نتایج جستجو برای: corneal power

تعداد نتایج: 514507  

2017
Yuli Park Hyun Seung Kim

BACKGROUND To evaluate the torsional and flattening effect of steep meridian incisions and influence of posterior corneal astigmatism (PCA) on total corneal astigmatism (TCA) after cataract surgery. METHODS One hundred thirty-two eyes underwent cataract surgery with steep meridian 2.2 mm microcoaxial and 2.85 mm conventional clear corneal incisions. Eyes were divided into with-the-rule (WTR) ...

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2010
Thomas Maissen

SINCE THE PUBLICATION OF J. G. A. Pocock’s masterpiece, Machiavelli has been the founding father of the Atlantic republican tradition. For obvious reasons, however, the Florentine chancellor barely mentioned the states bordering the Atlantic in his works. When he studied the actions of great men, his sources were “a continual study of ancient history” and “a long experience of modern affairs,” ...

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2008
Kevin M Miller Michael D Olson

PURPOSE To compare the temperature profiles of 2 popular phacoemulsification units under similar operating conditions in water. METHODS The phacoemulsification probes of the Sovereign WhiteStar and Legacy AdvanTec were capped with water-filled test chambers and imaged side-by-side using a thermal camera. The highest temperature of each chamber was measured at several time points after power a...

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Journal: :African Vision and Eye Health 2016

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ژورنال: بینا 2020
, ,

Purpose: To determine the etiologic factors on rejection and failure rates and ocular surface changes after corneal transplantation by either DALK or PKP, in cases of keratoconus (KCN). Methods: In this cross-sectional study, considering the existing data, patients with keratoconus referring to Labbafinejad Medical Center from 2006 to 2016, who underwent corneal transplantation, were enrolled a...

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ژورنال: مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 2017
بخشی, حیدر, تیغ نورد بجاربنه, رقیه, داعی قزوینی, روشنک, سلطانی مقدم, رضا, صف آرا, مهین, محمودی, شهرام, کردبچه, پریوش,

Background: Keratomycosis is a fungal infection of the cornea which could be sight-threatening and even causes eye loss. Considering the high humidity and the dominance of agriculture as important predisposing factors of keratomycosis in north of Iran, this study was carried out for diagnosis of fungal keratitis in patients with corneal lesions in Rasht, Gilan province, Iran.  Methods: This de...

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2018
Samuel Arba Mosquera Diego de Ortueta Shwetabh Verma

Background In this retrospective randomized case series, we compared bilateral symmetry between OD and OS eyes, intercorneal differences and Functional Optical Zone (FOZ) of the corneal aberrations. Methods Sixty-seven normal subjects (with no ocular pathology) who never had any ocular surgery were bilaterally evaluated at Augenzentrum Recklinghausen (Germany). In all cases, standard examinat...

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ژورنال: مجله علمی دانشگاه علوم پزشکی همدان 2002
ذبیحی یگانه, حمیدرضا,

          This study was performed to evaluate the efficacy of anterior keratoplasty    with microkeratome in the improvement of visual acuity (V.A) in superficial    corneal disorders in patients admitted to Labbfi Nezhad hospital and Tehran    Bassir Clinic .         &nbs...

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ژورنال: یافته 2020
Bakhtiarnia, Marjan, Farokhi, Fardad, Jadidi, Khosrow, Maghooli, Keyvan,

Background: Keratoconus is a common complication among corneal defects. As a result of expeditious and extensive progress of medical science in recent decades, corneal ring implantation has turned into a successful surgical procedure to correct the vision of Keratoconus patients; however, selecting the right patient is essential in the success of the operation. The prediction of corneal conditi...

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Journal: :Medicine 2018

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