Related Experiment Video
Updated: Mar 8, 2026
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
[Influence of wearing long wavelength filter glasses on refractive development of children's hyperopia]
1Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Myopia Key Lab. of Health Ministry Shanghai 200031, China.
Insights
Long wavelength filter glasses did not alter refractive development in children with high hyperopia over two years. However, they induced short-term chromatic adaptation, increasing sensitivity to long-wavelength light.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Visual Science
Background:
- High hyperopia in children requires effective management strategies.
- Understanding the impact of optical interventions on refractive development is crucial.
- Long wavelength filter glasses are a potential, yet understudied, intervention.
Purpose of the Study:
- To investigate the efficacy of long wavelength filter glasses in managing refractive development in children with high hyperopia.
- To assess the impact of these glasses on visual acuity and ocular parameters.
- To evaluate short-term and long-term chromatic adaptation effects.
Main Methods:
- A case control study involving 17 children (5-7 years) with high hyperopia (>+6.00 D).
- A self-controlled design comparing the right and left eyes, with one eye wearing filter glasses and the other conventional ones.
- Refractive error, axial length, and color vision (red/green match point) were monitored over 24 months.
Main Results:
- No statistically significant differences in hyperopia, axial length, or best-corrected visual acuity were observed between the filter and conventional glasses groups over two years.
- Significant short-term decreases in the red/green match point were noted in the filter group at 6 and 12 months, indicating adaptation.
- Hyperopic eyes showed increased sensitivity to long-wavelength light after wearing the filter glasses, but this effect diminished over time.
Conclusions:
- Two-year use of long wavelength filter glasses does not influence the refractive development of high hyperopia in children.
- These glasses can induce transient chromatic adaptation, enhancing sensitivity to long-wavelength light in the short term.
- Further research may explore different durations or types of filters for potential long-term effects.
Abstract:
Objective: To investigate the effect of wearing long wavelength filter glasses on refractive development of children's hyperopia. Methods: Case control study. Seventeen 5-7 years' old children with high hyperopia from optometry clinic of Eye and ENT Hospital Affiliated to Fudan University were enrolled in this research. The experiment design was self-control between right and left eye, 3 children were lost during two years' period of observation, all the children's hyperopic refraction were more than +6.00 D, cycloplegic by 1% atropine. All the children were required to wear long wavelength filter glasses for 6 hours after waking up, the rest of the time with the conventional glasses. Refraction, axis and red/green match point were tested before the intervention and 3, 6, 12, 18, 24 months, after the intervention. Results: After two years' intervention, hyperopia decreased, eye axis increased, the best corrected visual acuity increased both in experimental eyes and control eyes, but there were no statistically significant difference between the two groups at each time point. All children were with normal color vision, compared to the long-wavelength light, the hyperopic eyes were more sensitive to middle-wavelength light, no significant difference was found between two groups, red/green match points were 42.802±1.216 and 42.889±1.560 respectively. After wearing long wavelength filter, red/green match point were significant decreased in the experimental group in 6 months and 12 months time points (6 months: 0.995±0. 543 vs. 0.104±0.143, t=3.04, P=0.005, 12 months: 1.096±0.392 vs. 0.17±0.248, t=2.725, P=0.008). The experiment eyes were more sensitive to long-wavelength light than the control eyes. But in later time, there was no significant difference between two groups. Conclusion: Wearing long wavelength filter glasses two years has no effect on refractive development on children with high hyperopia, but it can cause short-term chromatic adaptation, making hyperopic eyes more sensitive to the long-wavelength light. (Chin J Ophthalmol, 2017, 53: 33-38).
Related Concept Videos
01:16Focusing of Light in the Eye
01:22Photoreceptors and Visual Pathways