Results 141 to 150 of about 42,051 (253)

Impact of central corneal astigmatism on postoperative visual outcomes in patients undergoing trifocal intraocular lens implantation

BMC Ophthalmology
Background To investigate the impact of central corneal astigmatism on postoperative visual outcomes in patients with trifocal intraocular lens (IOL) implantation.
Lan Wang, Jiaqi Meng, Jiao Qi, Dongling Guo, Yi Lu, Xiangjia Zhu   +5 more
doaj   +1 more source

Astigmatism management in cataract surgery with Precizon® toric intraocular lens: a prospective study

, 2016
Carolina Vale,1 Carlos Menezes,2 J Firmino-Machado,3 Pedro Rodrigues,2 Miguel Lume,1 Paula Tenedório,2 Pedro Menéres,1 Maria do Céu Brochado1 1Department of Ophthalmology, Hospital Geral de Santo António &ndash ...
Firmino-Machado J, Brochado MC, Menezes C, Rodrigues P, Menéres P, Lume M, Tenedório P, Vale C   +7 more
core  

Large‐Aperture, WFOV Broadband Achromatic Metalens Enabled by Forward Mapping Optimization and Hybrid Algorithmic Framework

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
A novel large aperture metalens design strategy achieves broadband achromatic imaging across the visible spectrum (400–680 nm) with a 100° field of view. By incorporating forward mapping optimization and a hybrid algorithm framework, this approach overcomes the limit between aperture size, field of view, and chromatic aberration correction, providing a
Zongyuan Chen, Wangzhe Zhou, Shaoqi Li, Yiyi Li, Nan Gu, Man Yuan, Junbo Yang   +6 more
wiley   +1 more source

Clinical outcomes and in vivo wavefront analysis of a toric transcleral plug-fixated intraocular lens using a pyramidal sensor aberrometer. [PDF]

J Cataract Refract Surg
de Angelis L, Romano V, Giansanti F, Virgili G, Della Porta M, Rizzo S, Barca F.   +6 more
europepmc   +1 more source

Demonstrating astigmatism [PDF]

Eye, 1996
openaire   +2 more sources

Changes of astigmatism in childhood

, 2007
Bakalaura darbs ir uzrakstīts uz 46 lapām, satur 41 attēlu, 10 tabulas,1 pielikumu un 33 atsauces uz literatūras avotiem. Atslēgas vārdi: astigmātisms, refrakcija, miopais astigmātisms, hipermetropais astigmātisms, jauktais astigmātisms. Mērķis: Parādīt,
Brence, Eva
core  

Agreement of keratometry measurements for toric IOL planning in routine clinical practice: KR-800, IOLMaster 500, and Pentacam HR. [PDF]

PLoS One
Lim Y, Hwang M.
europepmc   +1 more source

Comparison of Prediction Accuracy of Six Toric IOL Power Calculation Formulas, Including Four Available on the ESCRS Online Calculator. [PDF]

Clin Ophthalmol
Castro-Alonso FJ, Vián RH, Jiménez-García M, Marquina-Martín S, Puzo M.   +4 more
europepmc   +1 more source

Refractive Error Patterns and the Impact of Cycloplegia in Ametropic Children and Adolescents in Al-Baha, Saudi Arabia. [PDF]

Clin Optom (Auckl)
Alshehri JM, Alsulami II, Asiri FA, Alshihri M, AlRashah A, Abdu M, Allinjawi K, Alenezi BM, Alzahrani K.   +8 more
europepmc   +1 more source

A Descriptive Study of the Pattern of Refractive Errors, Amblyopia Burden, and Effective Refractive Error Coverage Among Children Attending a Tertiary Hospital in Northern Sri Lanka. [PDF]

Cureus
Muthusamy M, Jeyaratnam T, Thirunavukarasu K, Kumaran S, Uruthirakumar P, Kanmanirajah J, Kumutharanjan A.   +6 more
europepmc   +1 more source