Results 21 to 30 of about 110,606 (256)

Optimization of Zoom Lens with Discrete State of Liquid Lens Elements by Using Genetic Algorithm

Advances in Materials Science and Engineering, 2015
This paper is to employ liquid lens elements to design a lens with zoom function by using the genetic algorithm (GA) optimization. The liquid lens elements used in the proposal can apply voltage adjustment to generate the electrical field that induces ...
Cheng-Mu Tsai
doaj   +1 more source

Agreement between Eyestar and IOLMaster700 in ocular biometric measurements in a Brazilian population [PDF]

Revista Brasileira de Oftalmologia
Objective: To evaluate the agreement between the Eyestar900 and IOLMaster700 for biometric measurements and assess their interchangeability. Methods: This retrospective study analyzed the following parameters: anterior keratometry, axial length ...
Luís Armando Vitorino Alves de Souza Gondim, Roberta Kern Menna Barreto, José Maurilio Tavares de Lucena, Bernardo Kaplan Moscovici, Ivan Corso Teixeira   +4 more
doaj   +2 more sources

Scleral contact lens thickness profiles: The relationship between average and centre lens thickness

, 2019
Purpose To develop a methodology to reliably determine the thickness profile of scleral contact lenses and examine the relationship between the centre and average lens thickness for a range of lens designs and back vertex powers.
Collins, Michael, David Alonso-Caneiro, Vincent, Stephen, Stephen J. Vincent, Alonso-Caneiro, David, Henry Kricancic, Michael J. Collins, Kricancic, Henry, Vincent, Stephen J, Collins, Michael J   +9 more
core   +1 more source

Anterior, Posterior, and Thickness Cornea Differences after Scleral Lens Wear in Post-LASIK Subjects for One Year

, 2023
The aim of this study is to analyze the anterior and posterior corneal surface shape and the corneal thickness difference outcomes between before and after scleral lens (ScCL) wear in post-LASIK ectasia subjects for one year.
Gonzalo Carracedo, Serramito Blanco, María, Carracedo Rodríguez, Juan Gonzalo, Ana Privado-Aroco, Privado Aroco, Ana, Maria Serramito   +5 more
core   +1 more source

Biometric indicators of eyes with occult lens subluxation inducing secondary acute angle closure

BMC Ophthalmology, 2020
Background To compare the anterior biometrics in eyes with secondary acute angle closure induced by occult lens subluxation (ASAC-LS), misdiagnosed as acute primary angle closure (APAC) at the first visit with APAC, chronic primary angle closure glaucoma
Xiaoli Xing, Liangyu Huang, Fang Tian, Yan Zhang, Yingjuan Lv, Wei Liu, Aihua Liu   +6 more
doaj   +1 more source

Axial length, anterior chamber depth and lens thickness: Their intercorrelations in black South Africans

African Vision and Eye Health, 2017
Purpose: To determine means and ranges for axial length, anterior chamber depth, lens thickness values and their intercorrelations in an African population.
Khathutshelo P. Mashige, Olalekan A. Oduntan   +1 more
doaj   +1 more source

Corneal epithelial thickness and corneal curvature changes during the day: The effects of daily disposable contact lens wear

, 2020
Purpose: To evaluate the changes in corneal epithelial thickness and corneal anterior and posterior curvatures during the day, and the effect of wearing daily disposable soft contact lenses.
TOKER, AYŞE EBRU, AKKAYA TURHAN, SEMRA
core   +1 more source

Agreement between ANTERION and IOLMaster700 in ocular biometric measurements in a Brazilian population [PDF]

Revista Brasileira de Oftalmologia
Objective: To evaluate the agreement of biometric parameters measured by the ANTERION and IOLMaster700 devices in a Brazilian population, considering statistical differences and their clinical relevance.
Luís Armando Vitorino Alves de Souza Gondim, Roberta Kern Menna Barreto, José Maurilio Tavares de Lucena, Bernardo Kaplan Moscovici, Ivan Corso Teixeira   +4 more
doaj   +1 more source

The influence of centre thickness on miniscleral lens flexure

, 2019
Purpose To examine the influence of centre thickness upon miniscleral lens flexure and the association between the magnitude of in-vivo lens flexure and scleral toricity.
Collins, Michael, Vincent, Stephen, Alonso-Caneiro, David, Kricancic, Henry, Vincent, Stephen J, Kowalski, Louise, Collins, Michael J, Kowalski, Louise P   +7 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source