Estimation of stereovision in conditions of blurring simulation

Gunta Krumina; Maris Ozolinsh; Ivars Lacis; Vsevolod Lyakhovetskii

doi:10.1117/12.639410

13 June 2006 Estimation of stereovision in conditions of blurring simulation

Gunta Krumina, Maris Ozolinsh, Ivars Lacis, Vsevolod Lyakhovetskii

Proceedings Volume 5946, Optical Materials and Applications; 59461N (2006) https://doi.org/10.1117/12.639410
Event: Optical Materials and Applications, 2005, Tartu, Estonia

Abstract

The aim of this study was to evaluate the simulation of eye pathologies, such as amblyopia and cataracts, to estimate the stereovision in artificial conditions, and to compare the results on the stereothreshold obtained in artificial and real- pathologic conditions. Characteristic of the above-mentioned real-life forms of a reduced vision is a blurred image in one of the eyes. The blurring was simulated by (i) defocusing, (ii) blurred stimuli on the screen, and (iii) occluding of an eye with PLZT or PDLC plates. When comparing the methods, two parameters were used: the subject's visual acuity and the modulation depth of the image. The eye occluder method appeared to systematically provide higher stereothreshold values than the rest of the methods. The PLZT and PDLC plates scattered more in the blue and decreased the contrast of the stimuli when the blurring degree was increased. In the eye occluder method, the stereothreshold increased faster than in the defocusation and monitor stimuli methods when the visual acuity difference was higher than 0.4. It has been shown that the PLZT and PDLC plates are good optical phantoms for the simulation of a cataract, while the defocusation and monitor stimuli methods are more suitable for amblyopia.

Citation Download Citation

Gunta Krumina, Maris Ozolinsh, Ivars Lacis, and Vsevolod Lyakhovetskii "Estimation of stereovision in conditions of blurring simulation", Proc. SPIE 5946, Optical Materials and Applications, 59461N (13 June 2006); https://doi.org/10.1117/12.639410

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