Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration.

Raymond Beirne, Ruth Hogg, Michael Stevenson, Roger Anderson, Usha Chakravarthy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Purpose: To investigate the relationship between baseline psychophysical measures ofvisual function in age-related maculopathy (ARM) and the subsequent development ofadvanced visual loss from age-related macular degeneration.Methods: 36 participants (aged 52-85yrs) with early ARM and good acuity (≤ 0.3 logMAR) inthe study eye and advanced AMD in the fellow eye underwent a battery of psychophysicaltests at baseline examination (logMAR acuity, Pelli-Robson contrast sensitivity, photopicand scotopic interferometric acuity, achromatic and short-wavelength-sensitive (SWS)resolution acuity). Stereoscopic colour fundus photographs were graded using theWisconsin Age-Related Maculopathy Grading System (WARMGS) and features of ARMwere combined to assign a severity stage from 0 to 5 using the methods described bythe Rotterdam Eye Study. Participants clinical records were examined for a period ofup to 5 years from baseline, with participants being divided into two groups based onwhether or not the study eye lost a significant amount of visual acuity (greater than 3lines of logMAR acuity) in this follow-up period.Results: 8 participants suffered a significant drop in visual acuity during follow-up, while26 participants did not. There was no significant difference in age (M=73.4 vs 71.9yrs;p=0.63) or follow-up time (M=34.2 vs 28.5mths; p=0.34) between these two groups.Achromatic and SWS resolution acuity were both significantly reduced at baseline inthose subjects who developed a significant loss in visual acuity compared to those whodid not (p
LanguageEnglish
Title of host publicationUnknown Host Publication
Pages2223-2301
Volume49
Publication statusPublished - 2008

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Macular Degeneration
Visual Acuity
Contrast Sensitivity
Color

Cite this

Beirne, R., Hogg, R., Stevenson, M., Anderson, R., & Chakravarthy, U. (2008). Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration. In Unknown Host Publication (Vol. 49, pp. 2223-2301)
Beirne, Raymond ; Hogg, Ruth ; Stevenson, Michael ; Anderson, Roger ; Chakravarthy, Usha. / Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration. Unknown Host Publication. Vol. 49 2008. pp. 2223-2301
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Beirne, R, Hogg, R, Stevenson, M, Anderson, R & Chakravarthy, U 2008, Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration. in Unknown Host Publication. vol. 49, pp. 2223-2301.

Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration. / Beirne, Raymond; Hogg, Ruth; Stevenson, Michael; Anderson, Roger; Chakravarthy, Usha.

Unknown Host Publication. Vol. 49 2008. p. 2223-2301.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration.

AU - Beirne, Raymond

AU - Hogg, Ruth

AU - Stevenson, Michael

AU - Anderson, Roger

AU - Chakravarthy, Usha

PY - 2008

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N2 - Purpose: To investigate the relationship between baseline psychophysical measures ofvisual function in age-related maculopathy (ARM) and the subsequent development ofadvanced visual loss from age-related macular degeneration.Methods: 36 participants (aged 52-85yrs) with early ARM and good acuity (≤ 0.3 logMAR) inthe study eye and advanced AMD in the fellow eye underwent a battery of psychophysicaltests at baseline examination (logMAR acuity, Pelli-Robson contrast sensitivity, photopicand scotopic interferometric acuity, achromatic and short-wavelength-sensitive (SWS)resolution acuity). Stereoscopic colour fundus photographs were graded using theWisconsin Age-Related Maculopathy Grading System (WARMGS) and features of ARMwere combined to assign a severity stage from 0 to 5 using the methods described bythe Rotterdam Eye Study. Participants clinical records were examined for a period ofup to 5 years from baseline, with participants being divided into two groups based onwhether or not the study eye lost a significant amount of visual acuity (greater than 3lines of logMAR acuity) in this follow-up period.Results: 8 participants suffered a significant drop in visual acuity during follow-up, while26 participants did not. There was no significant difference in age (M=73.4 vs 71.9yrs;p=0.63) or follow-up time (M=34.2 vs 28.5mths; p=0.34) between these two groups.Achromatic and SWS resolution acuity were both significantly reduced at baseline inthose subjects who developed a significant loss in visual acuity compared to those whodid not (p

AB - Purpose: To investigate the relationship between baseline psychophysical measures ofvisual function in age-related maculopathy (ARM) and the subsequent development ofadvanced visual loss from age-related macular degeneration.Methods: 36 participants (aged 52-85yrs) with early ARM and good acuity (≤ 0.3 logMAR) inthe study eye and advanced AMD in the fellow eye underwent a battery of psychophysicaltests at baseline examination (logMAR acuity, Pelli-Robson contrast sensitivity, photopicand scotopic interferometric acuity, achromatic and short-wavelength-sensitive (SWS)resolution acuity). Stereoscopic colour fundus photographs were graded using theWisconsin Age-Related Maculopathy Grading System (WARMGS) and features of ARMwere combined to assign a severity stage from 0 to 5 using the methods described bythe Rotterdam Eye Study. Participants clinical records were examined for a period ofup to 5 years from baseline, with participants being divided into two groups based onwhether or not the study eye lost a significant amount of visual acuity (greater than 3lines of logMAR acuity) in this follow-up period.Results: 8 participants suffered a significant drop in visual acuity during follow-up, while26 participants did not. There was no significant difference in age (M=73.4 vs 71.9yrs;p=0.63) or follow-up time (M=34.2 vs 28.5mths; p=0.34) between these two groups.Achromatic and SWS resolution acuity were both significantly reduced at baseline inthose subjects who developed a significant loss in visual acuity compared to those whodid not (p

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BT - Unknown Host Publication

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Beirne R, Hogg R, Stevenson M, Anderson R, Chakravarthy U. Visual function, age-related maculopathy stage and the subsequent development of age-related macular degeneration. In Unknown Host Publication. Vol. 49. 2008. p. 2223-2301