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►角膜塑型術治療近視壹年追蹤報告◄
中華民國眼科學會學術討論會論文摘要
Academic and Annual
Meeting of the Ophthalmological 第五屆國際眼科專題演講會暨第四十二次學術演講會(九十年十二月八日~九日)
ABSTRACT
FORM
角膜塑型術治療近視壹年追蹤報告
張朝凱、陳德照＊、陳美齡＊＊、黃美麗＊＊
台北博仁醫院、德照眼科診所＊、台北縣立板橋醫院＊＊
Purpose：The
safety and effectiveness of orthokeratology on the myopia reduction has
been confirmed by various researchers. The objective of this investigation
is to determine whether the orthokeratology effect on myopic reduction can
be maintained long term.
Method：We
investigated 21 myopic patients (35 eyes) ranged in age from 6 to 22
years, myopic refractive error ranged from –1.00 to –11.50 D and UCVA
ranged from 20/50 to 20/2000. All subjects wore well-fitted ortho-k
contact lenses (orthofocus B, Metro Optic, USA) and were monitored
periodically for 1 years. At each follow up visits, the change of
refractive error and UCVA were measured and recorded. ANOVA was used to
examine these changes over time.
Results：Myopia
was significantly reduced over 3 month study period (P<0.001, ANOVA) and
followed a linear trend over time (P<0.005, trend analysis). The average
reduction was 385.79 diopters with a range from –1.00 to –9.00 diopters.
A total of 14(37%)eyes achieved a visual acuity of 20/20 or better and
20 (46%) eyes achieved 20/40 or better. If the patients stopped lens
wear due to non-lens related problem, the myopia didn’t revert to the
pre-treatment level. When the lens wear resumed, the myopia reduced to
the previous ortho-k treated level.
Conclusion：Myopia
progresses most rapidly during adolescent stage if leave it untreated. The
findings of this investigation suggest that the orthokeratology may be
applied as a very effective alternative method to control and prevent
myopia progression throughout the adolescent stage. Lens centration,
comfort, visual quality and corneal integrity should be maintained at all
times of lens wear.
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