{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T15:59:58Z","timestamp":1775577598799,"version":"3.50.1"},"reference-count":10,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2011,12,1]],"date-time":"2011-12-01T00:00:00Z","timestamp":1322697600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2011,12,1]],"date-time":"2011-12-01T00:00:00Z","timestamp":1322697600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["OVS"],"published-print":{"date-parts":[[2011,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose.<\/jats:title>\n                    <jats:p>We describe how to construct a low\u2010cost and robust variable astigmatism\u2010correcting device manufactured using a pair of identical commercial ophthalmic lenses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods.<\/jats:title>\n                    <jats:p>Variable astigmatism power can be obtained by relative rotation of two cross cylinders with the same prescription (for this work: S = +2.00 D, C = \u22124.00 D was used). The rotation of the whole ensemble allows the user to choose the astigmatism axis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results.<\/jats:title>\n                    <jats:p>The lens system presented here is able to correct astigmatism for eyepieces, compensating eyeglasses prescriptions from \u22128.00 to 0.00 D without generation of higher order aberrations and always with mean sphere power close to 0. Theoretical description of the piece, calibration, measurement of aberrations, and examples of use within a microscope are included.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions.<\/jats:title>\n                    <jats:p>An inexpensive and robust variable\u2010astigmatism device for eyepieces can be manufactured using two equal ophthalmic lenses. The system is robust in the sense that small misalignments only minimally affect mean sphere power and do not affect higher order aberrations. This unique device can be adapted to many users.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1097\/opx.0b013e3182349baf","type":"journal-article","created":{"date-parts":[[2011,10,7]],"date-time":"2011-10-07T17:33:03Z","timestamp":1318008783000},"page":"1524-1528","source":"Crossref","is-referenced-by-count":8,"title":["Adaptive Astigmatism\u2010Correcting Device for Eyepieces"],"prefix":"10.1002","volume":"88","author":[{"given":"Justo","family":"Arines","sequence":"first","affiliation":[{"name":"Area de \u00d3ptica Departamento de F\u00edsica Aplicada Facultad de F\u00edsica Universidad de Santiago de Compostela Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva","family":"Acosta","sequence":"additional","affiliation":[{"name":"Area de \u00d3ptica Departamento de F\u00edsica Aplicada Facultad de F\u00edsica Universidad de Santiago de Compostela Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,12,1]]},"reference":[{"key":"e_1_2_6_2_2","unstructured":"Tele Vue Optics Inc.Available at:www.televue.com. 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US Patent 7 611 244 B2.2009."},{"key":"e_1_2_6_7_2","doi-asserted-by":"crossref","first-page":"286","DOI":"10.1117\/12.7971977","article-title":"A remote subjective refractor employing continuously variable sphere\u2010cylinder correction","volume":"15","author":"Humphrey WE","year":"1976","journal-title":"Opt Eng"},{"key":"e_1_2_6_8_2","doi-asserted-by":"crossref","first-page":"1154","DOI":"10.1097\/00006324-198112000-00016","article-title":"Lens effectivity in terms of dioptric power matrices","volume":"58","author":"Keating MP","year":"1981","journal-title":"Am J Optom Physiol Opt"},{"key":"e_1_2_6_9_2","doi-asserted-by":"crossref","first-page":"794","DOI":"10.1097\/00006324-198810000-00003","article-title":"Algebra of sphero\u2010cylinders and refractive errors, and their means, variance and standard deviation","volume":"65","author":"Harris WF","year":"1988","journal-title":"Am J Optom Physiol Opt"},{"key":"e_1_2_6_10_2","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1097\/00006324-199706000-00019","article-title":"Power vectors: an application of Fourier analysis to the description and statistical analysis of refractive error","volume":"74","author":"Thibos LN","year":"1997","journal-title":"Optom Vis Sci"},{"key":"e_1_2_6_11_2","first-page":"149","article-title":"Instrument review: The Humprey vision analyzer","volume":"64","author":"Efron N","year":"1981","journal-title":"Aust J Optom"}],"container-title":["Optometry and Vision Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1097\/OPX.0b013e3182349baf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1097\/OPX.0b013e3182349baf","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1097\/OPX.0b013e3182349baf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T07:11:17Z","timestamp":1774941077000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1097\/OPX.0b013e3182349baf"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,12]]},"references-count":10,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2011,12]]}},"alternative-id":["10.1097\/OPX.0b013e3182349baf"],"URL":"https:\/\/doi.org\/10.1097\/opx.0b013e3182349baf","archive":["Portico"],"relation":{},"ISSN":["1040-5488","1538-9235"],"issn-type":[{"value":"1040-5488","type":"print"},{"value":"1538-9235","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,12]]}}}