Results 21 to 30 of about 269,486 (164)

Concatenated Irregular Variable Length Coding and Irregular Unity Rate Coding [PDF]

, 2009
In this contribution we propose the novel serial concatenation of Irregular Variable Length Coding (IrVLC) and Irregular Unity Rate Coding (IrURC), where we matched the corresponding EXtrinsic Information Transfer (EXIT) functions to each other.
R. G. Maunder, L. Hanzo, Hanzo, L., Maunder, R. G.   +3 more
core   +1 more source

Vector analysis of Contoura Vision for the correction of myopia and myopic astigmatism [PDF]

International Journal of Ophthalmology, 2022
AIM: To evaluate the visual outcomes of Contoura Vision (CV) with automatic eye tracking system in eyes with myopia and myopic astigmatism. METHODS: This prospective study included 160 eyes (80 patients) with moderate myopia and irregular astigmatism ...
Ying Lin, Huan-Jun Su, Mu-Zhi Yuan, Yong Zhang   +3 more
doaj   +1 more source

Rare corneal complication following selective laser trabeculoplasty

American Journal of Ophthalmology Case Reports, 2018
Purpose: This case report describes two glaucoma patients who underwent selective laser trabeculoplasty (SLT) and developed a rare post-procedure corneal complication and subsequent permanent corneal distortions and reduced acuity.
Sarah Dougherty Wood, Angela Elam, Sayoko Moroi   +2 more
doaj   +1 more source

Near-capacity irregular variable length coding and irregular unity rate coding [PDF]

, 2009
In this contribution we introduce an EXtrinsic Information Transfer (EXIT) chart matching technique for the design of two serially concatenated irregular codecs, each constituted by a variety of component codes.
Hanzo, L., Maunder, R. G.
core   +1 more source

Clinical efficacy of implantation of toric intraocular lenses with different incision positions: a comparative study of steep-axis incision and non-steep-axis incision

BMC Ophthalmology, 2017
Background To compare the clinical outcomes after implantation of AcrySof Toric IOLs with different clear corneal incisions. Methods Sixty cataract patients with regular corneal astigmatism who underwent phacoemulsification combined with implantation of ...
Wenwen He, Xiangjia Zhu, Yu Du, Jin Yang, Yi Lu   +4 more
doaj   +1 more source

Effects of Lens-Induced Astigmatism at Near and Far Distances [PDF]

, 2023
Purpose: To investigate and compare the degradation of visual acuity (VA) in myopic presbyopes due to lens-induced astigmatism at near and at far distance. Patients and Methods: Fourteen corrected myopic presbyopes were recruited.
Vlasak, Natalia, Natalia Vlasak, Zeri, Fabrizio, Silvia Tavazzi, Fabrizio Zeri, Tavazzi, Silvia   +5 more
core   +1 more source

Irregular Astigmatism Management Using SPOT Scleral Lenses in the Treatment of Corneal Ectasia and Penetrating Keratoplasty

, 2021
International audiencePurpose: To evaluate the outcome of SPOT scleral lenses in the management of irregular astigmatism in patients with corneal ectasia and penetrating keratoplasty.
Coutu, Adrien, Romain Joubert, Dutheil, Frédéric, Frédéric Dutheil, Barriere, Jean-Vincent, Watson, Stephanie, Jean-Vincent Barriere, Frédéric Chiambaretta, Lambert, Céline, Stephanie L. Watson, Adrien Coutu, Valentin Navel, Chiambaretta, Frédéric, Céline Lambert, Navel, Valentin, Joubert, Romain   +15 more
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Mushroom keratoplasty and contact lens application: Strategy for management of a pediatric eye injury

Indian Journal of Ophthalmology, 2019
We show the challenging visual rehabilitation of a penetrating eye injury in a child with wide central corneal scar and aphakia. A 9-year-old male patient underwent combined surgery, including membranectomy with pupilloplasty and mushroom penetrating ...
Saverio V Luccarelli, Stefano Lucentini, Francesco Bonsignore, Paolo Nucci   +3 more
doaj   +1 more source

Estimation of final cylindrical spectacle correction by Pentacam

Function and Disability Journal, 2020
Background and Objectives: Keratoconus is a non-inflammatory asymmetric corneal degenerative disease characterized by the steepening and distortion of the cornea. In this disease, irregular astigmatism makes the subjective refraction difficult. Using the
Ali Mirzajani, Ramin Salouti, Ebrahim Jafarzadehpur , Raziye Dayyani   +3 more
doaj   +1 more source

PIDE-Working Papers: no. 2021:4. COVID-19, irregular migration and asymmetrical dependency [PDF]

, 2021
"This study explores the process of irregular migration that drives people to opt for illegal channels to migrate. The study further examines the impact of the COVID-19 pandemic on the socio-economic vulnerabilities of irregular migrant workers.
Iqbal, Nasir, Zulfiqar, Fahd
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