نتایج جستجو برای: corneal biomechanics

تعداد نتایج: 36340  

Journal: :Investigative ophthalmology & visual science 2017
Rohit Shetty Mathew Francis Rushad Shroff Natasha Pahuja Pooja Khamar Molleti Girrish Rudy M M A Nuijts Abhijit Sinha Roy

Purpose To evaluate transient corneal tissue healing and biomechanical changes between laser in situ keratomileusis (LASIK) and small incision lenticule extraction (SMILE) eyes. Methods In each patient, one eye underwent LASIK and the other underwent SMILE. Optical coherence tomography (OCT) and dynamic Scheimpflug imaging (Corvis-ST) was used to assess tissue healing and biomechanics, respec...

2011
Mohamed Hosny Mohamed Abdel Moneim Hassaballa Ahmed Shalaby

PURPOSE To evaluate corneal biomechanics with the Ocular Response Analyzer (ORA; Reichert Ophthalmic Instruments, Depew, NY) after penetrating keratoplasty (PK) and deep anterior lamellar keratoplasty (DALK). SUBJECTS AND METHODS Sixty-three eyes of 63 patients were included in this prospective comparative study. Patients were divided into 3 groups: the first included 21 eyes of normal subjec...

2017
Renato Ambrósio, Jr Fernando Faria Correia Bernardo Lopes Marcella Q. Salomão Allan Luz Daniel G. Dawson Ahmed Elsheikh Riccardo Vinciguerra Paolo Vinciguerra Cynthia J. Roberts

BACKGROUND Ectasia development occurs due to a chronic corneal biomechanical decompensation or weakness, resulting in stromal thinning and corneal protrusion. This leads to corneal steepening, increase in astigmatism, and irregularity. In corneal refractive surgery, the detection of mild forms of ectasia pre-operatively is essential to avoid post-operative progressive ectasia, which also depend...

2017
Farshad ASKARIZADEH Mohamad-Reza SEDAGHAT Hadi OSTADI-MOGHADDAM Foroozan NAROOIE-NOORI Tahereh RAKHSHANDADI Sattar RAJABI

The aim of this study was to analyze and compare corneal biomechanics in patients with bilateral keratoconus (KCN) with unilateral Vogt's striae. In this prospective contralateral study, visual acuity, refraction, and corneal biomechanical parameters were evaluated in patients with bilateral KCN with unilateral Vogt's striae using the Ocular Response Analyzer (ORA) (Reichert Inc., Buffalo, NY) ...

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