Results 21 to 30 of about 89,411 (180)

Comparison of ocular biometry measurements by applanation and immersion A-scan techniques

Journal of Current Ophthalmology, 2015
Purpose: The study compared ocular biometry values using applanation and immersion techniques to determine the most applicable method for our tertiary training centre where personnel with different levels of experience and expertise in biometry take ...
Dupe S. Ademola-Popoola, Donald A. Nzeh, Sadiat E. Saka, Lateefat B. Olokoba, Tokunbo S. Obajolowo   +4 more
doaj   +1 more source

Correlation of vitreous chamber depth with ocular biometry in high axial myopia

Indian Journal of Ophthalmology, 2022
Purpose: The proportion of axial length (AL) occupied by vitreous chamber depth (VCD), or VCD:AL, consistently correlates to ocular biometry in the general population. Relation of VCD:AL to ocular biometry in high myopia is not known. The purpose of this
Anusha Paritala, Brijesh Takkar, Nripen Gaur, Deepak Soni, Mohammad Hasnat Ali, Anubha Rathi   +5 more
doaj   +1 more source

Myopes have significantly higher serum melatonin concentrations than non-myopes [PDF]

, 2017
Purpose Experimental animal models of myopia demonstrate that higher melatonin (Mel) and lower dopamine (DA) concentrations actively promote axial elongation.
Ackermann, Atkinson, Ayaki, Baba, Barnard, Beck-Friis, Benavente-Pérez, Benloucif, Berg, Bertolet, Besharse, Breslin, Brown, Cahill, Chang, Chiba, Chua, Delgado, Dong, Eisenberg, Fan, Freedman, Guo, Hammond, He, Hua, Huang, Huang, Hughes, Iuvone, Jee, Kivelä, Lanyon, Logan, Lu, Mallen, Mao, Martin, McCullough, Megaw, Megaw, Nickla, Nickla, Ohngemach, Panda, Pendrak, Rada, Rao, Riefahn, Rohrer, Rose, Rudnicka, Sankaridurg, Skene, Stone, Stone, Stormann, Tosini, Trier, Verkicharla, Wahl, Wallman, Wang, Weiss, Wiechmann, Wiechmann, Wilson, Witkovsky, Wu, Xu, Zhang   +70 more
core   +2 more sources

Predictability of intraocular lens power calculation in eyes with average axial lengths: optical versus ultrasonic biometry

Delta Journal of Ophthalmology, 2019
Objective The aim of this study was to compare the partial coherence interferometry to ultrasound (US)-based biometry in intraocular lens (IOL) power calculation in eyes with average axial length (AL).
Amin F Ellakwa, Mohammed S Abd Elaziz, Marwa A Zaky, Waleed M Nagy   +3 more
doaj   +1 more source

Comparative Evaluation of Accuracy of Immersion A-scan Ultrasound Biometry and Optical Biometry in Cases Undergoing Small Incision Cataract Surgery [PDF]

Journal of Clinical and Diagnostic Research, 2019
Introduction: At present, refractive accuracy is the demand of cataract surgery which can be achieved by providing precise post-operative vision without spectacles.
Ajit Kamalakar Joshi, Abhishek Kumar Tripathi, Akshay Devendra Parashar, Sakshi Ravikant Patil   +3 more
doaj   +1 more source

Conjunctival ultraviolet autofluorescence area, but not intensity, is associated with myopia [PDF]

, 2019
Background:Conjunctival ultraviolet autofluorescence (CUVAF) has been used as a biomarker of time spent outdoors and smaller CUVAF area is associated with myopia in Southern Hemisphere cohorts.
Healy, Martin, Kearney, Stephanie, Laird, Eamon, O'Donoghue, Lisa, Pourshahidi, Laura K, Richardson, Patrick, Saunders, Kathryn J   +6 more
core   +2 more sources

Prevention and correction of residual refractive errors after cataract surgery

Journal of Clinical Ophthalmology and Research, 2017
Cataract surgery today has become more of a refractive surgery with high patient expectations and demand for independence from glasses. With advances in biometry, precise intraocular lens (IOL) power calculation is the most important step in achieving ...
Jeevan S Ladi
doaj   +1 more source

Refractive Outcomes after Cataract Surgery

Diagnostics, 2022
A post-operative manifest refractive error as close as possible to target is key when performing cataract surgery with intraocular lens (IOL) implantation, given that residual astigmatism and refractive errors negatively impact patients’ vision and ...
Ramin Khoramnia, Gerd Auffarth, Grzegorz Łabuz, George Pettit, Rajaraman Suryakumar   +4 more
doaj   +1 more source

Outcome of cataract surgery in Nigeria: visual acuity, autorefraction, and optimal intraocular lens powers--results from the Nigeria national survey.

, 2010
OBJECTIVE: To describe presenting and corrected visual acuities after cataract surgery in a nationally representative sample of adults. Another objective was to describe refractive errors in operated eyes and to determine the optimal range of intraocular
Gilbert, Clare E, Imam, Abdullahi U, Maini, Raj, Murthy, Gudlavalleti VS, Nigeria National Blindness and Visual Impairment Study Group, Rabiu, Mansur M, Sivasubramaniam, Selvaraj   +6 more
core   +1 more source

Wavefront Derived Refraction and Full Eye Biometry in Pseudophakic Eyes. [PDF]

PLoS ONE, 2016
To assess wavefront derived refraction and full eye biometry including ciliary muscle dimension and full eye axial geometry in pseudophakic eyes using spectral domain OCT equipped with a Shack-Hartmann wavefront sensor.Twenty-eight adult subjects (32 ...
Xinjie Mao, James T Banta, Bilian Ke, Hong Jiang, Jichang He, Che Liu, Jianhua Wang   +6 more
doaj   +1 more source