Use of prisms for vision rehabilitation after macular function loss may impact oculomotor control

Reyes, Sophia V.; Silvestri, Valeria; Amore, Filippo; Markowitz, Samuel N.

doi:10.1016/j.jcjo.2013.03.001

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…[25][26][27] Many rehabilitation technicians use prisms to move the image peripherally, but the effectiveness of this technique remains under discussion. 28,29 Vision stimulation is a technique commonly used in low vision rehabilitation, since it allows the training of PRL in patients with eccentric and/or unstable fixation and impacts retinal cells. According to the residual vision activation theory, visual functions can be partially reactivated and restored because some structures are usually spared damage.…”

Section: Vision Rehabilitation Techniquesmentioning

confidence: 99%

“…Over the last two decades, many vision rehabilitation techniques have been designed and implemented for improving oculomotor control by stabilising fixation, reducing crowding effects and enlarging visual span by relocating the PRL to a more convenient position relative to the scotoma 25–27 . Many rehabilitation technicians use prisms to move the image peripherally, but the effectiveness of this technique remains under discussion 28,29 …”

Section: Introductionmentioning

confidence: 99%

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Biofeedback stimulation in the visually impaired: a systematic review of literature

Silvestri

Turco

Guidobaldi

et al. 2021

Ophthalmic Physiologic Optic

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Background: It is estimated that approximately 1.3 billion people live with some form of distance or near visual impairment. Numerous studies have been carried out to evaluate the effects of biofeedback (BF) and establish if it could be a useful tool in vision rehabilitation for various eye diseases. Objective: This systematic review aimed: 1) to examine the current evidence of BF efficacy for the rehabilitation of the visually impaired and 2) to describe methodological variations used in previous BF studies to provide recommendations for vision rehabilitation interventions. Methods: A systematic review was conducted in the Medline, PubMed, Cochrane Library and Web of Science databases to collect documents published between January 2000 and May 2020. Of the 1,960 studies identified, 43 met the criteria for inclusion. The following information was collected from each study: sample size, control group, any eye disease, apparatus used, frequency and number of sessions of BF, main outcomes of training and whether a follow-up was conducted. The first group included studies published as scientific articles in peer-reviewed journals. The second group included abstracts of studies presented at peer-reviewed conferences. Publications were also grouped according to the eye disease treated. Results: 25 articles and 18 peer-reviewed conference abstracts (PRCAs) were included in this review. BF stimulation is a commonly used technique for the treatment of visual impairment caused by macular disease. Most BF studies evaluate the effect of training on the preferred retinal locus (PRL), particularly with regard to fixation location and stability. Across these studies, participants who received BF intervention improved fixation stability and reading speed. High variability in the number of sessions and the duration of BF training was found. Most studies did not use a control group. Conclusions: The findings of this review present evidence for biofeedback treatment in vision rehabilitation, with improved oculomotor abilities. Currently, it is not possible to formulate evidence-based recommendations for a standard training procedure due to the poor quality of existing randomised controlled trials. High-quality studies are needed to develop standard protocols for a range of eye diseases.

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Section: Vision Rehabilitation Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biofeedback stimulation in the visually impaired: a systematic review of literature

Silvestri

Turco

Guidobaldi

et al. 2021

Ophthalmic Physiologic Optic

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“…11,12 There is evidence of better fixation with prism when used for image translocation towards peripheral retina in AMD. 13 Literature shows a new trend towards intraocular implantation of prisms within the capsular bag after phacoemulsification. 14 Contrary to our results, Smith et al compared three groups for AMD visual rehabilitation.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Prism Spectacles in Patients with Age Related Macular Degeneration: A randomized control trial study

Tanveer¹,

Kiran²,

Hussain³

et al. 2022

pak J Ophthalmol

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Purpose: To compare between the use of prism and the spectacles without prism in improving near vision, distance vision and quality of life in patients with AMD. Study Design: Randomized control trial. Place and Duration of Study: Al-Shifa Trust Eye Hospital, from October 2021 to April 2022. Methods: Eighty-eight patients with AMD were selected and 44 patients were included in intervention group and control group each. Both interventional and control groups underwent Visual acuity (VA) for distance and near. VF-25 questionnaire was filled to evaluate quality of life (VFQoL). After prescribing prisms and simple glasses without prisms, both groups were called for a follow-up after one week and one month. VF-25 questionnaire was filled again. IBM SPSS was used for statistics. Categorical variables were presented by the frequencies and percentages. Continuous variables were presented by mean and standard deviation. Results: There were 63.64% males. Mean age of subjects was 67.28 + 8.0. A repeated measure ANOVA determined that mean VA for distance, near (for single opto-type and continuous text) and quality of life of intervention group and control group increased from pre-intervention to one month (p < .0005), and from pre-intervention to one week (p = <0.001), but not from one week to one month (p = >0.005).Mean improvement in near and distance vision was significant better in intervention group than the control group (p = < 0.001). Conclusion: There was statistically significant improvement in near, distance vision and quality of life with the use of prism in AMD.

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“…15 The mechanism by which image relocation prisms enhance PRL function is by improving fixation stability abilities at the PRL. 16…”

Section: Optimal Eyewearmentioning

confidence: 99%

Rehabilitation of reading skills in patients with age-related macular degeneration

Markowitz

Daibert-Nido

Markowitz

2018

Canadian Journal of Ophthalmology

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Use of prisms for vision rehabilitation after macular function loss may impact oculomotor control

Cited by 7 publications

References 8 publications

Biofeedback stimulation in the visually impaired: a systematic review of literature

Biofeedback stimulation in the visually impaired: a systematic review of literature

Effectiveness of Prism Spectacles in Patients with Age Related Macular Degeneration: A randomized control trial study

Rehabilitation of reading skills in patients with age-related macular degeneration

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