Causes of visual loss in students attending schools for the blind in South Eastern Nigeria

Chude, Eno A; Nwosu, Snn; Edema, OT; Umezurike, C N

doi:10.4103/njo.njo_24_17

Cited by 2 publications

(4 citation statements)

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“…However, the report by Onakpoya et al [33] in a multicentre study in southwestern Nigeria reported 69.8% which was much lower than the 93.1% recorded in the present survey. Edema et al [6] and Abah et al [39] had earlier reported that retinitis Pigmentosa is a common diagnosis among children in schools for the visually impaired in Nigeria. This confirms the fact that retinitis pigmentosa and its comorbidities are some of the reasons people attend schools for the physically challenged.…”

Section: Discussionmentioning

confidence: 99%

“…However, the rods are more affected than the cones [1,2]. The retinal dystrophic lesions of the retinitis pigmentosa is known to cause visual disability in all age groups [4] and retinitis pigmentosa is a common diagnosis among children in school for the visually impaired in Nigeria [5,6]. The prevalence varies between 1 in 4000 and 1 in 5000 of the world population [1,3] It appears in the childhood and progresses slowly, often leading to blindness in advanced middle age [3] More than one million people are affected globally [2].…”

Section: Introductionmentioning

confidence: 99%

“…Yet in another study, Nwosu et al [15] documented the prevalence of retinitis pigmentosa as 0.6%. Retinitis pigmentosa is therefore of worldwide occurrence [4][5][6][7][8][9][12][13][14][15] and no race is known to be exempted or at a higher risk [3].…”

Section: Introductionmentioning

confidence: 99%

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Retinitis Pigmentosa in Awka, Nigeria: A Survey Study

Ochiogu,

Apakama,

Udeaja

et al. 2024

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Background: Retinitis pigmentosa which causes irreversible blindness and affects all gender is usually inherited. Objectives: To describe the incidence and pattern of retinitis pigmentosa at the Eye Unit of Chukwuemeka Odumegwu Ojukwu University Teaching Hospital Awka, Nigeria. Materials and Methods: The case files of all the new patients seen at the Eye Unit of the Chukwuemeka Odumegwu Ojukwu University Teaching Hospital Awka between January 2014 to December 2021 were reviewed. Those with clinical diagnosis of Retinitis Pigmentosa were selected and information bordering on age, sex, occupation, disease duration. associated morbidity and fundus findings were extracted and analyzed using descriptive statistics. Results: Out of the 5461 new patients seen at the Eye Clinic within the study period, 29(0.5%) were diagnosed of Retinitis Pigmentosa. Of the 29 patients 18 (62.1%) were males and 11(37.9%) females, with male to female ratio of 1.6:1. The age range was 7 years to 69 years. Thirteen patients (44.8%) were between 16 years and 44 years. Median age was 33 years while the mean age was 34. 8+15. 2 years. Nine (31.0%) patients were students. The most common complaints of the patients were poor vision, 27(93.1%) and refractive error 8(27.68). Seven patients (24.18) were blind at presentation while retinal pigmentation was the most frequent fundus finding 29 (100%). Conclusion: Retinitis Pigmentosa is a cause of visual impairment and blindness which reduces the quality of life of affected persons. Early diagnosis and visual rehabilitation should be encouraged.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Retinitis Pigmentosa in Awka, Nigeria: A Survey Study

Ochiogu,

Apakama,

Udeaja

et al. 2024

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“…Retinitis pigmentosa is a common diagnosis among children in schools for the visually impaired in Nigeria. [ 17 18 ]…”

Section: Discussionmentioning

confidence: 99%

Retinitis pigmentosa in Onitsha, Nigeria

Nwosu

Ndulue

et al. 2020

J West Afr Coll Surg

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Background: Retinitis pigmentosa describes a heterogenous group of progressive hereditary degeneration of the photoreceptor-retinal pigment epithelium complex with varying clinical manifestations. Although studies on the epidemiology of blindness and visual impairment in Nigeria have documented the contribution of retinitis pigmentosa, detailed study of the prevalence, incidence, and pattern of retinitis pigmentosa in Nigeria are few. Objectives: The aim of this study was to describe the relative frequency rate and pattern of retinitis pigmentosa among new patients at the Guinness Eye Center Onitsha Nigeria. Materials and Methods: Case files of new patients with clinical features of retinitis pigmentosa seen over a 6-year period were reviewed. Information on age, sex, and associated clinical features were extracted into a standard proforma and analyzed. Results: Thirty-seven (0.6%) of 5876 new patients had retinitis pigmentosa. There were 25 (67.6%) males and 12 (32.4%) females with an age range of 4–76 years; the median age was 33 years. Family history suggested autosomal dominant inheritance in 15 (40.6%) patients, autosomal recessive inheritance 4 (10.8%), X-linked inheritance 9 (24.3%), and 9 (24.3%) sporadic. Six (16.2%) patients were blind (acuity <3/60) and 22 (59.5%) patients had visual impairment (acuity <6/18). Eight (21.6%) patients had coexistent deafness (syndromic retinitis pigmentosa) including two (5.4%) cases of Usher syndrome. Conclusions: The relative frequency rate of retinitis pigmentosa among new patients in our hospital is low but the associated visual and otologic incapacitation are enormous. A prospective study incorporating molecular genetics would more exactly determine the inheritance pattern and the common genes of retinitis pigmentosa in Nigerians.

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Causes of visual loss in students attending schools for the blind in South Eastern Nigeria

Cited by 2 publications

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Retinitis Pigmentosa in Awka, Nigeria: A Survey Study

Retinitis Pigmentosa in Awka, Nigeria: A Survey Study

Retinitis pigmentosa in Onitsha, Nigeria

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