Results 41 to 50 of about 1,358,544 (143)

Improvements to a GLCM‐based machine‐learning approach for quantifying posterior capsule opacification

Journal of Applied Clinical Medical Physics, Volume 25, Issue 2, February 2024.
Abstract Background Posterior capsular opacification (PCO) is a common complication following cataract surgery that leads to visual disturbances and decreased quality of vision. The aim of our study was to employ a machine‐learning methodology to characterize and validate enhancements applied to the grey‐level co‐occurrence matrix (GLCM) while ...
Chang Liu, Ying Hu, Yan Chen, Jian Fang, Ruhan Liu, Lei Bi, Xunan Tan, Bin Sheng, Qiang Wu   +8 more
wiley   +1 more source

Keratoconus in Down syndrome: Prevalence, risk factors, severity and corneal tomographic characteristics

Clinical &Experimental Ophthalmology, Volume 52, Issue 1, Page 22-30, January/February 2024.
Abstract Background This study investigated the prevalence, risk factors and severity of corneal tomographic features of keratoconus in Down syndrome (DS). Additionally, previous studies indicate anomalous corneal features in DS, without keratoconus, this study characterised corneal features in DS without keratoconus.
Joyce J. Mathan, Akilesh Gokul, Samantha K. Simkin, Jay J. Meyer, Charles N. J. McGhee   +4 more
wiley   +1 more source

Three-dimensional ghost imaging via the Scheimpflug detection.

Optics Express
For previous three-dimensional ghost imaging, the acquisition of absolute distance information is mainly based on the principle of time-of-flight, which usually needs lots of measurements and a large detection/modulation bandwidth product.
Shihao Chang, Jianzhong Liu, Wenlin Gong
semanticscholar   +1 more source

Changes in Corneal Higher‐Order Aberrations and Ocular Biometric Measurements after Phacoemulsification Combined with Goniosynechialysis in Primary Angle Closure/Glaucoma Patients

Journal of Ophthalmology, Volume 2024, Issue 1, 2024.
Purpose. To compare corneal higher‐order aberrations (HOAs), refractive error, and ocular biological parameters before and after phacoemulsification combined with goniosynechialysis (Phaco‐GSL) in primary angle closure/glaucoma (PAC/PACG) patients with different axial lengths (ALs). Methods.
Jiali Xia, Siqi Guo, Fei Hu, Liqi Fan, Ling Yu, Jian Ye, Kofi Asiedu   +6 more
wiley   +1 more source

Scleral Fixation of Toric Intraocular Lens in the Absence of Capsular Support

Case Reports in Ophthalmological Medicine, Volume 2024, Issue 1, 2024.
The study is aimed at describing a technique for scleral fixation of toric intraocular lens (TIOL) in the eyes without capsular support coexisting with corneal astigmatism. A monofocal toric hydrophobic lens with eyelets at the optic‐haptic junction (enVista One‐Piece Hydrophobic Acrylic MX60T Toric IOL; Bausch & Lomb) was fixated to the sclera using ...
Karolina Krix-Jachym, Natalia Błagun, Marek Rękas, Kamal Kishore   +3 more
wiley   +1 more source

How Does Pupil Size Affect Lens and Corneal Densitometry Measured by Scheimpflug Tomography? [PDF]

Turk J Ophthalmol, 2023
Bahar A, Kaya H.
europepmc   +1 more source

Refractive Index Measurement of the Crystalline Lens in Vivo. [PDF]

Optom Vis Sci, 2023
He JC.
europepmc   +1 more source

Multimodal-Based Non-Contact High Intraocular Pressure Detection Method. [PDF]

Sensors (Basel)
Lan Z, Hu Y, Yang S, Ren J, Zhang H.
europepmc   +1 more source

Anterior Segment OCT Thickness Difference Maps for Monitoring Corneal Thickness Changes: Small-Incision Lenticule Extraction as a Model. [PDF]

Transl Vis Sci Technol
Hou YT, Huang WL, Yeh HH, Lin IH, Tsai JJ, Hsieh TY, Chen WL.   +6 more
europepmc   +1 more source

Impact of Superficial Keratectomy on Corneal Topography, Aberration, and Densitometry in Salzmann Nodular Degeneration. [PDF]

J Clin Med
Qi Z, Mukhija R, Quiney G, Nanavaty MA.
europepmc   +1 more source