中华眼科杂志
中華眼科雜誌
중화안과잡지
Chinese Journal of Ophthalmology
2015年
1期
26-31
,共6页
吴江秀%于青%张和宁%董世奇%叶盛%张晨昊
吳江秀%于青%張和寧%董世奇%葉盛%張晨昊
오강수%우청%장화저%동세기%협성%장신호
接触镜%角膜波前像差%像差测量
接觸鏡%角膜波前像差%像差測量
접촉경%각막파전상차%상차측량
Contact lenses%Corneal wavefront aberration%Aberrometry
目的 探讨硬性透气性角膜接触镜(RGPCL)在眼表面的形状稳定性及角膜形态对其的影响.方法 22名志愿者42只眼,用鹰式角膜地形图测量角膜像差后给予验配RGPCL,同样仪器测量RGPCL的像差后派发给志愿者,连续配戴1个月后回访,分别测量戴镜状态下以及摘镜30 min后的角膜地形图.采用配对t检验、W检验及相关分析对数据进行分析.结果 RGPCL戴到眼表面后,主要表现为离焦C4增加,右眼为离体(1.003 ±0.131) μm,在体(1.065 ±0.160) μm(P =0.015);左眼为离体(1.003±0.130) μm,在体1.069(0.851,1.594)μm,(P =0.017),水平/垂直散光C5变负,右眼为离体(0.072±0.083) μm,在体(-0.312 ±0.232)μm(P＜0.001);左眼为离体(0.066±0.056) μm,在体(-0.349±0.242)μm(P＜ 0.001),以及球差C12增加,右眼为离体(0.264±0.039)μm,在体(0.295±0.048) μm (P＜0.001);左眼为离体(0.266±0.035) μm,在体0.290(0.215,0.471) μm(P ＜0.001).角膜像差在戴镜前后发生改变的像差项有C4,C5,C7和C8等.在体RGPCL像差C4、C5、C12均与相应的戴镜前角膜像差呈正相关(右眼:r=0.557、0.596、0.581,P＜0.01,左眼:r=0.684、0.497、0.543,P＜0.01).结论 RGPCL戴在眼表面后,镜片前表面有一定程度的变平,球差增加,并且出现趋向于角膜的散光.RGPCL的配适不宜过于平坦.
目的 探討硬性透氣性角膜接觸鏡(RGPCL)在眼錶麵的形狀穩定性及角膜形態對其的影響.方法 22名誌願者42隻眼,用鷹式角膜地形圖測量角膜像差後給予驗配RGPCL,同樣儀器測量RGPCL的像差後派髮給誌願者,連續配戴1箇月後迴訪,分彆測量戴鏡狀態下以及摘鏡30 min後的角膜地形圖.採用配對t檢驗、W檢驗及相關分析對數據進行分析.結果 RGPCL戴到眼錶麵後,主要錶現為離焦C4增加,右眼為離體(1.003 ±0.131) μm,在體(1.065 ±0.160) μm(P =0.015);左眼為離體(1.003±0.130) μm,在體1.069(0.851,1.594)μm,(P =0.017),水平/垂直散光C5變負,右眼為離體(0.072±0.083) μm,在體(-0.312 ±0.232)μm(P＜0.001);左眼為離體(0.066±0.056) μm,在體(-0.349±0.242)μm(P＜ 0.001),以及毬差C12增加,右眼為離體(0.264±0.039)μm,在體(0.295±0.048) μm (P＜0.001);左眼為離體(0.266±0.035) μm,在體0.290(0.215,0.471) μm(P ＜0.001).角膜像差在戴鏡前後髮生改變的像差項有C4,C5,C7和C8等.在體RGPCL像差C4、C5、C12均與相應的戴鏡前角膜像差呈正相關(右眼:r=0.557、0.596、0.581,P＜0.01,左眼:r=0.684、0.497、0.543,P＜0.01).結論 RGPCL戴在眼錶麵後,鏡片前錶麵有一定程度的變平,毬差增加,併且齣現趨嚮于角膜的散光.RGPCL的配適不宜過于平坦.
목적 탐토경성투기성각막접촉경(RGPCL)재안표면적형상은정성급각막형태대기적영향.방법 22명지원자42지안,용응식각막지형도측량각막상차후급여험배RGPCL,동양의기측량RGPCL적상차후파발급지원자,련속배대1개월후회방,분별측량대경상태하이급적경30 min후적각막지형도.채용배대t검험、W검험급상관분석대수거진행분석.결과 RGPCL대도안표면후,주요표현위리초C4증가,우안위리체(1.003 ±0.131) μm,재체(1.065 ±0.160) μm(P =0.015);좌안위리체(1.003±0.130) μm,재체1.069(0.851,1.594)μm,(P =0.017),수평/수직산광C5변부,우안위리체(0.072±0.083) μm,재체(-0.312 ±0.232)μm(P＜0.001);좌안위리체(0.066±0.056) μm,재체(-0.349±0.242)μm(P＜ 0.001),이급구차C12증가,우안위리체(0.264±0.039)μm,재체(0.295±0.048) μm (P＜0.001);좌안위리체(0.266±0.035) μm,재체0.290(0.215,0.471) μm(P ＜0.001).각막상차재대경전후발생개변적상차항유C4,C5,C7화C8등.재체RGPCL상차C4、C5、C12균여상응적대경전각막상차정정상관(우안:r=0.557、0.596、0.581,P＜0.01,좌안:r=0.684、0.497、0.543,P＜0.01).결론 RGPCL대재안표면후,경편전표면유일정정도적변평,구차증가,병차출현추향우각막적산광.RGPCL적배괄불의과우평탄.
Objective To investigate the effect of corneal irregularity on on-eye rigid gas permeable(RGP) contact lenses and the corneal shape changed by RGP contact lenses.Methods Corneal topographywas taken for 42 bare eyes of 22 subjects before and 1 month after wearing of the RGP contact lens.Off-eye and on-eye wavefront aberrations of the anterior surface of the RGP contact lens were also measured by corneal topography for the same 42 eyes.Zernike aberrations of the RGP contact lens were examined and compared to those of baseline anterior corneal surface.Results For bare eyes,C4,C5,C7 and C8 were significantly different from the baseline 30 minutes after the RGP contact lens was removed.For the on-eye RGP contact lens,three mean Zernike aberrations were significantly different from those off-eye.These were defocus C4 [OD:(1.003 ±0.131) μm off-eye and (1.065 ±0.160) μm on-eye,P=0.015; OS:(1.003±0.130) μm off-eye and 1.069 (0.851,1.594) μm on-eye,P =0.017],main axis astigmatism C5 [OD:(0.072 ±0.083) μm off-eye and (-0.312 ±0.232) μm on-eye,P＜0.001; OS:(0.066±0.056) μm off-eye and (-0.349 ±0.242) μm on-eye,P ＜0.001],and spherical aberration C12 [OD:(0.264 ±0.039) μm off-eye and (0.295 ±0.048) μm on-eye,P ＜0.001 ; OS:(0.266 ±0.035) μm offeye and 0.290 (0.215,0.471) μm on-eye,P ＜ 0.001].All these three Zernike aberrations of on-eye RGP contact lenses were significantly correlated to those of the baseline corneas (OD:rc4 =0.557,rc5 =0.596,rc12 =0.581,P＜0.01; OS:rc4 =0.684,rc5 =0.497,rc12 =0.543,P＜0.01).Conclusions The results suggest that the surface shape of on-eye RGP contact lenses is not rigid,and its change depends on irregularity of the anterior corneal surface,even if the cornea itself is changed by the RGP contact lens.It is better not to fit for RGP so flatter than the average curvature of the cornea.
