Yamaguchi Takefumi, Negishi Kazuno, Ono Takeshi, Torii Hidemasa, Dogru Murat, Yamaguchi Kazuko, Ohnuma Kazuhiko, Tsubota Kazuo
Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
J Cataract Refract Surg. 2009 Oct;35(10):1725-33. doi: 10.1016/j.jcrs.2009.05.031.
To evaluate the feasibility of correcting spherical aberration with aspheric intraocular lenses (IOLs) in cataract surgery based on individual pupil diameter.
Keio University Hospital, Tokyo, Japan.
In this prospective study, eyes having cataract surgery were divided into 4 groups based on IOL type: aspheric SN (AcrySof SN60WF), aspheric ZA (Tecnis ZA9003), aspheric PY (Hoya PY-60 AD), and spherical (AcrySof Natural SN60AT). Postoperative higher-order aberrations (HOAs) of the cornea and whole eye and the pupil diameter under photopic and mesopic conditions were measured. The HOA was calculated using the individual pupil diameter. The correlation between corneal and ocular spherical aberrations and pupil diameter was evaluated.
Each group comprised 30 eyes. Ocular spherical aberrations were significantly lower than corneal spherical aberrations under mesopic conditions in the aspheric SN group, the aspheric ZA group, and the aspheric PY group (P<.05); there was no significant difference between the aberrations in the spherical group. Linear regression showed significant correlations between postoperative corneal and ocular spherical aberrations (beta = 0.39, aspheric SN; beta = 0.38, aspheric ZA; beta = 0.58, aspheric PY; beta = 0.79, spherical). The differences in corneal and ocular spherical aberrations were significantly correlated with pupil diameter in the aspheric IOL groups but not in the spherical IOL group.
The amount of spherical aberration correction by aspheric IOLs varied depending on IOL type and individual pupil diameter. The linear regression equation in this study may make it possible to customize postoperative ocular spherical aberration after cataract surgery.
评估在白内障手术中基于个体瞳孔直径使用非球面人工晶状体（IOL）矫正球差的可行性。
日本东京庆应义塾大学医院。
在这项前瞻性研究中，接受白内障手术的眼睛根据IOL类型分为4组：非球面SN（AcrySof SN60WF）、非球面ZA（Tecnis ZA9003）、非球面PY（Hoya PY - 60 AD）和球面（AcrySof Natural SN60AT）。测量术后角膜和全眼的高阶像差（HOA）以及明视和中视条件下的瞳孔直径。使用个体瞳孔直径计算HOA。评估角膜和眼球差与瞳孔直径之间的相关性。
每组包括30只眼睛。在中视条件下，非球面SN组、非球面ZA组和非球面PY组的眼球差显著低于角膜球差（P <.05）；球面组的像差之间无显著差异。线性回归显示术后角膜和眼球差之间存在显著相关性（β = 0.39，非球面SN；β = 0.38，非球面ZA；β = 0.58，非球面PY；β = 0.79，球面）。非球面IOL组中角膜和眼球差的差异与瞳孔直径显著相关，而球面IOL组则不然。
非球面IOL矫正球差的量因IOL类型和个体瞳孔直径而异。本研究中的线性回归方程可能使白内障手术后定制术后眼球差成为可能。
