Clinical & experimental optometry · 2025
Rigid gas permeable contact lens correction for young children with special refractive errors.
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Jin Mingrui, Liu Lizhou, Mi Xuejing, Cui Ying, Ma Jing, Lu Hai, Jiao Yonghong
Аннотация
CLINICAL RELEVANCE: Rigid gas permeable (RGP) contact lenses effectively correct special refractive errors in young children when spectacles fail, supporting visual development.
BACKGROUND: To analyse the visual outcomes of young children (under 6 years) with special refractive errors corrected using RGP contact lenses during the visual development.
METHODS: This retrospective study included 50 young children fitted with RGP lenses at Beijing Tongren Eye Centre (2019-2024). Special refractive errors included ultra-high hyperopia due to aphakia, ultra-high myopia (spherical equivalent≤-9.00D), high astigmatism (astigmatism ≥2.00D), and high anisometropia (interocular difference ≥3.00D). Some anisometropia cases had coexisting ocular lesions (myelinated retinal nerve fibres, familial exudative vitreoretinopathy, persistent pupillary membrane). All children were > 4.5 years at final visit with ≥6 months RGP wear. We compared the changes in best-corrected visual acuity (BCVA) before and after RGP contact lens wear in these children and analysed their final visual outcomes. Binocular function was considered 'good' if the Worth 4-dot test showed fusion at near and far distances, with stereoacuity ≤100 seconds of arc.
RESULTS: Median age at RGP initiation was 3.16 years (interquartile range (IQR) 2,4), with a median wear duration of 2 years (IQR 1,3.17). BCVA improved significantly from 1.10 logMAR (IQR 1.23,1.01) to 0.30 logMAR (IQR 0.50,0.10) (p < 0.001). A total of 28 patients (56%) achieved a BCVA of 6/12 or better, with 17 showing good binocular function. The highest binocular function rates were in groups with ultra-high myopia (50%), high astigmatism (67%), and pure high anisometropia (50%). None of the nine patients with coexisting ocular lesions achieved good binocular function.
CONCLUSIONS: RGP lenses significantly improve BCVA in young children with special refractive errors. The best results were observed in cases of refractive errors alone, while those with other ocular lesions showed limited but notable improvements from baseline.
BACKGROUND: To analyse the visual outcomes of young children (under 6 years) with special refractive errors corrected using RGP contact lenses during the visual development.
METHODS: This retrospective study included 50 young children fitted with RGP lenses at Beijing Tongren Eye Centre (2019-2024). Special refractive errors included ultra-high hyperopia due to aphakia, ultra-high myopia (spherical equivalent≤-9.00D), high astigmatism (astigmatism ≥2.00D), and high anisometropia (interocular difference ≥3.00D). Some anisometropia cases had coexisting ocular lesions (myelinated retinal nerve fibres, familial exudative vitreoretinopathy, persistent pupillary membrane). All children were > 4.5 years at final visit with ≥6 months RGP wear. We compared the changes in best-corrected visual acuity (BCVA) before and after RGP contact lens wear in these children and analysed their final visual outcomes. Binocular function was considered 'good' if the Worth 4-dot test showed fusion at near and far distances, with stereoacuity ≤100 seconds of arc.
RESULTS: Median age at RGP initiation was 3.16 years (interquartile range (IQR) 2,4), with a median wear duration of 2 years (IQR 1,3.17). BCVA improved significantly from 1.10 logMAR (IQR 1.23,1.01) to 0.30 logMAR (IQR 0.50,0.10) (p < 0.001). A total of 28 patients (56%) achieved a BCVA of 6/12 or better, with 17 showing good binocular function. The highest binocular function rates were in groups with ultra-high myopia (50%), high astigmatism (67%), and pure high anisometropia (50%). None of the nine patients with coexisting ocular lesions achieved good binocular function.
CONCLUSIONS: RGP lenses significantly improve BCVA in young children with special refractive errors. The best results were observed in cases of refractive errors alone, while those with other ocular lesions showed limited but notable improvements from baseline.