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Lack of spatial remapping of the visual field surrounding a monocular scotoma.
- Source :
-
Clinical & Experimental Optometry . Jan2012, Vol. 95 Issue 1, p109-112. 4p. 1 Diagram, 3 Charts. - Publication Year :
- 2012
-
Abstract
- Background: Changes in cortical receptive fields following deafferentation raise the question of whether interruption of optic nerve fibres engenders spatial distortion in the region bordering the resulting scotoma. Methods: The regularity and uniformity of the spatial metric surrounding a monocular Bjerrum scotoma were studied in both the affected and unaffected eyes of a glaucoma patient, using rigorous psychometric measurements and Amsler grid observations. Results: No expansion of distances towards the edge of the scotoma was found; however, such a change occurs at the border of the normal blind spot, though not binocularly and not in the corresponding field of the other eye. Conclusion: The findings argue against cortical reorganisation following monocular retinal deafferentation in the adult. [ABSTRACT FROM AUTHOR]
- Subjects :
- *OPTIC nerve
*SCOTOMA
*GLAUCOMA
*OPTIC disc
*EYE
*PATIENTS
Subjects
Details
- Language :
- English
- ISSN :
- 08164622
- Volume :
- 95
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Clinical & Experimental Optometry
- Publication Type :
- Academic Journal
- Accession number :
- 69973263
- Full Text :
- https://doi.org/10.1111/j.1444-0938.2011.00627.x