A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study

Benjamin Stern,1 Elhanan Parnasa,2 Yaara Forer,2 Idit Tessler,2 Joshua M Kruger1 1Department of Ophthalmology, Hadassah Medical Center, Kiryat Hadassah, Jerusalem 91120, Israel; 2Hebrew University-Hadassah School of Medicine, Jerusalem 91120, IsraelCorrespondence: Joshua M Kruger Tel +972508946493Em...

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Autores principales:	Stern B, Parnasa E, Forer Y, Tessler I, Kruger JM
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	automated visual fields static perimetry humphrey visual field analyzer colored filter Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/0c87a914318a4d5c8775ad5e3a99d007
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spelling	oai:doaj.org-article:0c87a914318a4d5c8775ad5e3a99d0072021-12-02T11:34:14ZA Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study1177-5483https://doaj.org/article/0c87a914318a4d5c8775ad5e3a99d0072020-06-01T00:00:00Zhttps://www.dovepress.com/a-novel-method-of-visual-field-assessment-for-patients-with-unilateral-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Benjamin Stern,1 Elhanan Parnasa,2 Yaara Forer,2 Idit Tessler,2 Joshua M Kruger1 1Department of Ophthalmology, Hadassah Medical Center, Kiryat Hadassah, Jerusalem 91120, Israel; 2Hebrew University-Hadassah School of Medicine, Jerusalem 91120, IsraelCorrespondence: Joshua M Kruger Tel +972508946493Email kruger@hadassah.org.ilPurpose: Reliable visual field testing requires the tested eye to be fixated on a central target. This poses a major obstacle for eyes with severe central vision loss. This pilot study assesses whether it may be feasible to examine such patients with a modified method.Methods: A green filter was placed over the fellow eye. A FASTPAC algorithm was used with a red stimulus. The green filter prevented transmission of the red stimuli but allowed visualization of the yellow fixation light. Subjects were tested by both the conventional and the novel method, performed in a randomized order. We compared the reliability indices and also the precision of the two methods.Results: We present results from six patients. The novel method was associated with an 85% reduction in fixation losses (P=0.028) and a 58% reduction in eye motion on gaze tracking (P=0.007). Further, specialized testing in one of the volunteers demonstrated that the novel technique could more precisely define a small zone of preserved peripheral vision (P=0.008).Conclusion: The results of this pilot study suggest that the novel method described may be a feasible strategy for visual field testing in patients with unilateral severe central vision loss.Keywords: automated visual fields, static perimetry, Humphrey visual field analyzer, colored filterStern BParnasa EForer YTessler IKruger JMDove Medical Pressarticleautomated visual fields static perimetry humphrey visual field analyzer colored filterOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 1799-1804 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	automated visual fields static perimetry humphrey visual field analyzer colored filter Ophthalmology RE1-994
spellingShingle	automated visual fields static perimetry humphrey visual field analyzer colored filter Ophthalmology RE1-994 Stern B Parnasa E Forer Y Tessler I Kruger JM A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
description	Benjamin Stern,1 Elhanan Parnasa,2 Yaara Forer,2 Idit Tessler,2 Joshua M Kruger1 1Department of Ophthalmology, Hadassah Medical Center, Kiryat Hadassah, Jerusalem 91120, Israel; 2Hebrew University-Hadassah School of Medicine, Jerusalem 91120, IsraelCorrespondence: Joshua M Kruger Tel +972508946493Email kruger@hadassah.org.ilPurpose: Reliable visual field testing requires the tested eye to be fixated on a central target. This poses a major obstacle for eyes with severe central vision loss. This pilot study assesses whether it may be feasible to examine such patients with a modified method.Methods: A green filter was placed over the fellow eye. A FASTPAC algorithm was used with a red stimulus. The green filter prevented transmission of the red stimuli but allowed visualization of the yellow fixation light. Subjects were tested by both the conventional and the novel method, performed in a randomized order. We compared the reliability indices and also the precision of the two methods.Results: We present results from six patients. The novel method was associated with an 85% reduction in fixation losses (P=0.028) and a 58% reduction in eye motion on gaze tracking (P=0.007). Further, specialized testing in one of the volunteers demonstrated that the novel technique could more precisely define a small zone of preserved peripheral vision (P=0.008).Conclusion: The results of this pilot study suggest that the novel method described may be a feasible strategy for visual field testing in patients with unilateral severe central vision loss.Keywords: automated visual fields, static perimetry, Humphrey visual field analyzer, colored filter
format	article
author	Stern B Parnasa E Forer Y Tessler I Kruger JM
author_facet	Stern B Parnasa E Forer Y Tessler I Kruger JM
author_sort	Stern B
title	A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
title_short	A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
title_full	A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
title_fullStr	A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
title_full_unstemmed	A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study
title_sort	novel method of visual field assessment for patients with unilateral severely limited central vision: a pilot study
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/0c87a914318a4d5c8775ad5e3a99d007
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A Novel Method of Visual Field Assessment for Patients with Unilateral Severely Limited Central Vision: A Pilot Study

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