Visual function and ocular status of children with hearing impairment in Oman: A case series

Khandekar, Rajiv; Fahdi, Mohammed Al; Jabri, Bushra Al; Harby, Saleh Al; Abdulamgeed, Talat

doi:10.4103/0301-4738.49400

Cited by 7 publications

(15 citation statements)

References 6 publications

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“…Similarly, Khandekar et al. () investigated visual defects in the profoundly deaf >81 dB and severely deaf 61–80 dB, but did not find any association between visual acuity and contrast sensitivity defects and level of hearing impairment. There was a notable association between increased ocular anomalies and rubella.…”

Section: Range and Severity Of Hearing Impairment And Visual Performancementioning

confidence: 95%

“…() assessed with a Snellen reduced E near chart and Khandekar et al. () with near Lea symbols. Although measurement of near vision was undertaken by Khandekar et al.…”

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

“…Although measurement of near vision was undertaken by Khandekar et al. (), no near vision results were presented. It is evident that many of the deaf studies from developing countries (Gogate et al.…”

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

“…; Khandekar et al. ; Abah et al. ) have greater reliance on non‐reading ‘illiterate’ tests possibly indicating the greater difficulties these children have in acquiring basic reading skills when compared with their hearing counterparts or simply that the levels of literacy are much lower in these countries.…”

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

“…Near vision assessments in deaf individuals are a rarity within the literature and when they have been undertaken, the reduced Snellen tumbling 'E' letter charts have typically been used (Regenbogen & Godel 1985). For example, Hanioglu-Kargi et al (2003) assessed with a Snellen reduced E near chart and Khandekar et al (2009) with near Lea symbols. Although measurement of near vision was undertaken by Khandekar et al (2009), no near vision results were presented.…”

Section: Visual Defectsrefractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

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Visual performance and ocular abnormalities in deaf children and young adults: a literature review

Hollingsworth

Ludlow

Wilkins

et al. 2013

Acta Ophthalmologica

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ABSTRACT.Visual defects are common in deaf individuals. Refractive error and ocular motor abnormalities are frequently reported, with hyperopia, myopia, astigmatism and anomalies of binocular vision, all showing a greater prevalence in deaf individuals compared with the general population. Near visual function in deaf individuals has been relatively neglected in the literature to date. Comparisons between studies are problematic due to differences in methodology and population characteristics. Any untreated visual defect has the potential to impair the development of language, with consequences for education more generally, and there is a need to improve screening and treatments of deaf children.

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Section: Range and Severity Of Hearing Impairment And Visual Performancementioning

confidence: 95%

“…() assessed with a Snellen reduced E near chart and Khandekar et al. () with near Lea symbols. Although measurement of near vision was undertaken by Khandekar et al.…”

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

Section: Visual Defects – Refractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

Section: Visual Defectsrefractive and Binocular Vision Abnormalitiesmentioning

confidence: 99%

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Visual performance and ocular abnormalities in deaf children and young adults: a literature review

Hollingsworth

Ludlow

Wilkins

et al. 2013

Acta Ophthalmologica

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Visual function of children with visual and other disabilities in Oman: A case series

Gogri

Khandekar

Harby

2016

Indian J Ophthalmol

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Background:We assessed the visual functioning of the children with special needs in Oman between 2009 and 2012. We present the methods of assessing different visual functions, outcomes, and interventions carried out to improve their functioning.Methods:Optometrists assessed visual functions of children of “Day care centres” in Oman. Experts further assessed them and provided low vision care. Ocular movements, refractive corrections, near, distance, contrast color, motion, field of vision, and cognitive visual function test results were noted. Feedback to caregivers was given to improve visual functioning of these children.Results:We grouped 321 participants, (196 [61.1%] boys, age range of 3–18 years) into 61; Down syndrome (DS), 72 with intellectual disabilities (IDs), 67; hearing impaired and 121 with other conditions. Refractive error and lag of accommodation were 26 (42.6%) and 14 (22.6%) among children with DS. Contrast sensitivity was impaired in 8 (12.7%) among hearing impaired children. Defective distant and near vision was in 162 (70%) and 104 (42%) of our cohort. Children with ID were most difficult to assess. Children in a group of other disabilities had a higher proportion of impaired visual functioning. They were given low vision aids (telescopes [22], filters [7], and magnifiers [3]) in large numbers compared to those in other groups.Conclusions:Visual functioning of children with other disabilities show great variation and difficult to group. The care, therefore, should be at individual level. All visual functions cannot be assessed at one time.

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Impact of correcting visual impairment and low vision in deaf-mute students in Pune, India

Gogate

Bhusan

Ray

et al. 2016

Indian J Ophthalmol

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Aim:The aim of this study was to evaluate visual acuity and vision function before and after providing spectacles and low vision devices (LVDs) in deaf-mute students.Settings:Schools for deaf-mute in West Maharashtra.Methods:Hearing-impaired children in all special schools in Pune district underwent detailed visual acuity testing (with teachers' help), refraction, external ocular examination, and fundoscopy. Students with refractive errors and low vision were provided with spectacles and LVD. The LV Prasad-Functional Vision Questionnaire consisting of twenty items was administered to each subject before and after providing spectacles, LVDs.Statistical Analysis:Wilcoxon matched-pairs signed-ranks test.Results:252/929 (27.1%) students had a refractive error. 794 (85.5%) were profound deaf. Two-hundred and fifty students were dispensed spectacles and LVDs. Mean LogMAR visual acuity before introduction of spectacles and LVDs were 0.33 ± 0.36 which improved to 0.058 (P < 0.0001) after intervention. It was found that difference in functional vision pre- and post-intervention was statistically significant (P < 0.0001) for questions 1–19. The most commonly reported difficulties were for performing distance task like reading the bus destination (58.7%), making out the bus number (51.1%), copying from blackboard (47.7%), and seeing whether somebody is waving hand from across the road (45.5%). In response to question number 20, 57.4% of students felt that their vision was much worse than their friend's vision, which was reduced to 17.6% after dispensing spectacles and LVDs.Conclusion:Spectacle and LVD reduced visual impairment and improved vision function in deaf-mute students, augmenting their ability to negotiate in and out of school.

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Visual function and ocular status of children with hearing impairment in Oman: A case series

Cited by 7 publications

References 6 publications

Visual performance and ocular abnormalities in deaf children and young adults: a literature review

Visual performance and ocular abnormalities in deaf children and young adults: a literature review

Visual function of children with visual and other disabilities in Oman: A case series

Impact of correcting visual impairment and low vision in deaf-mute students in Pune, India

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