Results 41 to 50 of about 16,352,078 (311)

Cataract Grading in Pure Senile Cataracts: Pentacam versus LOCS III

Journal of Ophthalmic & Vision Research, 2022
Purpose: To determine the diagnostic accuracy of Pentacam Cataract Grading Scale (PCGS) versus the Lens Opacities Classification System (LOCS III) in scaling pure age-related cataract.
Mohammad Mirzaie, Erfan Bahremani, Nazli Taheri, Zhila Khamnian, Banafshe Kharrazi Ghadim   +4 more
doaj   +1 more source

Rigid lens dynamics: Lid effects [PDF]

, 1997
PURPOSE: Lid architecture, lid tension, blink action, and blink rate may all influence rigid lens centration and stability. The aims of this study were to assess the nature of the relationship between lid geometry and lens position and to examine the ...
Carney, Leo G., Hill, Richard M., Carkeet, Andrew, Mainstone, Julia C., Quinn, Thomas G.   +4 more
core  

Effects of different contact lens materials and contact lens-wearing periods on conjunctival cytology in asymptomatic contact lens wearers

, 2008
Purpose. To investigate the conjunctival cytologic changes induced by different contact lens materials and contact lens-wearing periods in asymptomatic contact lens wearers. Methods. Seventyfive patients (150 eyes) who were to wear contact lenses for the
Tomatir, Dilek Kutlubey, Erda, Nazan, Guerlue, Vuslat Pelitli   +2 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

OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters Arising from a Five-day Xallarap Effect in a Candidate Planetary Microlensing Event

The Astronomical Journal, 2023
We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit
Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, Leading Authors, Fumio Abe, Richard Barry, Aparna Bhattacharya, Hirosane Fujii, Akihiko Fukui, Katsuki Fujita, Tomoya Ikeno, Stela Ishitani Silva, Yoshitaka Itow, Yutaka Matsubara, Sho Matsumoto, Yasushi Muraki, Kosuke Niwa, Arisa Okamura, Greg Olmschenk, Clément Ranc, Taiga Toda, Mio Tomoyoshi, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, Kansuke Yamashita, The MOA Collaboration, Przemek Mróz, Radosław Poleski, Jan Skowron, Michał K. Szymański, Radek Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek, Marcin Wrona, Mariusz Gromadzki, The OGLE Collaboration, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Kyu-Ha Hwang, Doeon Kim, Youn Kil Jung, Hyoun Woo Kim, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet Collaboration, Uffe G. Jørgensen, Penélope Longa-Peña, Sedighe Sajadian, Jesper Skottfelt, Colin Snodgrass, Jeremy Tregloan-Reed, Nanna Bach-Møller, Martin Burgdorf, Giuseppe D’Ago, Lauri Haikala, James Hitchcock, Markus Hundertmark, Elahe Khalouei, Nuno Peixinho, Sohrab Rahvar, John Southworth, Petros Spyratos, The MiNDSTEp Collaboration   +93 more
doaj   +1 more source

Time course of corneal oxygen uptake during contact lens wear [PDF]

, 1988
We used a polarographic oxygen sensor to measure corneal oxygen uptake rates of 16 subjects during daily wear of soft contact lenses. The subjects reported for examinations on nine occasions over a 30-week lens wearing period. Corneal oxygen uptake rates
Carney, Leo G., Brennan, Noel A.
core  

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

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

Simulational investigation of self-aligned bilayer linear grating enabling highly enhanced responsivity of MWIR InAs/GaSb type-II superlattice (T2SL) photodetector

Scientific Reports
Linear gratings polarizers provide remarkable potential to customize the polarization properties and tailor device functionality via dimensional tuning of configurations.
Minseok Lee, Zahyun Ku, Seungjin Jeong, Jehwan Hwang, Junghyun Lee, Junoh Kim, Sang-Woo Kang, Augustine Urbas, Hagyoul Bae, Bongjoong Kim   +9 more
doaj   +1 more source

Laser Radar System Based on Lightweight Diffractive Lens Receiver System

Photonics
Diffractive lens has advantages over traditional reflective lens, such as light weight, high folding compression ratio, high tolerance for surface figure error and low manufacturing costs.
Jiajia Yin, Mengxia Hou, Bin Fan, Jiang Bian, Junfeng Du   +4 more
doaj   +1 more source