RT Journal Article
T1 Refractive error study in young subjects: results from a rural area in Paraguay
A1 Signes Soler, Isabel
A1 Hernández Verdejo, José Luis
A1 Estrella Lumeras, Miguel Ángel
A1 Tomás Verduras, Elena
A1 Piñero, David Pablo
AB AIM: To evaluate the distribution of refractive error in young subjects in a rural area of Paraguay in the context of an international cooperation campaign for the prevention of blindness.METHODS: A sample of 1466 young subjects (ranging from 3 to 22 years old), with a mean age of 11.21±3.63 years old, were examined to assess their distance visual acuity (VA) and refractive error. The first screening examination performed by trained volunteers, included visual acuity testing, autokeratometry and non-cycloplegic autorefraction. Inclusion criteria for a second complete cycloplegic eye examination by an optometrist were VA <20/25 (0.10 logMAR or 0.8 decimal) and/or corneal astigmatism ≥1.50 D.RESULTS: An uncorrected distance VA of 0 logMAR (1.0 decimal) was found in 89.2% of children. VA <20/25 and/or corneal astigmatism ≥1.50 D was found in 3.9% of children (n=57), with a prevalence of hyperopia of 5.2% (0.2% of the total) in this specific group. Furthermore, myopia (spherical equivalent ≤-0.5 D) was found in 37.7% of the refracted children (0.5% of the total). The prevalence of refractive astigmatism (cylinder ≤-1.50 D) was 15.8% (0.6% of the total). Visual impairment (VI) (0.05≤VA≤0.3) was found in 12/114 (0.4%) of the refracted eyes. Main causes for VI were refractive error (58%), retinal problems (17%, 2/12), albinism (17%, 2/12) and unknown (8%, 1/12).CONCLUSION: A low prevalence of refractive error has been found in this rural area of Paraguay, with higher prevalence of myopia than of hyperopia.
PB Press of International Journal of Ophthalmology
SN 2222-3959
YR 2017
FD 2017-03-18
LK https://hdl.handle.net/20.500.14352/18051
UL https://hdl.handle.net/20.500.14352/18051
LA eng
NO Signes Soler, I., Hernández-Verdejo, J. L., Estrella Lumeras, M. Á. et al. «Refractive Error Study in Young Subjects: Results from a Rural Area in Paraguay». International Journal of Ophthalmology, vol. 10, n.o 3, marzo de 2017, pp. 467-72. www.ijo.cn, https://doi.org/10.18240/ijo.2017.03.22.
DS Docta Complutense
RD 24 ago 2024