中华眼视光学与视觉科学杂志
中華眼視光學與視覺科學雜誌
중화안시광학여시각과학잡지
CHINESE JOURNAL OF OPTOMETRY OPHTHALMOLOGY AND VISUAL SCIENCE
2011年
5期
359-364
,共6页
晶体,人工,非球面%像差%对比敏感度%数字模拟%模型,眼,个体化
晶體,人工,非毬麵%像差%對比敏感度%數字模擬%模型,眼,箇體化
정체,인공,비구면%상차%대비민감도%수자모의%모형,안,개체화
Lenses,intraocular,aspheric%Aberrations%Contrast sensitivity%Numerical simulation%Models,eye,customized
目的 根据不同患者眼部解剖参数建立个体化眼模型,研究植入不同设计的人工晶状体(IOL)后的光学表现.方法 计算机数字模拟实验.采用Pentacam眼前节分析系统、IOL Master采集白内障摘除联合IOL植入术后人眼结构数据,应用ZEMAX光学设计软件建立个体化眼模型,分别模拟植入不同设计的3种非球面IOL(SofPort AO、Tecnis Z9000、FY60AD)和1种球面IOL(YA60BBR),计算这些IOL眼3 mm、4 mm、5 mm瞳孔下的调制传递函数(MTF)和对比敏感度函数(CSF)曲线.结果 随瞳孔直径增加,全眼MTF、CSF曲线高度下降；3 mm瞳孔下,个体化眼模型中3种非球面IOL的MTF和CSF曲线与球面IOL接近；5 mm瞳孔下,个体化眼模型植入4种IOL后MTF和CSF曲线差异明显,不同解剖结构参数个体获得最佳MTF和CSF曲线的IOL种类不同,在空间频率较高时更加明显.结论 根据人眼解剖参数建立个体化眼模型可以模拟该个体眼睛光学系统的光学质量.不同解剖结构的人眼光学系统获得最佳视觉质量所需的IOL种类不同.
目的 根據不同患者眼部解剖參數建立箇體化眼模型,研究植入不同設計的人工晶狀體(IOL)後的光學錶現.方法 計算機數字模擬實驗.採用Pentacam眼前節分析繫統、IOL Master採集白內障摘除聯閤IOL植入術後人眼結構數據,應用ZEMAX光學設計軟件建立箇體化眼模型,分彆模擬植入不同設計的3種非毬麵IOL(SofPort AO、Tecnis Z9000、FY60AD)和1種毬麵IOL(YA60BBR),計算這些IOL眼3 mm、4 mm、5 mm瞳孔下的調製傳遞函數(MTF)和對比敏感度函數(CSF)麯線.結果 隨瞳孔直徑增加,全眼MTF、CSF麯線高度下降；3 mm瞳孔下,箇體化眼模型中3種非毬麵IOL的MTF和CSF麯線與毬麵IOL接近；5 mm瞳孔下,箇體化眼模型植入4種IOL後MTF和CSF麯線差異明顯,不同解剖結構參數箇體穫得最佳MTF和CSF麯線的IOL種類不同,在空間頻率較高時更加明顯.結論 根據人眼解剖參數建立箇體化眼模型可以模擬該箇體眼睛光學繫統的光學質量.不同解剖結構的人眼光學繫統穫得最佳視覺質量所需的IOL種類不同.
목적 근거불동환자안부해부삼수건립개체화안모형,연구식입불동설계적인공정상체(IOL)후적광학표현.방법 계산궤수자모의실험.채용Pentacam안전절분석계통、IOL Master채집백내장적제연합IOL식입술후인안결구수거,응용ZEMAX광학설계연건건립개체화안모형,분별모의식입불동설계적3충비구면IOL(SofPort AO、Tecnis Z9000、FY60AD)화1충구면IOL(YA60BBR),계산저사IOL안3 mm、4 mm、5 mm동공하적조제전체함수(MTF)화대비민감도함수(CSF)곡선.결과 수동공직경증가,전안MTF、CSF곡선고도하강；3 mm동공하,개체화안모형중3충비구면IOL적MTF화CSF곡선여구면IOL접근；5 mm동공하,개체화안모형식입4충IOL후MTF화CSF곡선차이명현,불동해부결구삼수개체획득최가MTF화CSF곡선적IOL충류불동,재공간빈솔교고시경가명현.결론 근거인안해부삼수건립개체화안모형가이모의해개체안정광학계통적광학질량.불동해부결구적인안광학계통획득최가시각질량소수적IOL충류불동.
Objective An aspheric intraocular lens (IOL) with fixed spherical aberration (SA) implanted in an individual patient will not always obtain ideal optical quality since human corneal structure and SA have large individual variations.The aim of this research was to study optical performance of individual pseudophakic eye models that were constructed based on individual anatomic parameters and implanted IOL with different optical designs.Methods Computer numerical simulation experiment.The anatomic parameters of individual pseudophakic patients were obtained by Pentacam and IOL Master.Parameters were input into ZEMAX to build individual eye models.Three aspheric IOL (SofPort AO,Tecnis Z9000,FY60AD) and one spherical IOL (YA60BBR) were implanted into individual eye models.Modulation transfer function (MTF) and contrast sensitivity function (CSF) were calculated for 3 mm to 5 mm pupil diameters and 550 nm wavelength.Results The height of the MTF and CSF curves were decreased with larger pupils.They were similar with the 4 IOL implanted in the individual eye models for 3 mm pupil diameter,but they were different from each other for 4 and 5 mm pupils,indicating that individual people with different anatomic structures need certain types of IOL to obtain optimal optical performance.This phenomenon was more pronounced for larger pupil.Conclusion The individual eye model based on an individual patient's anatomic parameters should mimic the optical performance of an individual's eye.The type of IOL is varied to obtain optimal optical performance for the optical system of the human eye with different anatomic structures.We should choose an IOL based on the individual eye's structure to obtain optimal retinal image clinically.
