Results 321 to 330 of about 646,363 (390)

Diversity of Peripheral Refraction Patterns-Have These Been Oversimplified? [PDF]

Invest Ophthalmol Vis Sci
Antony M, Maldoddi R, Atchison DA, Verkicharla PK.   +3 more
europepmc   +1 more source

Global, regional, and national burden of refraction disorders: findings from the global burden of disease study 2021 and projections to 2050. [PDF]

BMC Public Health
Dai M, Ouyang Y.
europepmc   +1 more source

Myopia Correction, Myopia Control and Myopia Management: Definitions and Recommended Usage. [PDF]

Invest Ophthalmol Vis Sci
Flitcroft I, Bullimore MA, Gifford KL, Jonas JB, Jones D, Jones LW, Kang P, Resnikoff S, Walline J, Wildsoet CF, International Myopia Institute (IMI).   +10 more
europepmc   +1 more source

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Topological negative refraction of surface acoustic waves in a Weyl phononic crystal

Nature, 2018
Reflection and refraction of waves occur at the interface between two different media. These two fundamental interfacial wave phenomena form the basis of fabricating various wave components, such as optical lenses. Classical refraction—now referred to as
Hailong He, Chunyin Qiu, Zhengyou Liu
exaly   +2 more sources

Relative peripheral refraction in children: twelve‐month changes in eyes with different ametropias

Ophthalmic and Physiological Optics, 2013
Pauline Cho
exaly   +2 more sources

Refractive Miscalculation with Refractive Surprise [PDF]

, 2008
Although a refractive surprise due to an error in the sphere is quiet uncommon using excimer technology, its clinical impact may be devastating for the patient and the surgeon. There are several sources of mistakes that may cause a refractive surprise: a human source, laser-related condition, laser suite conditions, and the patient’s response to ...
Luis F. Torres, Gemma Walsh, Noel Alpins, Arturo Chayet   +3 more
openaire   +1 more source

Refraction and refractive surgery

Acta Ophthalmologica, 2009
AbstractAbstract not ...
openaire   +2 more sources

Ultra-High-Efficiency Anomalous Refraction with Dielectric Metasurfaces

, 2018
Anomalous refraction is a form of extreme waveform manipulation that can be realized with artificially structured nanomaterials, such as metamaterials or metasurfaces.
David Sell, Jianji Yang, Evan W. Wang, T. Phan, Sage Doshay, Jonathan A. Fan   +5 more
semanticscholar   +1 more source

Refraction and refractive errors in an elderly population

Ophthalmic and Physiological Optics, 1988
The data for this paper were collected during a two‐year study of the elderly in the market town of Melton Mowbray. The randomly selected subjects, aged 76 years of age and older, were found to be on average + 1.33 D hypermetropic and the average cylinder power was 0.82 D.
D.E. Shaw, A.R. Rosenthal, J.R. Lavery, J.M. Gibson   +3 more
openaire   +3 more sources