Results 1 to 10 of about 114,329 (302)

A comparative study of knotless versus knotted transscleral suture-fixated intraocular lens implantation

Indian Journal of Ophthalmology, 2022
Purpose: To compare functional outcomes and complication rates of two scleral fixated intraocular lens implantation (SFIOL) techniques. Methods: In this retrospective study, there were 30 eyes of 30 patients who underwent SFIOL implantation for ...
Sami Yilmaz, Aysegul Mavi Yildiz, Remzi Avci   +2 more
doaj   +1 more source

Evaluation of Short-Term Safety and Efficacy of Myopia Correction with a Novel Posterior Chamber Phakic Intraocular Lens

Ophthalmology and Therapy
Introduction This study aims to evaluate the short-term safety and efficacy of the Loong Crystal®PR lens, a novel posterior chamber phakic intraocular lens (PIOL) that utilizes advanced optical and material designs.
Hui Zhang, Yunfei Han, Yu Yang, Ling Ling, Shu Xu, Xuying Zhu, Dikang Yang, Xian Zhang, Wentian Zhou   +8 more
doaj   +1 more source

Non-traumatic bilateral corneal flap dislocation 20 years after LASIK

BMC Ophthalmology
Backgroud This report describes a case of late non-traumatic dislocation of bilateral corneal flaps, occurring 20 years after LASIK surgery. Case presentation A 52-year-old woman underwent LASIK surgery on both eyes 20 years ago.
Dakun Ren, Xiangrong Xie, Xingtong Wang, Xuming Guo   +3 more
doaj   +1 more source

Cooperative role of MDSCs and Tregs in alum-induced alloimmune tolerance in corneal transplantation

Scientific Reports
Alum, a widely used adjuvant, has recently been recognized for its capacity to modulate immune responses beyond classical activation. In this study, we investigated whether alum-induced expansion of myeloid-derived suppressor cells (MDSCs) and their ...
Lifang Li, Yuping Han, Xiangrong Xie, Dakun Ren, Ying Zhang, Shaofeng Hao, Xuming Guo   +6 more
doaj   +1 more source

The Role of Orthoptists in Refraction

British and Irish Orthoptic Journal
Purpose: In 2022, the General Optical Council initiated a call for evidence concerning the Opticians Act. This consultation aimed to gather input and evidence relevant to potential modifications to the Opticians Act.
Miriam L. Conway, Rakhee Shah, Elizabeth Chapman, Bruce J. W. Evans   +3 more
doaj   +1 more source

Sensitivity of the corneal-plane refractive compensation to change in power and axial position of an intraocular lens

African Vision and Eye Health, 2009
If an intraocular lens is displaced or if its power is changed what are the consequences for the refractive compensation of the eye?  Gaussian optics is used to obtain explicit formulae for the sensitivityof the corneal-plane refractive compensation ...
W. F. Harris
doaj   +1 more source

Corneal Astigmatism After Cataract Surgery: A Review of Mechanisms, Outcomes, and Surgical Considerations

Optics
Background: This narrative review aims to assess multiple strategies available to evaluate and manage corneal astigmatism in the context of cataract surgery, with a focus on the surgical techniques, intraocular lens (IOL) selection, and the integration ...
Andreea-Alexandra-Mihaela Muşat, Cãlin-Petru Tãtaru, Gabriela-Cornelia Muşat, Lucia Bubulac, Mihai-Alexandru Preda, Ovidiu Muşat   +5 more
doaj   +1 more source

Impact of a Turbulent Ocean Surface on Laser Beam Propagation

Sensors, 2022
The roughness of the ocean surface significantly impacts air-to-sea imaging, oceanographic monitoring, and optical communication. Most current and previous methods for addressing this roughness and its impact on optical propagation are either entirely ...
Omar Alharbi, Tim Kane, Diane Henderson
doaj   +1 more source

Comparison of Refractive Outcomes Between Small Lenticule Extraction Using a 500 KHz and a 2 MHz Femtosecond Laser

Diagnostics
Background/Objectives: The aim of this study was to compare the efficacy of correcting myopia and myopic astigmatism between small incision lenticule extraction (SMILE) surgery performed using VisuMax 500 and that using VisuMax 800. Methods: Patients who
Jung Wan Kim, Youngsub Eom, Dong Hyun Kim, Ji Won Jeong, Seh Kwang Park, Jong Suk Song   +5 more
doaj   +1 more source

A Characteristics Set Computation Model for Internal Wavenumber Spectra and Its Validation with MODIS Retrieved Parameters in the Sulu Sea and Celebes Sea

Remote Sensing, 2022
The quasi-linear or nonlinear interactions among different ocean motions dominate the system internal structure and appearance feature presented in spatial and temporal evolution.
Yongzeng Yang, Meng Sun, Lina Sun, Changshui Xia, Yong Teng, Xinmei Cui   +5 more
doaj   +1 more source