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doi:10.22028/D291-38724
Titel: | Intensity simulation of photic effects after cataract surgery for off-axis light sources |
VerfasserIn: | Omidi, Pooria Cayless, Alan Langenbucher, Achim |
Sprache: | Englisch |
Titel: | PloS One |
Bandnummer: | 17 |
Heft: | 8 |
Verlag/Plattform: | Plos |
Erscheinungsjahr: | 2022 |
DDC-Sachgruppe: | 610 Medizin, Gesundheit |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Photopsia is a photic phenomenon that can be associated with intraocular lenses after cataract surgery. To calculate the relative light intensity of photic effects observed after cataract surgery at the foveal region as the most sensitive region of the retina, photopsia was simulated using the ZEMAX optical design software. The simulations are based on the LiouBrennan eye model with a pupil diameter of 4.5 mm and incorporating implanted IOLs. The hydrophilic IOLs implanted in the eye model have a power of 21 diopter (D) with an optic diameter of 6 mm and 7 mm. Four different intensity detectors are located in specific regions of the eye in this simulation. The ray-tracing analysis was carried out for variations of incident ray angle of 0˚ to 90˚ (temporally) in steps of 1˚. Depending on the range of incident ray angle, the light intensity was detected at detectors located on the fovea, nasal side of the retina, or the edge surface of the IOLs. Some portion of the input light was detected at specific incident angles in the foveal region. By altering the IOLs edge design to a fully reflective or anti-reflective surface, the range over which the light intensity is detected on the fovea can be shifted. Additionally, with the absorbing edge design, no intensity was detected at the foveal region for incident ray angles larger than 5˚. Therefore an absorbing edge design can make photic effects less disturbing for patients. |
DOI der Erstveröffentlichung: | 10.1371/journal.pone.0272705 |
URL der Erstveröffentlichung: | https://doi.org/10.1371/journal.pone.0272705 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-387245 hdl:20.500.11880/34897 http://dx.doi.org/10.22028/D291-38724 |
ISSN: | 1932-6203 |
Datum des Eintrags: | 17-Jan-2023 |
Bezeichnung des in Beziehung stehenden Objekts: | Supporting information |
In Beziehung stehendes Objekt: | https://doi.org/10.1371/journal.pone.0272705.s001 |
Fakultät: | M - Medizinische Fakultät |
Fachrichtung: | M - Augenheilkunde |
Professur: | M - Univ.-Prof. Dr. Dipl.-Ing. Achim Langenbucher |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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journal.pone.0272705.pdf | 2,11 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons