Results 61 to 70 of about 15,918 (267)

Combined Protocols for Corneal Collagen Cross-Linking with Photorefractive Surgery for Refractive Management of Keratoconus: Update on Techniques and Review of Literature

Ophthalmology and Therapy, 2019
With the development and gradual dissemination of corneal collagen cross-linking (CXL) in the twenty-first century as an early treatment for keratoconus, the management paradigm has shifted to include a greater focus on complete refractive correction for
Angela Y. Zhu, Albert S. Jun, Uri S. Soiberman   +2 more
doaj   +1 more source

Keratocyte apoptosis and corneal antioxidant enzyme activities after refractive corneal surgery

, 2002
Purpose Refractive corneal surgery induces keratocyte apoptosis and generates reactive oxygen radicals (ROS) in the cornea. The purpose of the present study is to evaluate the correlation between keratocyte apoptosis and corneal antioxidant enzyme ...
Adiguzel, U, Bilgihan, A, U Adiguzel, Yis, O, C Sezer, Hasanreisoglu, B, G Akyol, Akyol, G, Sezer, C, Bilgihan, K, K Bilgihan, A Bilgihan, O Yis, B Hasanreisoglu   +13 more
core   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Comparison of Modern Surgical Techniques in a Treatment of Myopia

Southeastern European Medical Journal
Aim: To examine whether there is a difference in the outcomes of surgical techniques photorefractive keratectomy (PRK), laser in situ keratomileusis (LASIK) and implantable collamer lens (ICL) for: short-term visual outcome after 6 months, long-term ...
Karla Bodakoš, Mateja Jagić, Antonio Kokot   +2 more
doaj   +1 more source

Predictive factors for efficacy and safety in refractive surgery for myopia.

PLoS ONE, 2018
PURPOSE:To evaluate the predictive factors for safety and efficacy in laser refractive surgery for myopia. SETTING:A singular refractive surgery center, at a University-affiliated tertiary medical center. DESIGN:Retrospective cohort study.
Nir Gomel, Shay Negari, Joseph Frucht-Pery, Denise Wajnsztajn, Eyal Strassman, Abraham Solomon   +5 more
doaj   +1 more source

Memristor‐Driven Active‐Matrix Organic Light‐Emitting Diode for Energy Efficient and High‐Resolution Displays

Advanced Functional Materials, EarlyView.
This study demonstrates that memristors can replace conventional 2T–1C driving circuits with simplified 1T–1 m architectures by exploiting resistance switching. With ultra‐low switching voltages (< ±0.2 V) and multi‐level resistance states, the memristors precisely control the current injected into organic light‐emitting diodes (OLEDs).
Dong Hyun Kim, Nahyun Kim, Seok Hee Hong, Ho Jin Lee, Jin Suk Oh, Jae Seong Park, Tae Geun Kim   +6 more
wiley   +1 more source

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Refractive and surgical outcomes of scleral buckling with or without vitrectomy in primary pseudophakic retinal detachment [PDF]

International Journal of Ophthalmology
AIM: To report the refractive and surgical outcomes of scleral buckling (SB) with or without pars plana vitrectomy (PPV) in patients with pseudophakic rhegmatogenous retinal detachment (PRRD).
Yu-Ta Lin, Yung-Jen Chen
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

The posterior chamber phakic refractive lens (PRL): a review

, 2013
Implantation of phakic intraocular lenses (pIOLs) is a reversible refractive procedure, preserving the patient’s accommodative function with minimal induction of higher order aberrations compared with corneal photoablative procedures. Despite this, as an
Cervino, A, Piñero, David P., R Brautaset, Perez-Cambrodi, RJ, Cerviño, Alejandro, Pérez Cambrodí, Rafael J., Ferrer Blasco, Teresa, Brautaset, R,, T Ferrer-Blasco, Brautaset, Rune, D P Piñero, Pinero, DP, A Cerviño, R J Pérez-Cambrodí, Ferrer-Blasco, T   +14 more
core   +1 more source