【摘要】 为了提高白光下人眼的视觉质量,设计了一款折射/衍射球柱有晶体眼人工晶体(PIOL)。根据实际人眼的角膜地形图、眼内各组分的轴向间距和波前像差,运用Zemax光学设计软件,构建了个性化眼模型;然后,运用该模型,设计了球柱PIOL和折射/衍射球柱PIOL。研究表明:与球柱PIOL相比,折射/衍射球柱PIOL能够全面提高人眼的白光调制传递函数(MTF)和非中心波长下的MTF,有利于获得良好的视觉质量。研究还表明:折射/衍射球柱PIOL只需要在4 mm区域设计二元面就能够满足要求。最后,分析了加工工艺问题。折射/衍射球柱PIOL在先进视觉矫正方面具有潜在的应用价值。更多还原

【Abstract】 A refractive/diffractive spherocylindrical Phakic Intraocular Lens(PIOL) is designed to improve the white light visual quality of the human eye.On the basis of measured individual corneal data,eyeball depths and wavefront aberrations,an individual eye model is constructed with the optical design software Zemax,then the spherocylindrical PIOL and the refractive/diffractive spherocylindrical PIOL are designed by the established eye model.A comparison with spherocylindrical PIOL shows that the refractive/diffractive spherocylindrical PIOL can optimize overall white light Modulation Transfer Functions(MTF) and the MTFs of non-center wavelengths to improve the visual quality.The experiment also shows that a zone of 4 mm is enough for the binary structure.Finally,the fabrication issues are discussed.Obtained results indicate that the designed refractive/diffractive spherocylindrical PIOL has great potential ities in advanced vision correction.更多还原