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ERIC Number: EJ914288
Record Type: Journal
Publication Date: 2011-Jan
Pages: 6
Abstractor: ERIC
Reference Count: 15
ISSN: ISSN-0145-482X
Subjective Perception of Visual Distortions or Scotomas in Individuals with Retinitis Pigmentosa
Wittich, Walter; Watanabe, Donald H.; Kapusta, Michael A.; Overbury, Olga
Journal of Visual Impairment & Blindness, v105 n1 p50-55 Jan 2011
It is often assumed that persons who develop ocular disease have some form of visual experience that makes them aware of their deficits. However, in the case of peripheral field loss or decreasing vision in dim lighting, as in retinitis pigmentosa, for example, symptoms are more obscure and may not be as easily identified by the persons who have them. Only one questionnaire that evaluates functionally relevant visual distortions has been published in a peer-reviewed scientific journal. Arimura and colleagues (2006) correlated perceptual distortions that are associated with the development of a macular hole with scores on their metamorphopsia questionnaire. Arimura et al.'s 10-item measure contains questions that evaluate far distance vision (such as the perception of telephone poles), intermediate distance vision (such as the outline of a television set), and near vision tasks (reading). The goal of administering this questionnaire to individuals with retinitis pigmentosa was to investigate whether these individuals are indeed experiencing visual distortions or scotomas or both, since no studies have yet addressed this question. Given that only a small number of questions were sensitive enough to detect functional effects in central vision among this group of persons with retinitis pigmentosa who had relatively good acuities (better than 20/60 or 6/18), some of the content will need to be revised to make this measure more informative for both clinicians and rehabilitation specialists.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Canada