International contact lens clinic (New York, N.Y.)最新文献_第5页

Corneal thickness mapping by topographical ultrasonic pachometry 用地形超声测厚法测绘角膜厚度

International contact lens clinic (New York, N.Y.) Pub Date : 2000-01-01 Epub Date: 2001-10-17 DOI: 10.1016/S0892-8967(01)00051-7

M.A Parafita, J.M González-Meijome, J.A Dı́az-Rey, J González-Pérez, E Yebra-Pimentel

{"title":"Corneal thickness mapping by topographical ultrasonic pachometry","authors":"M.A Parafita, J.M González-Meijome, J.A Dı́az-Rey, J González-Pérez, E Yebra-Pimentel","doi":"10.1016/S0892-8967(01)00051-7","DOIUrl":"10.1016/S0892-8967(01)00051-7","url":null,"abstract":"<div><p>Ultrasonic measurements of corneal thickness (CT) more than 25 points from a 6-mm diameter area of the central cornea were used to create computerized CT maps. Two subjects were evaluated in different sessions by topographical ultrasonic pachometry. The thickness values were stored as a two-dimensional array z(x,y), whose indices refer to positional coordinates x (in the nasal–temporal direction) and y (in the superior–inferior direction). Pachometric maps were then constructed by plotting thickness values against horizontal and vertical (x,y) position coordinates. Assisted computer interpolation between data points provides color-coded continuous pachometric maps. Data were processed and analyzed separately and an average map was also obtained for each subject. Goodness of fit for the average maps measured by coefficient of determination (r<sup>2</sup>) was very high in both examples (r<sup>2</sup> = 0.98 and r<sup>2</sup><span> = 0.99). Fitting standard error was 5.42 μm and 4.17 μm, respectively. Also, points not measured in the ultrasonic evaluation could be automatically predicted from the fitted model. The technique described provides an affordable and reliable method for thickness mapping of full corneal tissue, enabling accurate anatomical evaluation of the changes induced in the cornea by refractive surgery procedures, contact lenses, or disease.</span></p></div>","PeriodicalId":80286,"journal":{"name":"International contact lens clinic (New York, N.Y.)","volume":"27 1","pages":"Pages 12-21"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0892-8967(01)00051-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56182210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Complexity of contact lens fitting following penetrating keratoplasty 穿透性角膜移植术后隐形眼镜配戴的复杂性

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(01)00041-4

Sharon K Ho (OD) , Lilian Andaya (COA) , Barry A Weissman PhD (OD)

{"title":"Complexity of contact lens fitting following penetrating keratoplasty","authors":"Sharon K Ho (OD) , Lilian Andaya (COA) , Barry A Weissman PhD (OD)","doi":"10.1016/S0892-8967(01)00041-4","DOIUrl":"10.1016/S0892-8967(01)00041-4","url":null,"abstract":"<div><p>The aim of this study was to quantify the complexity of contact lens (CL) fitting following penetrating keratoplasty (PKP).</p><p><span>The CL care of 40 eyes following PKP was analyzed retrospectively and compared to that of 40 age-matched and gender-matched controls. We evaluated the numbers of diagnostic and ordered rigid gas permeable<span> (RGP) CLs, office visits for 6-month follow-up, best spectacle and RGP CL-corrected logMar visual acuities (VAs), and RGP CL success and complication rates. Post-PKP corneas required more diagnostic CLs (</span></span><em>p</em> = 0.009), ordered CLs (<em>p</em> = 0.0003), and office visits (<em>p</em> = 0.001) than did controls. Corrected logMAR VAs post-PKP improved from 0.31 ± 0.31 (mean ± SD) with spectacles (20/41) to 0.076 ± 0.19 (20/24) with RGP CLs (<em>p</em> < 0.0001). Controls logMAR spectacle and CL-corrected VAs were 0.0043 ± 0.12 (20/20) and −0.023 ± 0.058 (20/19), respectively (no significant difference, <em>p</em> = 0.096). Ninety percent of PKP eyes and 100% of controls were successful, and 30% of PKP and 12.5% controls had CL-related complications; these differences did not reach statistical significance.</p><p>Post-PKP eyes require more diagnostic CLs, ordered CLs, and professional office visits. They also have greater improvement of VAs with RGPs than normals compared to spectacles. CL wear post-PKP does not statistically increase the rate of CL complications or alter the success rate of CL wear.</p></div>","PeriodicalId":80286,"journal":{"name":"International contact lens clinic (New York, N.Y.)","volume":"26 6","pages":"Pages 163-167"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0892-8967(01)00041-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56181660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Time flies! 时间过得真快啊!

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(01)00050-5

Gerald E Lowther PhD (OD, co-editor)

引用次数: 0

Four views of hypoxia… , but which is best? part 2. using air as an ideal reference 缺氧的四种观点，但哪种是最好的?第2部分。以空气为理想参考

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(00)00036-5

Richard M Hill PhD (OD), Contributing Editor

引用次数: 0

Accuracy and reproducibility of one-day disposable contact lenses 一次性隐形眼镜的准确性和可重复性

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(01)00043-8

Nathan Efron DSc , Philip Morgan PhD , Sarah Morgan BSc ((Hons))

引用次数: 8

Index 指数

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(01)00049-9

引用次数: 0

The incidence of glassy corneal striae 玻璃状角膜条纹的发生率

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(00)00041-9

Gregory Y Kame (OD, FAAO), Justin T Abo (OD), Rodger T Kame (OD, FAAO), Timothy B Edrington MS (OD, FAAO), John P Herman (OD, FAAO), Lynn K Matsuda (OD, FAAO), Paul De Land PhD

{"title":"The incidence of glassy corneal striae","authors":"Gregory Y Kame (OD, FAAO), Justin T Abo (OD), Rodger T Kame (OD, FAAO), Timothy B Edrington MS (OD, FAAO), John P Herman (OD, FAAO), Lynn K Matsuda (OD, FAAO), Paul De Land PhD","doi":"10.1016/S0892-8967(00)00041-9","DOIUrl":"10.1016/S0892-8967(00)00041-9","url":null,"abstract":"<div><p><span>Glassy corneal striae (GCS) are fine colorless lines that run parallel to each other in a vertical or near-vertical orientation in the central cornea near the level of Descemet’s membrane. It is postulated that GCS “brace” the stroma, thus adding stability to the cornea. The purpose of this study was to determine the incidence of GCS in patients with “normal” corneas and to determine whether a correlation exists between the presence of GCS and gender, age, iris color, or corneal </span>astigmatism<span> (toricity). Modified marginal retro-illumination biomicroscopy was used to evaluate the cornea for the presence of GCS. One hundred thirteen “normal” right corneas were evaluated for the presence of GCS. A total of 85.8% (97/113) of subjects in our study sample exhibited GCS. However, we were unable to establish a statistically significant correlation between the presence of GCS and gender, age, iris color, or corneal toricity.</span></p></div>","PeriodicalId":80286,"journal":{"name":"International contact lens clinic (New York, N.Y.)","volume":"26 6","pages":"Pages 147-151"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0892-8967(00)00041-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56180944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Discontinuation of contact lens wear: a survey 停用隐形眼镜:一项调查

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(01)00040-2

Nicola Pritchard BAppSc ((Optom) MCOptom, FAAO) , Desmond Fonn (Dip Optom MOptom, FAAO) , Daniel Brazeau (OD)

{"title":"Discontinuation of contact lens wear: a survey","authors":"Nicola Pritchard BAppSc ((Optom) MCOptom, FAAO) , Desmond Fonn (Dip Optom MOptom, FAAO) , Daniel Brazeau (OD)","doi":"10.1016/S0892-8967(01)00040-2","DOIUrl":"10.1016/S0892-8967(01)00040-2","url":null,"abstract":"<div><p>Discontinuation from contact lens wear has been cited as a contributing factor to the lack of growth of the contact lens market in North America. To determine the reasons and extent of abandonment from contact lens wear among patients from optometric practices, 4415 questionnaires were randomly mailed to patients from 16 practices in Quebec, Canada, and were returned as anonymous responses to the Centre for Contact Lens Research in Waterloo. Thirty-three percent (n = 1444) of the surveys were returned. After 5 ± 6 years of lens wear, 34% of patients had discontinued lens wear at least once. Of the patients who discontinued, 77% resumed wear and 48% of those discontinued a second time. Those who had discontinued were fitted at an older age (by approximately 2 years), were in the professional/health care/management occupation sector, and had a slightly lower myopic prescription. Before discontinuation, the wearing time of this group was approximately 1 day/week less than those continuing to wear lenses. Of the patients who had discontinued, 49% had been refitted at least once, and the primary reason for refitting was discomfort. The primary reasons for abandonment were discomfort, dryness, and red eyes. Improved comfort and relief of dryness were the primary factors that would improve contact lens wear for the group that had discontinued. Practitioners may be able to target specific patient groups with remedial measures to improve contact lens-wearing success.</p></div>","PeriodicalId":80286,"journal":{"name":"International contact lens clinic (New York, N.Y.)","volume":"26 6","pages":"Pages 157-162"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0892-8967(01)00040-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56181533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 266

Empirical fitting with polycon II lenses polyconii透镜的经验拟合

International contact lens clinic (New York, N.Y.) Pub Date : 1999-11-01 Epub Date: 2001-05-24 DOI: 10.1016/S0892-8967(00)00043-2

Herman Kwong (OD) , Ralph Gundel (OD, FAAO)

引用次数: 2

How times have changed 时代是如何变化的

International contact lens clinic (New York, N.Y.) Pub Date : 1999-09-01 Epub Date: 2001-02-02 DOI: 10.1016/S0892-8967(00)00039-0

Joe B. Goldberg (OD, FAAO)

引用次数: 0