Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial
AIM: To study effects of orthokeratology (Ortho-k) on accommodation function in myopic children. METHODS: A prospective, non-randomized, case-control study was performed from September to October 2016. Eighty-three children with myopia were divided into two groups. One group was treated with the ri...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2018-07-01
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| Series: | International Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.ijo.cn/en_publish/2018/7/20180726.pdf |
| _version_ | 1828339618630598656 |
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| author | Yang Yang Li Wang Peng Li Jun Li |
| author_facet | Yang Yang Li Wang Peng Li Jun Li |
| author_sort | Yang Yang |
| collection | DOAJ |
| description | AIM: To study effects of orthokeratology (Ortho-k) on accommodation function in myopic children.
METHODS: A prospective, non-randomized, case-control study was performed from September to October 2016. Eighty-three children with myopia were divided into two groups. One group was treated with the rigid contact lens for overnight Ortho-k, and the other was treated with single-vision spectacle lens (SVL). Accommodation function were assessed by accommodative amplitude (AA), accommodative sensitivity (AS), accommodative lag (Lag), negative relative accommodation (NRA), and positive relative accommodation (PRA) before and 1, 3, 6 and 12mo after treated.
RESULTS: Totally 72 myopic children were finished the follow-up: 37 in Ortho-k group and 35 in SVL group. Wearing time had a significant effect on AA, AS, Lag, and NRA of myopic children in two groups (all P<0.05). Meanwhile, there was an interaction effect between wearing time and wearing types (FAA=5.3, FAS=45.5, FLag=7.0, FNRA=3.7, all P<0.05). However, the between-group difference of AA (F=0.1), AS (F=3.2), Lag (F=1.1), NRA (F=0.3), and PRA (F=0.1) showed no significance. AA, AS, NRA, Lag and PRA were improved significantly in Ortho-k group within 1 to 6mo after wearing.
CONCLUSION: Wearing Ortho-k can improve the accommodation function of myopic children, which might be one of the mechanisms for myopia control. |
| first_indexed | 2024-04-13T22:45:18Z |
| format | Article |
| id | doaj.art-28eea91032d3441b9decab03d27f3874 |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-04-13T22:45:18Z |
| publishDate | 2018-07-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-28eea91032d3441b9decab03d27f38742022-12-22T02:26:25ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982018-07-011171234123810.18240/ijo.2018.07.26Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trialYang Yang0Li Wang1Peng Li2Jun Li3Optometry Teaching & Research Office, Xi’an Medical University, Xi’an 710021, Shaanxi Province, ChinaOptometry Teaching & Research Office, Xi’an Medical University, Xi’an 710021, Shaanxi Province, ChinaOphthalmology Department, the 451st Hospital of PLA, Xi’an 710054, Shaanxi Province, ChinaCenters for Juvenile Myopia Control and Prevention, Shaanxi Institute of Ophthalmology, Xi’an 710003, Shaanxi Province, ChinaAIM: To study effects of orthokeratology (Ortho-k) on accommodation function in myopic children. METHODS: A prospective, non-randomized, case-control study was performed from September to October 2016. Eighty-three children with myopia were divided into two groups. One group was treated with the rigid contact lens for overnight Ortho-k, and the other was treated with single-vision spectacle lens (SVL). Accommodation function were assessed by accommodative amplitude (AA), accommodative sensitivity (AS), accommodative lag (Lag), negative relative accommodation (NRA), and positive relative accommodation (PRA) before and 1, 3, 6 and 12mo after treated. RESULTS: Totally 72 myopic children were finished the follow-up: 37 in Ortho-k group and 35 in SVL group. Wearing time had a significant effect on AA, AS, Lag, and NRA of myopic children in two groups (all P<0.05). Meanwhile, there was an interaction effect between wearing time and wearing types (FAA=5.3, FAS=45.5, FLag=7.0, FNRA=3.7, all P<0.05). However, the between-group difference of AA (F=0.1), AS (F=3.2), Lag (F=1.1), NRA (F=0.3), and PRA (F=0.1) showed no significance. AA, AS, NRA, Lag and PRA were improved significantly in Ortho-k group within 1 to 6mo after wearing. CONCLUSION: Wearing Ortho-k can improve the accommodation function of myopic children, which might be one of the mechanisms for myopia control.http://www.ijo.cn/en_publish/2018/7/20180726.pdf1238orthokeratologyaccommodationmyopiachildren |
| spellingShingle | Yang Yang Li Wang Peng Li Jun Li Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial International Journal of Ophthalmology 1238 orthokeratology accommodation myopia children |
| title | Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial |
| title_full | Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial |
| title_fullStr | Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial |
| title_full_unstemmed | Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial |
| title_short | Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial |
| title_sort | accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children a prospective controlled trial |
| topic | 1238 orthokeratology accommodation myopia children |
| url | http://www.ijo.cn/en_publish/2018/7/20180726.pdf |
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