The Brazilian Amazon Region Eye Survey: Design and Methods

Salomão, Solange Rios; Furtado, João M.; Berezovsky, Adriana; Cavascan, Nívea Nunes; Ferraz, Nívea Nunes; Cohen, Jacob; Muñoz, Sergio; Belfort, Rubens

doi:10.1080/09286586.2016.1276199

Cited by 8 publications

(9 citation statements)

References 9 publications

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“…Of these, 8 (0.3%) refused to participate, 335 (14.1%) did not show up for the clinical examination, and 2041 completed an ophthalmic examination, resulting in a participation rate of 85.6% (2041/2384). Demographic characteristics of the study population were described in detail previously 6 . Reliable visual acuity measurements in both eyes were obtained from 2025 participants.…”

Section: Resultsmentioning

confidence: 99%

“…Accordingly, 20 clusters (14 urban and 6 rural), consisting of 18 census sectors, were randomly selected with equal probability from the 154 sampling units. Further details on sampling plan, and baseline demographic data have been reported elsewhere 6 . In brief, a door-to-door enumeration was performed and eligible subjects were informed about the study and invited to participate in a clinical ophthalmic examination.…”

Section: Methodsmentioning

confidence: 99%

“…Written informed consent was obtained at the examination site, followed by VA measurements for distance, refraction, and an eye examination. The examination protocol was similar to the one used in SPES 7 , including VA testing, which was performed in a standardized manner at the local eye clinic for urban participants and at an itinerant eye examination center for those living in rural clusters 6 . In-home eye exam was offered for those who could not come to the clinic and it was performed with portable equipment.…”

Section: Methodsmentioning

confidence: 99%

“…The present data come from a recent population-based survey of visual impairment and blindness among adults in the city of Parintins located in the Brazilian Amazon Region (BARES) 6 . The city of Parintins with a 2010 census population of 102,718, is fairly representative in sociodemographic terms of the population of the Brazilian Amazon Region population.…”

Section: Introductionmentioning

confidence: 99%

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Vision Status in Older Adults: The Brazilian Amazon Region Eye Survey

Salomão

Berezovsky

Furtado

et al. 2018

Sci Rep

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Older adults living in remote areas with limited access to health services are at higher risk to develop visual impairment and blindness. We conducted a population-based survey to determine the vision status in subjects 45 years of age and older from urban and rural areas of Parintins city, Brazilian Amazon Region. Participants underwent ophthalmic examination, including uncorrected (UCVA), presenting (PVA) and best-corrected visual acuity (BCVA). Vision status was described as lines of visual acuity (VA) impairment and lines of VA improvement from UCVA to BCVA and from PVA to BCVA in the better-seeing eye. A total of 2384 subjects were enumerated, 2041 (85.6%) were examined, with reliable VA measurements obtained from 2025 participants. Vision status in lines of VA impairment was (mean ± standard deviation): 3.44 ± 3.53 for UCVA, 2.85 ± 3.52 for PVA and 1.50 ± 3.51 for BCVA. Female gender, older age and lower education were associated with ≥6 lines of UCVA impairment. Lines of improvement ≥3 was found in 626 (30.9%) participants and associated with female gender and rural residency. In conclusion, a third of participants could have at least three lines of VA improvement with proper refraction. Strategies to improve access to eye care and affordable glasses are needed.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vision Status in Older Adults: The Brazilian Amazon Region Eye Survey

Salomão

Berezovsky

Furtado

et al. 2018

Sci Rep

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“…The Brazilian Amazon Region Eye Survey (BARES) is a population-based study of visual impairment and blindness among adults 45 years and older residing in both urban and rural areas in the city of Parintins 11 . Several epidemiologic aspects from BARES had been previously reported: the prevalence and causes of blindness and visual impairment for distance 12 and near 13 ; the impact of refractive correction on visual acuity 14 ; the prevalence, visual outcomes and complications of cataract surgery 15 ; and the prevalence of pterygium 16 .…”

Section: Introductionmentioning

confidence: 99%

Prevalence of ocular findings regardless of visual acuity status in older adults from the Brazilian Amazon Region

Berezovsky

Watanabe

Mitsuhiro

et al. 2021

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Recently, it has been recommended that population-based studies report not only frequencies of vision impairment and blindness but also any ocular abnormalities that might lead an individual to seek for eyecare services. The current study aimed to determine prevalence of ocular findings regardless of visual acuity (VA) status in older adults from the Brazilian Amazon Region. Disturbances were grouped into: Eyelids; Anterior Segment; Posterior Segment; Increased intraocular pressure; and Overall Globe. The presence of an ocular finding was considered positive when any abnormality was noted, regardless of VA. Refractive errors were not considered. A total 2384 eligible persons were enumerated and 2041 (85.6%) examined. The prevalence of ocular disturbances in either eye was 87.0% and was associated with male gender, older age, lower education, and rural residence. Overall, main findings were pterygium, cataract, and pinguecula, occurring in 58.8%, 45.4% and 17.4%, respectively. Among individuals with 20/20 VA in both eyes, the most frequent findings were pterygium, pinguecula, and glaucoma cupping, occurring in 47.4%, 31.2% and 6.5%, respectively. The high prevalence of ocular findings observed in this population reinforces that different conditions might not immediately decrease VA but can indicate risk and/or discomfort symptoms and should be considered when planning public health ophthalmic services.

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