Results 221 to 230 of about 3,196,627 (365)

Prevalence of Refractive Errors Among School-Age Children and Adolescents in Saudi Arabia: A Systematic Review and Meta-Analysis. [PDF]

open access: yesClin Ophthalmol
Al Khathami A   +12 more
europepmc   +1 more source

Synthetic Chromatophores for Color and Pattern Morphing Skins

open access: yesAdvanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts   +5 more
wiley   +1 more source

Effects of atropine 0.01% on refractive errors in children with myopia. [PDF]

open access: yesHeliyon, 2023
Zhu X   +5 more
europepmc   +1 more source

Monolithic Terahertz Topological Mach‐Zehnder Interferometer

open access: yesAdvanced Materials, EarlyView.
A monolithic topological Mach‐Zehnder interferometer (MZI) is presented, integrating the splitter, combiner, and waveguide arms on a single chip. The interferometric fringes exhibiting high on‐off contrast with extinction ratios over 20 dB are achieved by utilizing tailored unit cells that facilitate interface‐dependent out‐of‐plane radiation losses ...
Nikhil Navaratna   +3 more
wiley   +1 more source

Prevalence of refractive errors in school-aged and preadolescent children in Colombia. [PDF]

open access: yesInt J Ophthalmol
Garcia-Lozada D   +3 more
europepmc   +1 more source

Visual consequences of refractive errors in the general population.

open access: yesOphthalmology (Rochester, Minn.), 2015
V. Verhoeven   +5 more
semanticscholar   +1 more source

Prevalence of refractive errors in teenage high school students in Singapore [PDF]

open access: bronze, 2003
Timothy Quek   +7 more
openalex   +1 more source

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