{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T08:00:26Z","timestamp":1774944026316,"version":"3.50.1"},"reference-count":30,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2012,2,1]],"date-time":"2012-02-01T00:00:00Z","timestamp":1328054400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2012,2,1]],"date-time":"2012-02-01T00:00:00Z","timestamp":1328054400000},"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":[[2012,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose.<\/jats:title>\n                    <jats:p>To determine the extent of extended wear (EW) contact lens prescribing worldwide and to characterize the associated demographics and fitting patterns.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods.<\/jats:title>\n                    <jats:p>Up to 1000 survey forms were sent to contact lens fitters in up to 39 countries between January and March every year for five consecutive years (2006\u20132010). Practitioners were asked to record data relating to the first 10 contact lens fits or refits performed after receiving the survey form. Survey data collected since 1997 was also analyzed to assess EW fitting trends since that time.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results.<\/jats:title>\n                    <jats:p>Details for lens modality were received for 107,094 rigid and soft lens fits of which 88,392 were for soft lens daily wear (DW) and 7470 were for soft lens EW. Overall, EW represents 7.8% of all soft lens fits, ranging from 0.6% in Malaysia to 27% Norway. Compared with DW fittings, EW fittings can be characterized as follows: older age (32.7 \u00b1 13.6 vs. 29.4 \u00b1 12.0 years for DW); males are over\u2010represented; greater proportion of refits; 72% silicone hydrogel; higher proportion of presbyopia and spherical designs; and higher proportion of monthly lens replacement. Of those wearing EW lenses, 80% use multipurpose solutions, whereas 9% do not use any care system. Between 1997 and 1999, the rate of EW prescribing decreased from 5 to 1% of all soft lens fits; it increased to a peak of 12% in 2006, and settled back to 8% by 2010.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions.<\/jats:title>\n                    <jats:p>EW prescribing has failed to break through the \u201cglass ceiling\u201d of 15% and is unlikely to become a mainstream lens wearing modality until the already low risks of ocular complications can be reduced to be equivalent to that for DW.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1097\/opx.0b013e31823ee077","type":"journal-article","created":{"date-parts":[[2011,12,16]],"date-time":"2011-12-16T07:33:12Z","timestamp":1324020792000},"page":"122-129","source":"Crossref","is-referenced-by-count":19,"title":["International Survey of Contact Lens Prescribing for Extended Wear"],"prefix":"10.1002","volume":"89","author":[{"given":"Nathan","family":"Efron","sequence":"first","affiliation":[{"name":"Institute of Health and Biomedical Innovation and School of Optometry Queensland University of Technology Kelvin Grove Queensland Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philip B.","family":"Morgan","sequence":"additional","affiliation":[{"name":"Eurolens Research The University of Manchester Manchester United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Craig A.","family":"Woods","sequence":"additional","affiliation":[{"name":"School of Medicine (Optometry) Deakin University Waurn Ponds Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"The International Contact Lens Prescribing Survey Consortium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,2,1]]},"reference":[{"key":"e_1_2_8_2_2","first-page":"266","volume-title":"Contact Lens Practice","author":"Brennan NA","year":"2010"},{"key":"e_1_2_8_3_2","first-page":"342","article-title":"Developing hydrophilic lenses for continuous wear","volume":"55","author":"De Carle J","year":"1972","journal-title":"Aust J Optom"},{"key":"e_1_2_8_4_2","first-page":"38","article-title":"Oxygen permeability and physical fitting considerations in hydrophilic contact lens wear","volume":"19","author":"De Carle J","year":"1975","journal-title":"Contacto"},{"key":"e_1_2_8_5_2","doi-asserted-by":"crossref","first-page":"1963","DOI":"10.1001\/archopht.1981.03930020839004","article-title":"Extended\u2010wear contact lenses for myopic correction","volume":"99","author":"Stark WJ","year":"1981","journal-title":"Arch Ophthalmol"},{"key":"e_1_2_8_6_2","first-page":"191","article-title":"Disposable hydrogel contact lenses for extended wear","volume":"14","author":"Donshik P","year":"1988","journal-title":"CLAO J"},{"issue":"2","key":"e_1_2_8_7_2","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/S0141-7037(89)80086-2","article-title":"Acuvue in independent practice","volume":"12","author":"Woods CA","year":"1989","journal-title":"J Br Contact Lens Assoc"},{"key":"e_1_2_8_8_2","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1016\/0892-8967(91)90068-B","article-title":"Pseudomonas corneal ulcers associated with daily wear of disposable hydrogel contact lenses","volume":"18","author":"Efron N","year":"1991","journal-title":"Int Contact Lens Clin"},{"key":"e_1_2_8_9_2","doi-asserted-by":"crossref","first-page":"773","DOI":"10.1056\/NEJM198909213211201","article-title":"The relative risk of ulcerative keratitis among users of daily\u2010wear and extended\u2010wear soft contact lenses. A case\u2010control study. Microbial Keratitis Study Group","volume":"321","author":"Schein OD","year":"1989","journal-title":"N Engl J Med"},{"key":"e_1_2_8_10_2","doi-asserted-by":"crossref","first-page":"779","DOI":"10.1056\/NEJM198909213211202","article-title":"The incidence of ulcerative keratitis among users of daily\u2010wear and extended\u2010wear soft contact lenses","volume":"321","author":"Poggio EC","year":"1989","journal-title":"N Engl J Med"},{"key":"e_1_2_8_11_2","first-page":"1161","article-title":"Critical oxygen levels to avoid corneal edema for daily and extended wear contact lenses","volume":"25","author":"Holden BA","year":"1984","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"e_1_2_8_12_2","first-page":"218","article-title":"Corneal swelling response to contact lenses worn under extended wear conditions","volume":"24","author":"Holden BA","year":"1983","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"e_1_2_8_13_2","first-page":"223","article-title":"Models of oxygen performance for the static, dynamic and closed lid wear of hydrogel contact lenses","volume":"64","author":"Efron N","year":"1981","journal-title":"Aust J Optom"},{"key":"e_1_2_8_14_2","doi-asserted-by":"crossref","first-page":"328","DOI":"10.1097\/OPX.0b013e31804375ed","article-title":"Oxygen permeability and water content of silicone hydrogel contact lens materials","volume":"84","author":"Efron N","year":"2007","journal-title":"Optom Vis Sci"},{"key":"e_1_2_8_15_2","first-page":"2","article-title":"Current Australian contact lens practice","volume":"68","author":"Swarbrick H","year":"1985","journal-title":"Aust J Optom"},{"key":"e_1_2_8_16_2","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1111\/j.1444-0938.1989.tb03070.x","article-title":"Contact lens practice in Australia 1987\u20131988","volume":"72","author":"Holden BA","year":"1989","journal-title":"Clin Exp Optom"},{"key":"e_1_2_8_17_2","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1111\/j.1444-0938.1991.tb04611.x","article-title":"Contact lens practice in Australia 1988\u20131989","volume":"74","author":"Sweeney DF","year":"1991","journal-title":"Clin Exp Optom"},{"key":"e_1_2_8_18_2","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1016\/j.clae.2006.02.008","article-title":"A decade of contact lens prescribing trends in the United Kingdom (1996\u20132005)","volume":"29","author":"Morgan PB","year":"2006","journal-title":"Cont Lens Anterior Eye"},{"key":"e_1_2_8_19_2","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1080\/01621459.1927.10502953","article-title":"Probable inference, the law of succession, and statistical inference","volume":"22","author":"Wilson EB","year":"1927","journal-title":"J Am Stat Assoc"},{"key":"e_1_2_8_20_2","doi-asserted-by":"crossref","first-page":"857","DOI":"10.1002\/(SICI)1097-0258(19980430)17:8<857::AID-SIM777>3.0.CO;2-E","article-title":"Two\u2010sided confidence intervals for the single proportion: comparison of seven methods","volume":"17","author":"Newcombe RG","year":"1998","journal-title":"Stat Med"},{"key":"e_1_2_8_21_2","unstructured":"BarrJT MackCJ. Contact lenses yesterday today and the best yet to come.Contact Lens Spectrum2011. Available at:http:\/\/www.clspectrum.com\/article.aspx?article=105076. Accessed October 20 2011."},{"key":"e_1_2_8_22_2","doi-asserted-by":"crossref","first-page":"430","DOI":"10.1136\/bjo.2004.052688","article-title":"Incidence of keratitis of varying severity among contact lens wearers","volume":"89","author":"Morgan PB","year":"2005","journal-title":"Br J Ophthalmol"},{"key":"e_1_2_8_23_2","doi-asserted-by":"crossref","first-page":"1655","DOI":"10.1016\/j.ophtha.2008.04.002","article-title":"The incidence of contact lens\u2010related microbial keratitis in Australia","volume":"115","author":"Stapleton F","year":"2008","journal-title":"Ophthalmology"},{"key":"e_1_2_8_24_2","first-page":"14","volume-title":"Driving Up Participation: The Challenge for Sport. 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Accessed September 13 2011."},{"key":"e_1_2_8_26_2","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1097\/00006324-200102000-00009","article-title":"Hypoxic effects on the anterior eye of high\u2010Dk soft contact lens wearers are negligible","volume":"78","author":"Covey M","year":"2001","journal-title":"Optom Vis Sci"},{"key":"e_1_2_8_27_2","first-page":"93","article-title":"Oxygen levels beneath the closed eyelid","volume":"18","author":"Efron N","year":"1979","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"e_1_2_8_28_2","doi-asserted-by":"crossref","first-page":"164","DOI":"10.1097\/00006324-199603000-00007","article-title":"Oxygen transmissibility at various locations in hydrogel toric prism\u2010ballasted contact lenses","volume":"73","author":"Eghbali F","year":"1996","journal-title":"Optom Vis Sci"},{"key":"e_1_2_8_29_2","volume-title":"The ACLM Contact Lens Year Book 2010","author":"Kerr C","year":"2010"},{"key":"e_1_2_8_30_2","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1097\/OPX.0b013e3181ca32dc","article-title":"Compliance with contact lens replacement in Canada and the United States","volume":"87","author":"Dumbleton K","year":"2010","journal-title":"Optom Vis Sci"},{"key":"e_1_2_8_31_2","doi-asserted-by":"crossref","first-page":"2040","DOI":"10.1128\/JCM.00575-09","article-title":"Resistance of Acanthamoeba cysts to disinfection in multiple contact lens solutions","volume":"47","author":"Johnston SP","year":"2009","journal-title":"J Clin Microbiol"}],"container-title":["Optometry and Vision Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1097\/OPX.0b013e31823ee077","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1097\/OPX.0b013e31823ee077","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1097\/OPX.0b013e31823ee077","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T06:29:06Z","timestamp":1774938546000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1097\/OPX.0b013e31823ee077"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,2]]},"references-count":30,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2012,2]]}},"alternative-id":["10.1097\/OPX.0b013e31823ee077"],"URL":"https:\/\/doi.org\/10.1097\/opx.0b013e31823ee077","archive":["Portico"],"relation":{},"ISSN":["1040-5488","1538-9235"],"issn-type":[{"value":"1040-5488","type":"print"},{"value":"1538-9235","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,2]]}}}