白内障患者术前Kappa角和Alpha角相关性研究
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摘要
目的观察白内障患者术前Kappa角与Alpha角的相关性。方法采用以人群为基础的横断面研究,对我院拟行白内障手术的患者35例(68眼)进行Kappa角和Alpha角的测量以及相关性研究。结果总体Kappa角与Alpha角无统计学差异,且两者均无眼别差异(P>0.05)。随着Kappa角的增大,Alpha角也增大。Kappa角越大,Kappa角与Alpha角的绝对值差值和矢量值差值越大。相比角膜中心,瞳孔中心的个体差异性更大;随着Kappa角增大,角膜中心与瞳孔中心的相对位移越大。Alpha角基本位于双眼视轴颞侧,Kappa角轴位较Alpha角更为分散。结论 Kappa角与Alpha角具有相关性,且Alpha角比Kappa角更稳定。
Objective To evaluate the correlation between preoperative Kappa angle and Alpha angle in patients with cataract. Methods A population-based cross-sectional study was performed to measure Kappa and Alpha angles in 68 eyes of 35 patients before cataract surgery in our hospital and to analyze the correlation. Results There was no statistically significant difference between the overall Kappa angle and the Alpha angle, and there was no difference between the left eyes and the right eyes(P >0.05). As the Kappa angle increased, the Alpha angle also increased. The larger the Kappa angle, the greater the difference between the absolute value and vector value of Kappa angle and the Alpha angle, and the individual difference in the center of the pupil was greater than the center of the cornea. As the Kappa angle increased, the relative displacement of the center of the cornea and the center of the pupil increased. The Alpha angle located substantially on the pupil side of the binocular, and the Kappa angular position was more dispersed than the Alpha angle.Conclusion The Kappa angle is related to the Alpha angle, and the Alpha angle is more stable than the Kappa angle.
Objective To evaluate the correlation between preoperative Kappa angle and Alpha angle in patients with cataract. Methods A population-based cross-sectional study was performed to measure Kappa and Alpha angles in 68 eyes of 35 patients before cataract surgery in our hospital and to analyze the correlation. Results There was no statistically significant difference between the overall Kappa angle and the Alpha angle, and there was no difference between the left eyes and the right eyes(P >0.05). As the Kappa angle increased, the Alpha angle also increased. The larger the Kappa angle, the greater the difference between the absolute value and vector value of Kappa angle and the Alpha angle, and the individual difference in the center of the pupil was greater than the center of the cornea. As the Kappa angle increased, the relative displacement of the center of the cornea and the center of the pupil increased. The Alpha angle located substantially on the pupil side of the binocular, and the Kappa angular position was more dispersed than the Alpha angle.Conclusion The Kappa angle is related to the Alpha angle, and the Alpha angle is more stable than the Kappa angle.
引文
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[16] H RING G,DICK HB,KRUMMENAUER F,et al.Subjective photic phenomena with refractive multifocal and monofocal intraocular lenses 1:results of a multicenter questionnaire[J].J Cataract Refract Surg,2001,27(2):245-249.
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[2] CILLINO G,CASUCCIO A,PASTI M,et al.Working-age cataract patients:visual results, reading performance, and quality of life with three diffractive multifocal intraocular lenses[J].Ophthalmology,2014,121(1):34-44.
[3] MOJZIS P,PE A-GARCíA P,LIEHNEOVA I,et al.Outcomes of a new diffractive trifocal intraocular lens[J].J Cataract Refract Surg,2014,40(1):60-69.
[4] ZHANG JS,ZHAO JY,SUN Q.Distance vision after bilateral implantation of AcrySof toric intraocular lenses:a randomized, controlled,prospective trial[J].Int J Ophthalmol,2011,4(2):175-178.
[5] WOODWARD MA,RANDLEMAN JB,STULTING RD.Dissatisfaction after multifocal intraocular lens implantation[J].J Cataract Refract Surg,2009,35(6):992-997.
[6] DE VRIES NE,WEBERS CA,TOUWSLAGER WR,et al.Dissatisfaction after implantation of multifocal intraocular lenses[J].J Cataract Refract Surg,2011,37(5):859-865.
[7] TCHAH H,NAM K,YOO A.Predictive factors for photic phenomena after refractive, rotationally asymmetric, multifocal intraocular lens implantation[J].Int J Ophthalmol,2017,10(2):241-245.
[8] KARHANOV M,PLUH EK F,ML K P,et al.The importance of angle kappa evaluation for implantation of diffractive multifocal intra-ocular lenses using pseudophakic eye model[J].Acta Ophthalmol,2015,93(2):e123-e128.
[9] QI Y,LIN J,LENG L,et al.Role of angleκin visual quality in patients with a trifocal diffractive intraocular lens[J].J Cataract Refract Surg,2018,44(8):949-954.
[10] PRAKASH G,PRAKASH DR,AGARWAL A,et al.Predictive factor and kappa angle analysis for visual satisfactions in patients with multifocal IOL implantation[J].Eye,2011,25(9):1187-1193.
[11] DE CA,ROSALES P,MARCOS S.Tilt and decentration of intraocular lenses in vivo from Purkinje and Scheimpflug imaging. Validation study[J].J Cataract Refract Surg,2007,33(3):418-429.
[12] KIM JS,JUNG JW,LEE JM,et al.Clinical outcomes following implantation of diffractive multifocal intraocular lenses with varying add powers[J].Am J Ophthalmol,2015,160(4):702-709.e1.
[13] CAN I,BOSTANCI CB,SOYUGELEN G,et al.Comparison of clinical outcomes with 2 small-incision diffractive multifocal intraocular lenses[J].J Cataract Refract Surg,2012,38(1):60-67.
[14] CILLINO S,CASUCCIO A,PACE FD,et al.One-year outcomes with new-generation multifocal intraocular lenses[J].Ophthalmology,2008,115(9):1508-1516.
[15] CHIAM PJ,CHAN JH,AGGARWAL RK,et al.ReSTOR intraocular lens implantation in cataract surgery:quality of vision[J].J Cataract Refract Surg,2006,32(9):1459-1463.
[16] H RING G,DICK HB,KRUMMENAUER F,et al.Subjective photic phenomena with refractive multifocal and monofocal intraocular lenses 1:results of a multicenter questionnaire[J].J Cataract Refract Surg,2001,27(2):245-249.
[17] JUNG CK,CHUNG SK,BAEK NH.Decentration and tilt:silicone multifocal versus acrylic soft intraocular lenses[J].J Cataract Refract Surg,2000,26(4):582-585.
[18] TABERNERO J,PIERS PA,REDONDO M,et al.Predicting the optical performance of eyes implanted with IOLs to correct spherical aberration[J].Invest Ophthalmol Vis Sci,2006,47(10):4651-4658.
[19] TAKETANI F,MATUURA T,YUKAWA E,et al.Influence of intraocular lens tilt and decentration on wavefront aberrations[J].J Cataract Refract Surg,2004,30(10):2158-2162.
[20] TAKETANI F,YUKAWA E,YOSHII T,et al.Influence of intraocular lens optical design on high-order aberrations[J].J Cataract Refract Surg,2005,31(5):969-972.