Results 41 to 50 of about 260,600 (296)
Non-traumatic bilateral corneal flap dislocation 20 years after LASIK
BMC OphthalmologyBackgroud 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 +3 more
doaj +1 more source
Differential measurement of atmospheric refraction with a telescope with double fields of view
, 2015 For the sake of complete theoretical research of atmospheric refraction, the atmospheric refraction under the condition of lower angles of elevation is still worthy to be analyzed and explored.
Cao, Jian-Jun +4 more
core +1 more source
A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling +16 more
wiley +1 more source
Cooperative role of MDSCs and Tregs in alum-induced alloimmune tolerance in corneal transplantation
Scientific ReportsAlum, 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 +6 more
doaj +1 more source
The Role of Orthoptists in Refraction
British and Irish Orthoptic JournalPurpose: 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 +3 more
doaj +1 more source
Black and gray Helmholtz Kerr soliton refraction [PDF]
, 2011 efraction of black and gray solitons at boundaries separating different defocusing Kerr media is analyzed within a Helmholtz framework. A universal nonlinear Snell’s law is derived that describes gray soliton refraction, in addition to capturing the ...
Chamorro-Posada, P +2 more
core +2 more sources
Arthritis Care &Research, Accepted Article.Purpose The study aimed to identify symptom‐based predictors of dry eye disease (DED) signs in the Sjögrens International Collaborative Clinical Alliance (SICCA) cohort. Methods Retrospective analysis examining 16 ocular symptoms (most graded 0‐4) and artificial tear (AT) use (graded 0‐3) as predictors of DED signs [abnormal ocular surface staining ...
Pragnya R Donthineni +7 more
wiley +1 more source
OpticsBackground: 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 +5 more
doaj +1 more source
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
Evidence for a secondary bow in Newton's zero-order nuclear rainbow [PDF]
, 2014 Rainbows are generally considered to be caused by static refraction and reflection. A primary and a secondary rainbow appear due to refraction and internal reflection in a raindrop as explained by Newton.
Hirabayashi, Y., Ohkubo, S.
core +2 more sources