نتایج جستجو برای: horizontal coma
تعداد نتایج: 72084 فیلتر نتایج به سال:
PURPOSE To investigate refractive outcomes and induction of corneal higher order aberrations (HOA) in eyes that underwent laser-assisted in situ keratomileusis (LASIK) for high hyperopia correction using an aberration neutral profile with corneal vertex centration and asymmetric offset. METHODS A total of 24 consecutive patients (38 eyes) who underwent LASIK by one surgeon using AMARIS 750S e...
PURPOSE To investigate the effect of orthokeratology on peripheral aberrations in two myopic volunteers. METHODS The subjects wore reverse geometry orthokeratology lenses overnight and were monitored for 2 weeks of wear. They underwent corneal topography, peripheral refraction (out to +/-34 degrees along the horizontal visual field) and peripheral aberration measurements across the 42 degrees...
We compared experimental wave aberrations in pseudophakic eyes with aspheric intraocular lenses (IOLs) to simulate aberrations from numerical ray tracing on customized computer eye models using corneal topography, angle lambda, ocular biometry, IOL geometry, and IOL tilt and decentration measured on the same eyes. We found high correlations between real and simulated aberrations even for the ey...
BACKGROUND The nosological assignment of congenital ocular motor apraxia type Cogan (COMA) is still controversial. While regarded as a distinct entity by some authorities including the Online Mendelian Inheritance in Man catalog of genetic disorders, others consider COMA merely a clinical symptom. METHODS We performed a retrospective multicenter data collection study with re-evaluation of cli...
EXTRACT When you are faced with a diabetic person that has been numbness, lethargic or confuse condition and Likely to enter into a diabetic coma what nursing interventions should be done? The answer of question is related to complete review of symptoms by nurses. Typically, in the most cases hypoglycemia can cause coma. The next cause of coma is diabetic ketoacidosis ...
Suggestions that peripheral imagery may affect the development of refractive error have led to interest in the variation in refraction and aberration across the visual field. It is shown that, if the optical system of the eye is rotationally symmetric about an optical axis which does not coincide with the visual axis, measurements of refraction and aberration made along the horizontal and verti...
Defining the patient outcome and decision making about allocation of our limited fund and technology for comatose patients depends on our knowledge about frequency and outcome of various coma etiologies. We determined the various coma causes frequency and one-month outcome of non traumatic coma. . In addition the co existence of the primary neurologic signs with the one-month outcome of non tra...
PURPOSE To compare the mean change in aberrations produced by a mechanical microkeratome and femtosecond laser. METHODS This was a retrospective study of 62 consecutive near emmetropic eyes that underwent LASIK and satisfied the following criteria: negligible laser ablation (for spherical equivalent of 0.00 to +0.50 diopters and maximum meridian of +0.50 diopters), and preoperative and at lea...
OBJECTIVES The aim of this study was to determine whether the assessment of pursuit eye movements in patients in minimally conscious state (MCS) is influenced by the choice of the visual stimulus (study 1) and by the moving plane (study 2). METHODS Patients with MCS (MCS- and MCS+) in the acute (<1 month post-injury) or chronic (>1 month) setting were assessed. The Coma Recovery Scale-Revised...
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