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      A Strategy for Averaged Estimates of Visual Field Threshold : Spark

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          Abstract

          <p class="first" id="d4106296e59">The purpose of this work is to design a rapid perimetric strategy to provide averaged results. </p>

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          Mapping the visual field to the optic disc in normal tension glaucoma eyes11The authors have no proprietary interest in the development or marketing of any product or instrument mentioned in this article.

          David Garway-Heath, Roger A. Hitchings, Frederick W. Fitzke … (2000)
          Article 0 comments Cited 42 times – based on 0 reviews     Review now
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            Changes in differential threshold in patients with glaucoma during prolonged perimetry.

            A Heijl, S M Drance (1983)
            Patients with chronic open-angle glaucoma and others suspected of having glaucoma were subjected to continuous contrast threshold measurement by automatic and manual perimetric techniques. The results show that an increase of contrast threshold over time is a frequent finding in glaucoma patients and that this increment can be large, especially at points close to existing field defects. it is reproducible and independent of background illumination and can be demonstrated with both automatic and manual testing, but it is larger in the automatic than in the manual mode of testing. The results may have some important implications for visual field testing in glaucoma.
            Article 0 comments Cited 15 times – based on 0 reviews     Review now
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              Quantification of interpoint topographic correlations of threshold values in glaucomatous visual fields.

              Augusto Azuara-Blanco, David Manuel Folgado-de la Rosa, Maximino Abraldes … (2002)
              The authors sought to quantify neighboring and distant interpoint correlations of threshold values within the visual field in patients with glaucoma. Visual fields of patients with confirmed or suspected glaucoma were analyzed (n = 255). One eye per patient was included. Patients were examined using the 32 program of the Octopus 1-2-3. Linear regression analysis among each of the locations and the rest of the points of the visual field was performed, and the correlation coefficient was calculated. The degree of correlation was categorized as high (r(2) > 0.66), moderate (0.66 > or = r(2) > 0.33), or low (r(2) < or = 0.33). The standard error of threshold estimation was calculated. Most locations of the visual field had high and moderate correlations with neighboring points and with distant locations corresponding to the same nerve fiber bundle. Locations of the visual field had low correlations with those of the opposite hemifield, with the exception of locations temporal to the blind spot. The standard error of threshold estimation increased from 0.6 to 0.9 dB with an r(2) reduction of 0.1. Locations of the visual field have highest interpoint correlation with neighboring points and with distant points in areas corresponding to the distribution of the retinal nerve fiber layer. The quantification of interpoint correlations may be useful in the design and interpretation of visual field tests in patients with glaucoma.
              Article 0 comments Cited 9 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Title: Journal of Glaucoma
                Abbreviated Title: Journal of Glaucoma
                Publisher: Ovid Technologies (Wolters Kluwer Health)
                ISSN (Print): 1057-0829
                Publication date Created: 2013
                Publication date (Print): 2013
                Volume: 22
                Issue: 4
                Pages: 284-289
                Article
                DOI: 10.1097/IJG.0b013e318239c1a3
                PubMed ID: 23059476
                SO-VID: f2f2de6a-44b4-4875-92da-2133cc82acd5
                Copyright © © 2013
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