Optical and nonoptical aids for reading and writing in individuals with acquired low vision

Monteiro, Mayla Myrina Bianchim; Montilha, Rita de Cássia Ietto; Carvalho, Keila Monteiro de; Gasparetto, Maria Elisabete Rodrigues Freire

doi:10.5935/0004-2749.20140023

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…The Group 1 was constituted by people with more than 18 years of age, both genders, with blindness, with good general health, and without other physical and mental disabilities. Present visual acuity less than 20/400, nger counts at 1 m, and with lack of light perception in the best eye, according to the criteria of the World Health Organization [41]. People older than 18 years-old, of both sexes, with good visual acuity, healthy were eligible to form Group 2.…”

Section: Eligibity Criteriamentioning

confidence: 99%

Alterations in Heart rate Variability in Blind Patients

Moreno

Moreno-Mantilla

Lima

et al. 2021

Preprint

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Blindness affect the daily life activities and the causes and prevalence are different worldwide. This study aimed to investigate the pattern of the autonomic nervous system modulation on the heart in blind and normal vision subjects submitted acutely to low vision. Normal vision (NV) subjects (N = 32) and blind patients (N = 24) were submitted to HRV analysis during resting, intervention and recovery periods. Intervention consisted of handling objects, short walking, and cognitive activities performed with pedagogic games while using sleeping masks. No difference was observed in indexes in the time and frequency domain, and in the geometric indexes comparing blind and NV subjected to acute low vision during resting and recovery. Nevertheless, during intervention, RMSSD, pNN50, and SD1were found lower in blind than in NV subjects. Therefore, blind patients showed similar HRV at resting or upon possible stressful challenges compared to NV subjects acutely subjected to low vision, indicating absence of differences in the cardiovascular risk between groups. In addition, blind patients show a smaller reduction in parasympathetic modulation on the heart during possible stressful challenges than NV individuals submitted to low vision, which is likely an important physiological adaptation for an adequate function of the cardiovascular system in blindness.

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Section: Eligibity Criteriamentioning

confidence: 99%

Alterations in Heart rate Variability in Blind Patients

Moreno

Moreno-Mantilla

Lima

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Design and implementation of optical stimulus system for rehabilitation and development of visual functions in children with low vision

Kermani

Moazeni

Tavakoli³

et al. 2019

Optik

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Heart rate variability in people with visual disability

et al. 2019

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Introduction: People with visual impairment (VI) have loss of vision that causes impact on their daily living activities. Synonymous of VI are blindness, low vision, subnormal vision, visual incapacity, although there are peculiarities among them. The autonomic nervous system (ANS) provides the body with dynamic adaptation, moment by moment, according to changes in the internal and/or external body environment. As VI is an adverse condition, it is expected to be associated with changes in systemic autonomic activity, such as heart rate (HR) variability. Objective: To analyze the blindness stress by monitoring the activity of the ANS in the heart in subjects submitted acutely to low vision and also in subjects with chronic visual deficiency. Method: This is a randomized trial experimental study. In this clinical trial, initially, patients will undergo an ophthalmologic medical evaluation, along with monitoring of HR and systolic blood pressure /diastolic blood pressure. Volunteers with normal vision (Group i); and people with VI (Group ii) will be evaluated, all of them inhabitants of Rio Branco City, capital of Acre State, Brazilian Amazon. The intervention will consist of simulating blindness by sealing both eyes of each participant with good eyesight, using a sleep mask and allowing maximum occlusion for 45 minutes, split into 3 periods of 15 minutes each. Still blindfolded, participants will be requested to perform different tasks as walking, serve themselves water and/or cookies, and engaging in playful-pedagogical activity. Identical procedure will be done with the group with VI. The HR will be recorded by the Polar RS800 HR monitor. All findings with a value of P < .05 will be considered statistically significant. As a risk measure the odds ratio will be calculated, adjusted, and not adjusted with their respective 95% confidence intervals. The odds ratio = 1 of lowest risk for the outcome of interest will be considered as the base category for each independent variable. Ethics and dissemination: This study will be carried out in accordance with the guidelines that regulate human research in Resolution No. 466/12 of the National Health Council. We obtained the approval of the Research Ethics Committee of the ABC Medical School/Faculdade de Medicina do ABC, with CAAE: 73945017.0.0000.0082, and Opinion No. 2,275,101. All individuals who agreed to participate in the study will sign the free and informed consent form (FICF). The FICF is also available in audio and Braille versions. The results will be disseminated through peer-reviewed journal articles and conferences. This study is registered in the Brazilian Registry of Clinical Trials under the number RBR-9sm9dp.

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Optical and nonoptical aids for reading and writing in individuals with acquired low vision

Cited by 5 publications

References 11 publications

Alterations in Heart rate Variability in Blind Patients

Alterations in Heart rate Variability in Blind Patients

Design and implementation of optical stimulus system for rehabilitation and development of visual functions in children with low vision

Heart rate variability in people with visual disability

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