Results 1 to 10 of about 3,235,809 (264)

An Automatic Calibration Method for Kappa Angle Based on a Binocular Gaze Constraint [PDF]

Sensors, 2023
Kappa-angle calibration shows its importance in gaze tracking due to the special structure of the eyeball. In a 3D gaze-tracking system, after the optical axis of the eyeball is reconstructed, the kappa angle is needed to convert the optical axis of the ...
Jiahui Liu, Jiannan Chi, Hang Sun
doaj   +5 more sources

Analysis and comparison of factors influencing post-cataract surgery kappa angle changes [PDF]

BMC Ophthalmology
Purpose This study aims to investigate the factors influencing changes in the kappa angle following cataract surgery. Methods A total of 95 eyes undergoing cataract surgery were included in this study. Preoperative and postoperative ocular biometric data
Bingzhen Li, Tengbo Rao, Yulin Tseng, Siyi Ma, Linhui He, Xuemin Li   +5 more
doaj   +4 more sources

Angle Kappa in Patients with Cataracts and High Myopia [PDF]

Ophthalmology and Therapy
Introduction The aim of this study was to investigate the magnitude and quadrantal distribution of angle kappa in patients with cataracts and high myopia (axial length ≥ 26 mm).
Ao Miao, Dongjin Qian, Jiajia Huang, Tianhui Chen, Junjie Xie, Likun Lin, Jie Xu, Yongxiang Jiang   +7 more
doaj   +4 more sources

Alpha and Kappa angle on postoperative visual quality in cataract surgery [PDF]

International Journal of Ophthalmology
AIM: To explore the effect of Alpha angle and Kappa angle before multifocal intraocular lenses (MIOLs) implantation on postoperative visual quality of patients.
Xiao-Na Chen, Ying-Yue Xiong, Jia Wei, Bin Luo, Ya-Li Gao   +4 more
doaj   +3 more sources

Comparison of visual outcomes and optical aberrations after SMILE with intraoperative Kappa angle adjustments between small and large Kappa angles [PDF]

Scientific Reports
This study compares postoperative visual outcomes and optical aberrations after Small Incision Lenticule Extraction (SMILE) in patients with both small (S-Kappa: Kappa angle
Xiaojuan Lai, Xi Liu, Tao Zeng, Yi Huang, Xin Yang   +4 more
doaj   +3 more sources

Angle Kappa and angle Alpha agreement between Pentacam Scheimpflug system, swept source optical coherence tomography and ray-tracing aberrometry

Photodiagnosis and Photodynamic Therapy, 2023
Purpose: To compare the consistency of Pentacam Scheimpflug system (Pentacam® HR), ray-tracing aberrometry (iTrace), and swept source optical coherence tomography (IOLMaster 700) measurements for Angle Kappa and angle Alpha.
Wanping Zhang, Jun Hu, Qiuya Zhao, Xiangyun Lv, Siting Liang, Jun Hu   +5 more
doaj   +4 more sources

Determinants of angle kappa in cataract patients [PDF]

Frontiers in Medicine
PurposeTo investigate the determinants of angle kappa in cataract patients.MethodsIn this retrospective study we included biometric data in both eyes of 715 cataract patients measured by Lenstar LS-900.
Ling Jin, Ling Jin, Xiaoning Hao, Xiaoning Hao, Baoyi Liu, Wenwen Geng, Wenwen Geng, Ruirui Ma, Ruirui Ma, Yuling Niu, Yuling Niu, Duanrong Cao, Duanrong Cao, Yijun Hu, Yijun Hu, Yijun Hu   +15 more
doaj   +4 more sources

Avoiding misinterpretations of Kappa angle for clinical research studies with Pentacam. [PDF]

J Optom, 2019
s t a r i s o l f i n t It has been reported that Kappa angle has an important role in laser refractive surgery procedures and implantation of multifocal intraocular lenses.1 The definition of Kappa angle in the literature is quite confusing because the ...
Rodríguez-Vallejo M, Piñero DP, Fernández J.   +2 more
europepmc   +2 more sources

Measurement of change in angle kappa and its correlation with ocular biometric parameters pre- and post-phacoemulsification

Indian Journal of Ophthalmology, 2023
Purpose: Angle kappa has been considered to play a role in causing glare and haloes despite accurate centration during implantation of multifocal intraocular lenses following phacoemulsification.
Y Umesh, Kelini Saolapurkar, Pallavi Joshi, Devika Singh   +3 more
doaj   +2 more sources

Higher-order aberrations and visual quality after incision lenticule extraction surgery with intraoperative angle kappa adjustments between small and large kappa patients: A 2-year follow-up

Indian Journal of Ophthalmology, 2023
Purpose: To evaluate the postoperative visual outcomes, that is, corneal higher-order aberrations (HOAs) and visual quality, of patients with an angle kappa greater than 0.30 mm who underwent angle kappa adjustment during small-incision lenticule ...
Mengzhen Xie, Yingping Deng, Chengshu Sun, Lemei Qiu, Jing Tang   +4 more
doaj   +2 more sources