Effectiveness of visual and acoustic biofeedback eccentric viewing training in conjunction with home exercises on visual function: a retrospective observational review. 2023

Natalia Kelly, and Meri Vukicevic, and Konstandina Koklanis

The aim of this study is to evaluate the effectiveness of an eccentric viewing training program that combines biofeedback training using micro-perimetry with home exercises on multiple visual function parameters and to explore potential relationships between post-treatment visual function parameters. A retrospective observational review of 27 participants who underwent the training program was performed. Eligible participants were diagnosed with bilateral central scotomas secondary to age-related macular degeneration. All participants undertook up to 15 visual and acoustic biofeedback training sessions and were required to partake in traditional home exercises between sessions. The biofeedback training was conducted in the better eye using the Macular Integrity Assessment microperimeter (MAIA). Distance and near acuity, contrast sensitivity and fixation stability quantified by the P1 and P2 values and the 63% and 95% bivariate contour ellipse area (BCEA) before and after the rehabilitation program were recorded. Significant improvement was noted post-training for distance visual acuity (t(26) = 4938 p = .000), near visual acuity (Z = -4.461 p = .000), contrast sensitivity (Z = -3.647 p = .000) and fixation stability for all measures, including P1 (t(26) = -9.490 p = .000), P2 (t(26) = -7.338 p  = 0.000), 63% BCEA (Z = 3.569 p = .000) and 95% BCEA (t(26) = 4.687 p = .000). Significant medium-to-large correlations were also found between most visual function variables. Visual and acoustic biofeedback in conjunction with home exercises has the potential to improve visual function parameters in patients with age-related macular degeneration and irreversible central vision loss.

UI MeSH Term Description Entries
D008268 Macular Degeneration Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms. Maculopathy,Maculopathy, Age-Related,Age-Related Macular Degeneration,Age-Related Maculopathies,Age-Related Maculopathy,Macular Degeneration, Age-Related,Macular Dystrophy,Maculopathies, Age-Related,Age Related Macular Degeneration,Age Related Maculopathies,Age Related Maculopathy,Age-Related Macular Degenerations,Degeneration, Macular,Dystrophy, Macular,Macular Degeneration, Age Related,Macular Degenerations,Macular Dystrophies,Maculopathies,Maculopathy, Age Related
D005403 Fixation, Ocular Positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye. Focusing, Ocular,Ocular Fixation,Eye Gaze,Eye Gazes,Gaze, Eye,Gazes, Eye,Ocular Focusing
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000162 Acoustics The branch of physics that deals with sound and sound waves. In medicine it is often applied in procedures in speech and hearing studies. With regard to the environment, it refers to the characteristics of a room, auditorium, theatre, building, etc. that determines the audibility or fidelity of sounds in it. (From Random House Unabridged Dictionary, 2d ed) Acoustic
D001676 Biofeedback, Psychology The therapy technique of providing the status of one's own AUTONOMIC NERVOUS SYSTEM function (e.g., skin temperature, heartbeats, brain waves) as visual or auditory feedback in order to self-control related conditions (e.g., hypertension, migraine headaches). Biofeedback (Psychology),Bogus Physiological Feedback,False Physiological Feedback,Feedback, Psychophysiologic,Biofeedback,Feedback, Psychophysiological,Myofeedback,Psychophysiologic Feedback,Biofeedbacks,Biofeedbacks (Psychology),Biofeedbacks, Psychology,Bogus Physiological Feedbacks,False Physiological Feedbacks,Feedback, Bogus Physiological,Feedback, False Physiological,Feedbacks, Bogus Physiological,Feedbacks, False Physiological,Myofeedbacks,Physiological Feedback, Bogus,Physiological Feedback, False,Physiological Feedbacks, Bogus,Physiological Feedbacks, False,Psychology Biofeedback,Psychology Biofeedbacks
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D015354 Vision, Low Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.). Vision, Reduced,Vision, Subnormal,Vision, Diminished,Diminished Vision,Low Vision,Reduced Vision,Subnormal Vision
D058609 Visual Field Tests Method of measuring and mapping the scope of vision, from central to peripheral of each eye. Automated Perimetry Exam,Campimetry,Perimetry,Tangent Screen Exam,Visual Field Exam,Automated Perimetry Exams,Campimetries,Exam, Automated Perimetry,Exam, Tangent Screen,Exam, Visual Field,Exams, Automated Perimetry,Exams, Tangent Screen,Exams, Visual Field,Field Exam, Visual,Field Exams, Visual,Field Test, Visual,Field Tests, Visual,Perimetries,Perimetry Exam, Automated,Perimetry Exams, Automated,Screen Exam, Tangent,Screen Exams, Tangent,Tangent Screen Exams,Test, Visual Field,Tests, Visual Field,Visual Field Exams,Visual Field Test

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