Dr. Malwina Geniusz Profile

Dr. Malwina Geniusz

Optometrist

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Author

Publications (6)

Proceedings Article | 19 September 2017 Paper

The relationship between the retinal image quality and the refractive index of defects arising in IOL: numerical analysis

Malwina Geniusz

Proceedings Volume 10396, 1039631 (2017) https://doi.org/10.1117/12.2274337

KEYWORDS: Image quality, Eye models, Eye, Numerical analysis, Image analysis, Modulation transfer functions, Light scattering, Refractive index, Point spread functions

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Proceedings Article | 6 September 2017 Paper

Six years of vision screening tests in pre-school children in kindergartens of Wroclaw

Marta Szmigiel, Malwina Geniusz, Ireneusz Szmigiel

Proceedings Volume 10367, 103670L (2017) https://doi.org/10.1117/12.2274488

KEYWORDS: Visualization, Color vision, Defect detection, Visual optics, Eye, Photonics, Ophthalmology, Diagnostics

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Proceedings Article | 6 September 2017 Paper

Color vision tests comparison: Farnsworth D-15 versus Lanthony D-15

Marta Szmigiel, Malwina Geniusz, Maciej Geniusz

Proceedings Volume 10367, 103670G (2017) https://doi.org/10.1117/12.2274486

KEYWORDS: Color vision, Color blindness, Cones, Data processing, Roads, Image processing

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Proceedings Article | 6 September 2017 Paper

Temporary effects of alcohol on color vision

Maciej Geniusz, Malwina Geniusz, Marta Szmigiel, Joanna Przeździecka-Dołyk

Proceedings Volume 10367, 103670K (2017) https://doi.org/10.1117/12.2274470

KEYWORDS: Color vision, Brain, Visualization

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Proceedings Article | 6 September 2017 Paper

Color vision deficiencies and the child’s willingness for visual activity: preliminary research

Malwina Geniusz, Marta Szmigiel, Maciej Geniusz

Proceedings Volume 10367, 103670J (2017) https://doi.org/10.1117/12.2274469

KEYWORDS: Color vision, Visualization

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Proceedings Article | 28 September 2016 Paper

A technique of experimental and numerical analysis of influence of defects in the intraocular lens on the retinal image quality

Malwina Geniusz, Marek Zając

Proceedings Volume 9971, 997125 (2016) https://doi.org/10.1117/12.2238082

KEYWORDS: Image quality, Eye models, Eye, Zemax, Numerical analysis, Light scattering, Modulation transfer functions, Image analysis, Retina, Cornea

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Intraocular lens (IOL) is an artificial lens implanted into the eye in order to restore correct vision after the removal of natural lens cloudy due to cataract. The IOL prolonged stay in the eyeball causes the creation of different changes on the surface and inside the implant mainly in form of small-size local defects such as vacuoles and calcium deposites. Their presence worsens the imaging properties of the eye mainly due to occurence of scattered light thus deteriorating the vision quality of patients after cataract surgery. It is very difficult to study influence the effects of these changes on image quality in real patients. To avoid these difficulties two other possibilities were chosen: the analysis of the image obtained in an optomechanical eye model with artificially aged IOL as well as numerical calculation of the image characteristics while the eye lens is burdened with adequately modeled defects. In experiments the optomechanical model of an eye consisting of a glass “cornea”, chamber filled with liquid where the IOL under investigation was inserted and a high resulution CCC detector serving as a “retina” was used. The Modulation Transfer Function (MTF) of such “eye” was evaluated on the basis of image of an edge. Experiments show that there is significant connection between ageing defects and decrease in MTF parameters. Numerical part was performed with a computer programme for optical imaging analysis (OpticStudio Professional, Zemax Professional from Radiant Zemax, LLC). On the basis of Atchison eye model with lens burdened with defects Modulation Transfer Functio was calculated. Particular parameters of defects used in a numerical model were based on own measurements. Numerical simulation also show significant connection between ageing defects and decrease of MTF parameters. With this technique the influence of types, density and distribution of local defect in the IOL on the retinal image quality can be evaluated quickly without the need of performing very difficult and even dangereous experiments on real human patients.

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