Results 21 to 30 of about 3,126,101 (267)
Validation of a new objective method to assess lipid layer thickness without the need of an interferometer. [PDF]
Graefes Arch Clin Exp Ophthalmol, 2022 Abstract Purpose This study aimed to develop and validate new metrics to objectively assess the lipid layer thickness (LLT) through the analysis of grey intensity values obtained from the Placido disk pattern reflected onto the tear film.
García-Marqués JV +3 more
europepmc +4 more sources
Tear Film Changes after Dacryocystorhinostomy Using Ocular Surface Analyzer [PDF]
Al-Azhar International Medical Journal, 2023 Background: Tear film experience some changes after dacryocystorhinostomy. Detecting these changes is mandatory to reach the proper treatment and good postoperative outcomes.Objective: This study aims to detect changes in the tear film in patients after ...
Omar AbdRabbou +2 more
doaj +1 more source
Frontiers in Medicine, 2022 PurposePrevious studies suggest that overnight orthokeratology (OOK) may be detrimental to tear function. We aimed to investigate the effect of OOK on lipid layer thickness (LLT), blink pattern, and meibomian gland and elucidate the relationship of these
Haozhe Yu +8 more
doaj +1 more source
In vivo thickness measurement of the lipid layer and the overall tear film by interferometry [PDF]
Optics Letters, 2019 New approaches for the simultaneous measurement of the thickness of the lipid layer (LL) and overall tear film (TF) in vivo are needed. In the current research, the interference signal from the ocular surface was analyzed and simplified as the superposition of two sinusoidal functions.
Yuqiang, Bai, Jason J, Nichols
openaire +2 more sources
Determination of Tear Lipid Film Thickness Based on a Reflected Placido Disk Tear Film Analyzer
Diagnostics, 2020 This study aims at determining the thickness of the tear lipid layer (LL) observed from a placido-disc-based tear film analyzer. We prospectively collected reflections of placido-disk LL images using a tear film analyzer (Keratograph® 5M, Oculus) from ...
Pin-I Fu +7 more
doaj +1 more source
BioMedical Engineering OnLine, 2018 Background The outermost layer of the tear film consists of a thin lipid layer (LL). The lipid layer serves as a barrier against evaporation of the aqueous component of the tear film. The ability to simultaneously image both the lipid layer thickness and
Yuqiang Bai +4 more
doaj +1 more source
Correlation of the retinopathy degree with the change of ocular surface and corneal nerve in patients with type 2 diabetes mellitus [PDF]
International Journal of Ophthalmology, 2021 AIM: To investigate the change of ocular surface and corneal nerve and their correlation in patients suffering from type 2 diabetes mellitus under different degrees of retinopathy.
Jia-Xin Han +3 more
doaj +1 more source
Molecular Interaction of a New Antibacterial Polymer with a Supported Lipid Bilayer Measured by an in situ Label-Free Optical Technique [PDF]
, 2013 The interaction of the antibacterial polymer–branched poly(ethylene imine) substituted with quaternary ammonium groups, PEO and alkyl chains, PEI25QI5J5A815–with a solid supported lipid bilayer was investigated using surface sensitive optical waveguide ...
Éva Kiss +14 more
core +1 more source
, 2022 Meibomian gland loss at 1 and 5 months after surgery remained unchanged from preoperative meibomian gland loss (24.2% vs. 23.0% at 1 month and 24.2% at 5 months after surgery, respectively, all P > 0.05).
Ho-Seok Sa (12306488) +6 more
core +1 more source
The thickness of the calcified layer in different joints of a single individual [PDF]
, 1987 The thickness of the articular cartilage and its calcified zone were both measured at specially chosen places in several limb joints from five subjects.
Müller-Gerbl, Magdalena +2 more
core +1 more source