Results 21 to 30 of about 3,235,809 (264)

A review of angle kappa and multifocal intraocular lenses and their effect on visual outcomes

Acta Ophthalmologica
Although most patients are satisfied with their vision after multifocal intraocular lens (IOL) implantation, dissatisfaction has been reported for various reasons, including poor visual outcomes and visual disturbances. Many published reports hypothesise
T. Kohnen, Viswanathan Ramasubramanian, Rajaraman Suryakumar   +2 more
exaly   +2 more sources

Angle Kappa and its importance in refractive surgery

Oman Journal of Ophthalmology, 2013
Angle kappa is the difference between the pupillary and visual axis. This measurement is of paramount consideration in refractive surgery, as proper centration is required for optimal results.
Majid Moshirfar, Ryan N Hoggan, Valliammai Muthappan   +2 more
doaj   +2 more sources

The relationship between angle kappa and astigmatism after phacoemulsification with implanting of spherical and aspheric intraocular lens

Indian Journal of Ophthalmology, 2021
Purpose: To determine the significance of any association between either change in angle kappa (Κ°) or the rectilinear displacement (L, mm) of the first Purkinje image relative to the pupil center and unexpected changes in astigmatism after ...
Larysa Tutchenko, Sudi Patel, Mykhailo Skovron, Olha Horak, Oleksiy Voytsekhivskyy   +4 more
doaj   +2 more sources

Comparative analysis of preoperative and postoperative changes in photopic and mesopic angle kappa and angle alpha in cataract surgery [PDF]

BMC Ophthalmology
Purpose To evaluate changes in angle kappa (κ) and angle alpha (α) under photopic and mesopic illumination before and after cataract surgery, and to analyze their correlations with ocular biometric parameters.
Yuxiang Hu, Feifan Du, Jie Lai, Quan Zhou   +3 more
doaj   +2 more sources

Distribution of angle alpha and angle kappa offsets among adult candidates for cataract surgery

Graefe's Archive for Clinical and Experimental Ophthalmology
The current study aimed to describe the distribution of angle alpha and angle kappa offsets as well as their associated ocular biometric parameters in a large population of candidates for cataract surgery.
Adi Abulafia, David Zadok, Gil Neuman
exaly   +2 more sources

Role of angle alpha and angle kappa in patient selection for premium intraocular lenses [PDF]

Indian Journal of Ophthalmology
Shalini Kumar, Prasanna V Ramesh, Bharathi Bavahararan, Ashik Azad, Shruthy V Ramesh, Anugraha Balamurugan, Sheik M Ansar, Muhammed Ashiqu   +7 more
doaj   +2 more sources

Effects of virtual reality usage on kappa angle, accommodation, pupil, depth perception, and examination of the relationship of these parameters with discomfort perception

Marmara Medical Journal, 2023
Objective: This study aims to examine the effects of virtual reality (VR) usage on the eyes and investigate the parameters responsible for the subsequent discomfort sensation. Materials and Methods: This prospective study enrolled 20 healthy volunteers
V. Dericioğlu, Betül Kubat
semanticscholar   +1 more source

Kappa angles in different positions in patients with myopia during LASIK [PDF]

International Journal of Ophthalmology, 2016
AIM: To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK). METHODS: A retrospective study was performed on 395 eyes from 215 patients with myopia that received LASIK. Low,
Hui Qi, Jing-Jing Jiang, Yan-Ming Jiang, Li-Qiang Wang, Yi-Fei Huang   +4 more
doaj   +1 more source

The Relationship between Kappa Angle and Photic Phenomena after Trifocal Intraocular Lens Implantation

Düzce Tıp Fakültesi Dergisi, 2023
Aim: This study aimed to investigate the relationship between photic phenomena and the kappa angle after trifocal lens implantations. Material and Methods: Fifty eyes of 35 cases, 17 female and 18 male, were included in the study.
Faruk Kaya, Hacı Koç
doaj   +1 more source

Assessment of Pupil Size and Angle Kappa in Refractive Surgery: A Population-Based Epidemiological Study in Predominantly American Caucasians

Cureus, 2023
Purpose This retrospective study aims to establish normative values for pupil size, angle kappa, higher-order aberration, and astigmatism type in a largely Caucasian population in Utah, United States, utilizing the NIDEK OPD-Scan III system (Gamagori ...
Qian-Cheng Wang, Isabella M. Stoakes, M. Moshirfar, D. H. Harvey, Phillip C. Hoopes   +4 more
semanticscholar   +1 more source