Results 261 to 270 of about 88,327 (313)

Clinical Safety and Efficacy of Orthokeratology Contact Lenses With Toric Peripheral Curves: A Review of the Literature. [PDF]

Eye Contact Lens
Michaud L, Harthan J, Shahidi A, Rah M, Reindel W.   +4 more
europepmc   +1 more source

Optical performance of enhanced monofocal intraocular lens in presence of low degree of corneal astigmatism. [PDF]

Indian J Ophthalmol
Neha N, Bari A, Sharma N, Sinha R, Maharana PK, Kaur M, Titiyal JS, Agarwal T.   +7 more
europepmc   +1 more source

Keratometry Changes Between Year Seven and Twelve After Corneal Crosslinking in Patients with Keratoconus. [PDF]

J Clin Med
Neuhann L, Vogel D, Dreyhaupt J, Kilani A, Enders C.   +4 more
europepmc   +1 more source

Autorefraction versus subjective refraction in high astigmatism. [PDF]

Int J Ophthalmol
Kangari H, Hashemi H, Rahmani S, Ahmadian E, Yekta A, Khabazkhoob M.   +5 more
europepmc   +1 more source

Corneal astigmatism agreement between a swept-source ocular coherence tomography and Scheimpflug-Placido based optical biometers. [PDF]

Int Ophthalmol
McLintock C, Uprety S, McKelvie J.
europepmc   +1 more source

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Astigmatism analysis and reporting of surgically induced astigmatism and prediction error

Journal of cataract and refractive surgery, 2022
Purpose: To provide a method for determining the vector that, when added to the preoperative astigmatism, results in no prediction error (PE) and to specify statistical methods for evaluating astigmatism and determining the 95% confidence convex polygon.
J. Holladay, R. Wilcox, D. Koch, Li Wang
semanticscholar   +1 more source

Vector analysis of moderate to high myopic astigmatism after small-incision lenticule extraction (SMILE): 12-month follow-up

European Journal of Ophthalmology, 2022
Purpose To evaluate the refractive outcomes of small-incision lenticule extraction (SMILE) surgery in moderate to high myopic astigmatism Study Design Prospective interventional case series Methods This study evaluated 111 eyes of 68 patients treated ...
M. Jabbarvand, M. Khodaparast, Zahra Moravvej, Kiyanoosh Shahraki, Hanieh Ahmadi, Kourosh Shahraki, A. Jamali, Foroozan Narooie-Noori   +7 more
semanticscholar   +1 more source

Effect of residual astigmatism on uncorrected visual acuity and patient satisfaction in pseudophakic patients

Journal of cataract and refractive surgery, 2020
In pseudophakic patients, even low amounts of residual astigmatism can increase the odds of not achieving 20/20 or 20/16 uncorrected distance visual acuity.
S. Schallhorn, Keith A. Hettinger, Martina Pelouskova, D. Teenan, J. Venter, Stephen J Hannan, J. Schallhorn   +6 more
semanticscholar   +1 more source

Astigmatism in Infants [PDF]

Science, 1978
Compared with children of school age, infants show ten times the incidence and considerably greater amounts of clinically significant astigmatism. The amount begins to decrease in the second semester of life, and the incidence declines during the third year. These unanticipated results bear on both the etiology and the neural sequelae of astigmatism.
Jane Gwiazda, Indra Mohindra, Indra Mohindra, J Brill, Richard Held   +4 more
openaire   +2 more sources

Age-Related Changes in Astigmatism and Potential Causes.

Cornea, 2020
Astigmatism causes deterioration of the retinal image and affects vision quality. Maintenance and improvement of visual function requires an understanding of the prevalence, age-related changes, and mechanisms of astigmatism.
Hiroyuki Namba, A. Sugano, Takanori Murakami, H. Utsunomiya, Koichi Nishitsuka, Kenichi Ishizawa, T. Kayama, H. Yamashita   +7 more
semanticscholar   +1 more source