Optical design of a novel instrument that uses the Hartmann-Shack sensor and Zernike polynomials to measure and simulate customized refraction correction surgery outcomes and patient satisfaction
| Autor: | Rafael Marcato, Otavio G. Oliveira, Luis Gustavo Sabino, Vanderlei Salvador Bagnato, Mirian Numajiri, Antonio Cremasco, Fatima M. M. Yasuoka, Luis Alberto Vieira de Carvalho, C N Jarbas de Castro, Luciana de Matos |
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| Rok vydání: | 2016 |
| Předmět: |
Wavefront
Physics business.industry Zernike polynomials 05 social sciences Wavefront sensor Real image 050105 experimental psychology law.invention 03 medical and health sciences symbols.namesake 0302 clinical medicine Optics law 030221 ophthalmology & optometry symbols 0501 psychology and cognitive sciences Computer vision Artificial intelligence Prism business Adaptive optics Zemax Beam splitter |
| Zdroj: | Ophthalmic Technologies XXVI. |
| ISSN: | 0277-786X |
| Popis: | An optical system that conjugates the patient’s pupil to the plane of a Hartmann-Shack (HS) wavefront sensor has been simulated using optical design software. And an optical bench prototype is mounted using mechanical eye device, beam splitter, illumination system, lenses, mirrors, mirrored prism, movable mirror, wavefront sensor and camera CCD. The mechanical eye device is used to simulate aberrations of the eye. From this device the rays are emitted and travelled by the beam splitter to the optical system. Some rays fall on the camera CCD and others pass in the optical system and finally reach the sensor. The eye models based on typical in vivo eye aberrations is constructed using the optical design software Zemax. The computer-aided outcomes of each HS images for each case are acquired, and these images are processed using customized techniques. The simulated and real images for low order aberrations are compared using centroid coordinates to assure that the optical system is constructed precisely in order to match the simulated system. Afterwards a simulated version of retinal images is constructed to show how these typical eyes would perceive an optotype positioned 20 ft away. Certain personalized corrections are allowed by eye doctors based on different Zernike polynomial values and the optical images are rendered to the new parameters. Optical images of how that eye would see with or without corrections of certain aberrations are generated in order to allow which aberrations can be corrected and in which degree. The patient can then “personalize” the correction to their own satisfaction. This new approach to wavefront sensing is a promising change in paradigm towards the betterment of the patient-physician relationship. |
| Databáze: | OpenAIRE |
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