Effect of Defocus Incorporated Multiple Segments Spectacle Lens Wear on Visual Function in Myopic Chinese Children
| Autor: | Keigo Hasegawa, Carly S.Y. Lam, Wing Chun Tang, W. Neil Charman, Hema Radhakrishnan, Hua Qi, Chi Ho To |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty China Visual acuity genetic structures Adolescent myopia control Biomedical Engineering Article law.invention 03 medical and health sciences 0302 clinical medicine law Ophthalmology medicine Myopia Humans Child Dioptre myopic defocus Vision Ocular Monocular business.industry Repeated measures design Accommodation Ocular Amplitude of accommodation eye diseases Lens (optics) Stereoscopic acuity 030104 developmental biology Eyeglasses spectacle lens 030221 ophthalmology & optometry sense organs medicine.symptom business Accommodation |
| Zdroj: | Translational Vision Science & Technology |
| ISSN: | 2164-2591 |
| Popis: | Purpose To compare visual function of myopic children who had worn either defocus incorporated multiple segment (DIMS) spectacle lenses or single vision (SV) spectacle lenses over two years. Methods We included 160 Chinese myopic (-1 diopter [D] to -5 D) children aged 8 to 13 years in a randomized clinical trial; they wore either DIMS lenses (DIMS; n = 79) or regular SV spectacles lenses (n = 81) full time for 2 years. Visual function, including high-contrast visual acuity (VA) and low-contrast VA at distance and near, binocular functions, and accommodation, before, during, and after 2 years of spectacle wear were assessed when both groups wore SV corrections. Changes of visual function between the two groups and within groups were compared. Results There were no statistically significant differences in the 2-year visual function changes between DIMS and SV groups (repeated measures analysis of variance with group as factor; P > 0.05). Statistically significant improvement in the best-corrected distance high-contrast VA (P < 0.001) and stereoacuity score (P < 0.001) were found after DIMS lens wear over 2 years. Similar findings were observed after SV spectacle lens wear. For both the DIMS and SV groups, there were statistically significant decreases in accommodative lag, monocular and binocular amplitude of accommodation after two years (P < 0.01), but not in the changes in distance low-contrast VA, near high-contrast VA, near low-contrast VA, or phoria. Conclusions Although changes in some visual function were shown during 2 years of DIMS lens wear, similar changes were found with SV lens wear. Wear of DIMS spectacle lenses for 2 years does not adversely affect major visual function when children return to SV corrections. Translational Relevance DIMS spectacle lenses did not cause any adverse effects on visual function. |
| Databáze: | OpenAIRE |
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