up allows a two–dimensional tolerance analysis of decentration and tilt effects. Different 100×100 point (decentration×tilt) analyzes for various iris apertures, needing only approximately 15 minutes, are presented.

Citation Download Citation

A. Drauschke, E. Rank, M. Forjan, and L. Traxler "Semi-automatic evaluation of intraocular lenses (IOL) using a mechanical eye model", Proc. SPIE 8567, Ophthalmic Technologies XXIII, 85671N (26 March 2013); https://doi.org/10.1117/12.2002150

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available