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1. www.ophthalmologyreview.org › articles › visualVisual Fields: Introduction - Ophthalmology Review

   www.ophthalmologyreview.org › articles › visual

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   Dec 12, 2015 · The "hill" or "island" of vision is a visual description of how our vision and visual fields work. We don't have high-definition vision in all areas of our visual field - in fact, there's only a very narrow portion of our visual field that provides high-resolution images. This is represented by the apex of the hill/island. Another way to ...

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2. pn.bmj.com › content › 15/5/374How to interpret visual fields - Practical Neurology

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   These ‘stacked isopters’ would represent a hill vision that is too steep to be physiological, that is, the close ‘contours’ here appear like a cliff drop. Clinical examination with a red target confirmed the presence of a tubular field ( figure 8 ), with the size of visual field remaining unchanged when examined at 1 and 4 m.

   • Author: Sui H Wong, Gordon T Plant

   • Publish Year: 2015

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4. www.reviewofoptometry.com › article › track-the-hillTrack the Hill of Vision - Review of Optometry

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   May 15, 2020 · The MD is the average, point-wise difference between a given test result and the normal, age-matched reference value. 1 This value is derived from the total deviation plot and indicates the overall depression or elevation of a patient’s hill of vision. For example, a patient with a positive MD value will have a better than normal hill of ...

5. xerte.cardiff.ac.uk › USER-FILES › 17965-C141095411 - Visual Fields - Cardiff University

   xerte.cardiff.ac.uk › USER-FILES › 17965-C1410954

   A visual field defect is any departure from the normal topography of the hill of vision (Fig. 11-1). The history of the recognition of visual field defects is a fascinating one and the interested reader is directed towards a short review by Atchison (1979).4 The first true clinical description of a perimetric technique to examine and quan-tify ...

6. tvst.arvojournals.org › articleMicroperimetry Hill of Vision and Volumetric Measures of ...

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   These drawbacks are overcome by consideration of a “hill of vision,” a concept first introduced by Traquair in 1927. 2 A volumetric measure of the hill of vision, which is a measure of the “total amount” of sensitivity within a given visual field area, may be calculated in physical units of decibel-steradians 3,4 or decibel-degrees ...

   • Author: Amandeep Singh Josan, Thomas M W Buckley, Laura J Wood, Jasleen K Jolly, Jasmina Cehajic-Kapetanovic...

   • Publish Year: 2021

7. www.ncbi.nlm.nih.gov › pmc › articlesVisual fields interpretation in glaucoma: a focus on static ...

   www.ncbi.nlm.nih.gov › pmc › articles

   Jun 4, 2013 · An irregular hill of vision revealed by a high PSD value may be due to low patient reliability, actual VF defect, or both. By removing patient fatigability factors (correcting the PSD by subtracting SF value), the true shape of the hill of vision is appreciated; this is the corrected pattern standard deviation (CPSD) (Figure (Figure10 10).

8. People also ask

   What is the 'hill of vision'?

   • What is the "hill of vision?" The "hill" or "island" of vision is a visual description of how our vision and visual fields work. We don't have high-definition vision in all areas of our visual field - in fact, there's only a very narrow portion of our visual field that provides high-resolution images.

   Visual Fields: Introduction - Ophthalmology Review

   www.ophthalmologyreview.org/articles/visual-fields-introduction

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   What is the visual field of the right eye?

   • Diagram of the visual field for the right eye. The three regions of the field are the central field (0 to 24 or 30 degrees), the peripheral field (30 to 60 degrees), and the temporal crescent. Cortical representation of the central visual field. The central 30 to 40 degrees of the visual field occupies 83% of the striate cortex.

   Visual fields interpretation in glaucoma: a focus on static automated

   www.ncbi.nlm.nih.gov/pmc/articles/PMC3678209/

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   What is a normal field of vision?

   • The normal field of vision extends to approximately 60° nasally, 90° temporally, 60° superiorly and 70° inferiorly. The blind spot indicates the location of the optic nerve head—an area with no photoreceptors—in the temporal part of the visual field. Normal hill of vision.

   How to interpret visual fields - Practical Neurology

   pn.bmj.com/content/15/5/374

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   What is the extent of a visual field?

   • The extent of the visual field refers to how far you can move a target away from fixation and still be able to see it. For example, large and bright targets can be seen further in the periphery of our vision than small and dim targets. When this is plotted out in 3 dimensions, the diagram you see above forms.

   Visual Fields: Introduction - Ophthalmology Review

   www.ophthalmologyreview.org/articles/visual-fields-introduction

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   Why are visual fields important in ophthalmology?

   • The study and interpretation of visual fields is a very important part of ophthalmology and used for many different conditions, ranging from glaucoma (its most common use) to localizing neurological defects, and even to evaluate some retinal diseases.

   Visual Fields: Introduction - Ophthalmology Review

   www.ophthalmologyreview.org/articles/visual-fields-introduction

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   Can a lesion in the pathway cause a visual field defect?

   • Lesions in the pathway cause a variety of visual field defects. The type of field defect can help localize where the lesion is located (see figure). A lesion in the optic nerve of one eye causes partial or complete loss of vision in the same eye, with an intact field of vision in other eye.

   Visual field - Wikipedia

   en.wikipedia.org/wiki/Visual_field

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9. en.wikipedia.org › wiki › Visual_fieldVisual field - Wikipedia

   en.wikipedia.org › wiki › Visual_field

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   Tubular vision: Since macular fibers are the most resistant to glaucomatous damage, central vision remains unaffected until the end stages of glaucoma. It results in tubular vision, or tunnel vision , by the loss of peripheral vision with retention of central vision, resulting in a constricted circular tunnel-like field of vision.