Light-intensity distribution in eccentric photorefraction crescents
We try to improve the accuracy of eccentric photorefraction by taking more information into account than just the size and tilt of the crescent. Based on Gaussian optics and the assumption of an isotropic scattering retina, a theoretical analysis of the light-intensity distribution in the pupils of...
Gespeichert in:
| Veröffentlicht in: | Journal of the Optical Society of America. A, Optics, image science, and vision Optics, image science, and vision, 1998-06, Vol.15 (6), p.1500-1511 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1511 |
|---|---|
| container_issue | 6 |
| container_start_page | 1500 |
| container_title | Journal of the Optical Society of America. A, Optics, image science, and vision |
| container_volume | 15 |
| creator | Kusel, R Oechsner, U Wesemann, W Russlies, S Irmer, E M Rassow, B |
| description | We try to improve the accuracy of eccentric photorefraction by taking more information into account than just the size and tilt of the crescent. Based on Gaussian optics and the assumption of an isotropic scattering retina, a theoretical analysis of the light-intensity distribution in the pupils of astigmatic eyes is presented. The method is applied to different photorefractor setups (point light source, long linear light source, knife-edge aperture, and circular aperture). In the case of a knife-edge aperture the crescent structure can be formulated analytically. In the case of a circular aperture an analytic description is possible only for spherical refractive errors, but astigmatic refractive errors can be determined from crescent parameters with neural networks. |
| doi_str_mv | 10.1364/JOSAA.15.001500 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_79909948</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>79909948</sourcerecordid><originalsourceid>FETCH-LOGICAL-c292t-b860bfcd9ffe8e092eb8326ded624bdb16cdc2c719b572a0bffc579e25105fbe3</originalsourceid><addsrcrecordid>eNo9kL1PwzAQxS0EKqUwMyFlYkt7dmLHHquKT1XqAMxW7JypUZsU2xn635N-iOlO93739PQIuacwpYUoZ--rj_l8SvkUgHKACzKmnEEuecEuhx1kmVecqWtyE-MPAJRCViMyUoIyVagxWSz99zrlvk3YRp_2WeNjCt70yXdt5tsMrcV2uNhst-5SF9CF2h5FGzAetHhLrly9iXh3nhPy9fz0uXjNl6uXt8V8mVumWMqNFGCcbZRzKBEUQyMLJhpsBCtNY6iwjWW2osrwitUD6yyvFDJOgTuDxYQ8nnx3ofvtMSa99UOCzaZuseujrpQCpUo5gLMTaEMX4xBZ74Lf1mGvKehDbfpYm6Zcn2obPh7O1r3ZYvPPn3sq_gBQbWqg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>79909948</pqid></control><display><type>article</type><title>Light-intensity distribution in eccentric photorefraction crescents</title><source>MEDLINE</source><source>Optica Publishing Group Journals</source><creator>Kusel, R ; Oechsner, U ; Wesemann, W ; Russlies, S ; Irmer, E M ; Rassow, B</creator><creatorcontrib>Kusel, R ; Oechsner, U ; Wesemann, W ; Russlies, S ; Irmer, E M ; Rassow, B</creatorcontrib><description>We try to improve the accuracy of eccentric photorefraction by taking more information into account than just the size and tilt of the crescent. Based on Gaussian optics and the assumption of an isotropic scattering retina, a theoretical analysis of the light-intensity distribution in the pupils of astigmatic eyes is presented. The method is applied to different photorefractor setups (point light source, long linear light source, knife-edge aperture, and circular aperture). In the case of a knife-edge aperture the crescent structure can be formulated analytically. In the case of a circular aperture an analytic description is possible only for spherical refractive errors, but astigmatic refractive errors can be determined from crescent parameters with neural networks.</description><identifier>ISSN: 1084-7529</identifier><identifier>EISSN: 1520-8532</identifier><identifier>DOI: 10.1364/JOSAA.15.001500</identifier><identifier>PMID: 9612939</identifier><language>eng</language><publisher>United States</publisher><subject>Animals ; Astigmatism - physiopathology ; Humans ; Light ; Models, Biological ; Ophthalmology - methods ; Optics and Photonics ; Refractive Errors - diagnosis ; Scattering, Radiation</subject><ispartof>Journal of the Optical Society of America. A, Optics, image science, and vision, 1998-06, Vol.15 (6), p.1500-1511</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c292t-b860bfcd9ffe8e092eb8326ded624bdb16cdc2c719b572a0bffc579e25105fbe3</citedby><cites>FETCH-LOGICAL-c292t-b860bfcd9ffe8e092eb8326ded624bdb16cdc2c719b572a0bffc579e25105fbe3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3245,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9612939$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kusel, R</creatorcontrib><creatorcontrib>Oechsner, U</creatorcontrib><creatorcontrib>Wesemann, W</creatorcontrib><creatorcontrib>Russlies, S</creatorcontrib><creatorcontrib>Irmer, E M</creatorcontrib><creatorcontrib>Rassow, B</creatorcontrib><title>Light-intensity distribution in eccentric photorefraction crescents</title><title>Journal of the Optical Society of America. A, Optics, image science, and vision</title><addtitle>J Opt Soc Am A Opt Image Sci Vis</addtitle><description>We try to improve the accuracy of eccentric photorefraction by taking more information into account than just the size and tilt of the crescent. Based on Gaussian optics and the assumption of an isotropic scattering retina, a theoretical analysis of the light-intensity distribution in the pupils of astigmatic eyes is presented. The method is applied to different photorefractor setups (point light source, long linear light source, knife-edge aperture, and circular aperture). In the case of a knife-edge aperture the crescent structure can be formulated analytically. In the case of a circular aperture an analytic description is possible only for spherical refractive errors, but astigmatic refractive errors can be determined from crescent parameters with neural networks.</description><subject>Animals</subject><subject>Astigmatism - physiopathology</subject><subject>Humans</subject><subject>Light</subject><subject>Models, Biological</subject><subject>Ophthalmology - methods</subject><subject>Optics and Photonics</subject><subject>Refractive Errors - diagnosis</subject><subject>Scattering, Radiation</subject><issn>1084-7529</issn><issn>1520-8532</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kL1PwzAQxS0EKqUwMyFlYkt7dmLHHquKT1XqAMxW7JypUZsU2xn635N-iOlO93739PQIuacwpYUoZ--rj_l8SvkUgHKACzKmnEEuecEuhx1kmVecqWtyE-MPAJRCViMyUoIyVagxWSz99zrlvk3YRp_2WeNjCt70yXdt5tsMrcV2uNhst-5SF9CF2h5FGzAetHhLrly9iXh3nhPy9fz0uXjNl6uXt8V8mVumWMqNFGCcbZRzKBEUQyMLJhpsBCtNY6iwjWW2osrwitUD6yyvFDJOgTuDxYQ8nnx3ofvtMSa99UOCzaZuseujrpQCpUo5gLMTaEMX4xBZ74Lf1mGvKehDbfpYm6Zcn2obPh7O1r3ZYvPPn3sq_gBQbWqg</recordid><startdate>19980601</startdate><enddate>19980601</enddate><creator>Kusel, R</creator><creator>Oechsner, U</creator><creator>Wesemann, W</creator><creator>Russlies, S</creator><creator>Irmer, E M</creator><creator>Rassow, B</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19980601</creationdate><title>Light-intensity distribution in eccentric photorefraction crescents</title><author>Kusel, R ; Oechsner, U ; Wesemann, W ; Russlies, S ; Irmer, E M ; Rassow, B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c292t-b860bfcd9ffe8e092eb8326ded624bdb16cdc2c719b572a0bffc579e25105fbe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Animals</topic><topic>Astigmatism - physiopathology</topic><topic>Humans</topic><topic>Light</topic><topic>Models, Biological</topic><topic>Ophthalmology - methods</topic><topic>Optics and Photonics</topic><topic>Refractive Errors - diagnosis</topic><topic>Scattering, Radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kusel, R</creatorcontrib><creatorcontrib>Oechsner, U</creatorcontrib><creatorcontrib>Wesemann, W</creatorcontrib><creatorcontrib>Russlies, S</creatorcontrib><creatorcontrib>Irmer, E M</creatorcontrib><creatorcontrib>Rassow, B</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of the Optical Society of America. A, Optics, image science, and vision</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kusel, R</au><au>Oechsner, U</au><au>Wesemann, W</au><au>Russlies, S</au><au>Irmer, E M</au><au>Rassow, B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Light-intensity distribution in eccentric photorefraction crescents</atitle><jtitle>Journal of the Optical Society of America. A, Optics, image science, and vision</jtitle><addtitle>J Opt Soc Am A Opt Image Sci Vis</addtitle><date>1998-06-01</date><risdate>1998</risdate><volume>15</volume><issue>6</issue><spage>1500</spage><epage>1511</epage><pages>1500-1511</pages><issn>1084-7529</issn><eissn>1520-8532</eissn><abstract>We try to improve the accuracy of eccentric photorefraction by taking more information into account than just the size and tilt of the crescent. Based on Gaussian optics and the assumption of an isotropic scattering retina, a theoretical analysis of the light-intensity distribution in the pupils of astigmatic eyes is presented. The method is applied to different photorefractor setups (point light source, long linear light source, knife-edge aperture, and circular aperture). In the case of a knife-edge aperture the crescent structure can be formulated analytically. In the case of a circular aperture an analytic description is possible only for spherical refractive errors, but astigmatic refractive errors can be determined from crescent parameters with neural networks.</abstract><cop>United States</cop><pmid>9612939</pmid><doi>10.1364/JOSAA.15.001500</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1084-7529 |
| ispartof | Journal of the Optical Society of America. A, Optics, image science, and vision, 1998-06, Vol.15 (6), p.1500-1511 |
| issn | 1084-7529 1520-8532 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_79909948 |
| source | MEDLINE; Optica Publishing Group Journals |
| subjects | Animals Astigmatism - physiopathology Humans Light Models, Biological Ophthalmology - methods Optics and Photonics Refractive Errors - diagnosis Scattering, Radiation |
| title | Light-intensity distribution in eccentric photorefraction crescents |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-03T02%3A32%3A31IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Light-intensity%20distribution%20in%20eccentric%20photorefraction%20crescents&rft.jtitle=Journal%20of%20the%20Optical%20Society%20of%20America.%20A,%20Optics,%20image%20science,%20and%20vision&rft.au=Kusel,%20R&rft.date=1998-06-01&rft.volume=15&rft.issue=6&rft.spage=1500&rft.epage=1511&rft.pages=1500-1511&rft.issn=1084-7529&rft.eissn=1520-8532&rft_id=info:doi/10.1364/JOSAA.15.001500&rft_dat=%3Cproquest_cross%3E79909948%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=79909948&rft_id=info:pmid/9612939&rfr_iscdi=true |