中国实用眼科杂志
中國實用眼科雜誌
중국실용안과잡지
CHINESE JOURNAL OF PRACTICAL OPHTHALMOLOGY
2013年
6期
697-700
,共4页
刺激性AC/A%反应性AC/A%调节滞后
刺激性AC/A%反應性AC/A%調節滯後
자격성AC/A%반응성AC/A%조절체후
Stimulus AC/A%Response AC/A%Lag of accommodation
目的 研究分析注视不同距离时使用梯度法测量AC/A结果出现差异的原因.方法 运用重复测量方法,使用综合验光仪对受试者主觉验光,全矫状态下,通过三棱镜分离加交替遮盖法分别测量受检者注视5 m处,无调节刺激及有调节刺激(-1.50 D,-2.00 D,-2.50 D)和注视33 cm处无正镜附加及有正镜附加(+1.50 D,+2.00 D,+2.50 D)时的眼位.使用开放视野式红外线自动验光仪测量以上不同调节状态下的调节反应值.梯度法测得刺激性AC/A与反应性AC/A.结果 测量40名双眼视正常的在校大学生,年龄23～25岁,双眼视状态下,注视5 m处及33 cm处使用不同调节刺激下测量的调节反应值均小于实际所需调节量.梯度法(5 m)测量的刺激性AC/A值与相应梯度法(33cm)的测量值差异有统计学意义(P＜0.05).梯度法(5 m)测量的反应性AC/A值与相应梯度法(33 cm)的测量值差异无统计学意义(P＞0.05).5 m处3种负镜片刺激下测得的3组反应性AC/A值,组间差异无统计学意义(F =0.43,P=0.66).33 cm处3组反应性AC/A值,组间差异无统计学意义(F =0.90,P=0.41).结论 调节滞后是造成分别注视5 m与33 cm处时使用梯度法测量的刺激性AC/A值出现差异的主要原因.注视5 m处与注视33 cm处梯度法测量的反应性AC/A值比较稳定.外隐斜有可能造成注视33 cm处梯度法测量的反应性AC/A值比注视5 m处的测量值偏高.
目的 研究分析註視不同距離時使用梯度法測量AC/A結果齣現差異的原因.方法 運用重複測量方法,使用綜閤驗光儀對受試者主覺驗光,全矯狀態下,通過三稜鏡分離加交替遮蓋法分彆測量受檢者註視5 m處,無調節刺激及有調節刺激(-1.50 D,-2.00 D,-2.50 D)和註視33 cm處無正鏡附加及有正鏡附加(+1.50 D,+2.00 D,+2.50 D)時的眼位.使用開放視野式紅外線自動驗光儀測量以上不同調節狀態下的調節反應值.梯度法測得刺激性AC/A與反應性AC/A.結果 測量40名雙眼視正常的在校大學生,年齡23～25歲,雙眼視狀態下,註視5 m處及33 cm處使用不同調節刺激下測量的調節反應值均小于實際所需調節量.梯度法(5 m)測量的刺激性AC/A值與相應梯度法(33cm)的測量值差異有統計學意義(P＜0.05).梯度法(5 m)測量的反應性AC/A值與相應梯度法(33 cm)的測量值差異無統計學意義(P＞0.05).5 m處3種負鏡片刺激下測得的3組反應性AC/A值,組間差異無統計學意義(F =0.43,P=0.66).33 cm處3組反應性AC/A值,組間差異無統計學意義(F =0.90,P=0.41).結論 調節滯後是造成分彆註視5 m與33 cm處時使用梯度法測量的刺激性AC/A值齣現差異的主要原因.註視5 m處與註視33 cm處梯度法測量的反應性AC/A值比較穩定.外隱斜有可能造成註視33 cm處梯度法測量的反應性AC/A值比註視5 m處的測量值偏高.
목적 연구분석주시불동거리시사용제도법측량AC/A결과출현차이적원인.방법 운용중복측량방법,사용종합험광의대수시자주각험광,전교상태하,통과삼릉경분리가교체차개법분별측량수검자주시5 m처,무조절자격급유조절자격(-1.50 D,-2.00 D,-2.50 D)화주시33 cm처무정경부가급유정경부가(+1.50 D,+2.00 D,+2.50 D)시적안위.사용개방시야식홍외선자동험광의측량이상불동조절상태하적조절반응치.제도법측득자격성AC/A여반응성AC/A.결과 측량40명쌍안시정상적재교대학생,년령23～25세,쌍안시상태하,주시5 m처급33 cm처사용불동조절자격하측량적조절반응치균소우실제소수조절량.제도법(5 m)측량적자격성AC/A치여상응제도법(33cm)적측량치차이유통계학의의(P＜0.05).제도법(5 m)측량적반응성AC/A치여상응제도법(33 cm)적측량치차이무통계학의의(P＞0.05).5 m처3충부경편자격하측득적3조반응성AC/A치,조간차이무통계학의의(F =0.43,P=0.66).33 cm처3조반응성AC/A치,조간차이무통계학의의(F =0.90,P=0.41).결론 조절체후시조성분별주시5 m여33 cm처시사용제도법측량적자격성AC/A치출현차이적주요원인.주시5 m처여주시33 cm처제도법측량적반응성AC/A치비교은정.외은사유가능조성주시33 cm처제도법측량적반응성AC/A치비주시5 m처적측량치편고.
Objective To find out why there were differences when measured AC/A ratios by Gradient measurement at different distances of fixation.Methods A repeated measurement was used.Response AC/A ratios were measured by Far-Gradient method with minus lenses (-1.50D,-2.00D,-2.50D) and Near-Gradient method with plus lenses (+1.50D,+2.00D,+2.50D).The responses of accommodation were measured objectively using an open-field infrared autorefractor.Results Forty students (age:23-25 years old) with normal binocular vision were recruited.All the participants showed a lag of accommodation when viewed the distance and near targets within different lenses.A statistically significant difference was observed between the distance stimulus AC/A and the near stimulus AC/A (33cm) (P ＜0.05),but no difference between the near response AC/A ratios and the distance response AC/A ratios (P ＞0.05).And no differences among the near response AC/A ratios measured by three different additions (F =0.90,P =0.41) were observed.There were also no differences among the three groups of the distance response AC/A ratios (F =0.43,P =0.66).Conclusions The main reason caused the difference between the stimulus AC/A ratios measured by Far-Gradient measurement and Near-Gradient measurement is lag of accommodation.It is possible that the exophoria lead to higher response AC/A ratios measured by Near-Gradient method with plus lens,which also can be investigated on later.
