[Influence of wearing long wavelength filter glasses on refractive development of children's hyperopia].
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. 543vs.0.104±0.143,t=3.04,P=0.005, 12 months: 1.096±0.392vs.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).
Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Myopia Key Lab. of Health Ministry Shanghai 200031, China.
J
J
Huang
Z Q
ZQ
Yu
R Y
RY
Chu
Y S
YS
Qian
Y
Y
Xu
X Q
XQ
Wang
D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D015785:Eye Diseases, Hereditary / Q000503:physiopathology / Q000534:rehabilitation*; D005139:Eyeglasses; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000503:physiopathology / Q000534:rehabilitation*; D008027:Light; D008297:Male; D009184:Mydriatics; D012029:Refraction, Ocular; D013997:Time Factors; D014787:Vision Tests; D014792:Visual Acuity
D009184:Mydriatics
Color vision; Eyeglasses; Hyperopia; Refraction, ocular; Visual acuity