Results 241 to 250 of about 7,894 (276)
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Influence of severity of nuclear cataract on optical biometry
Journal of Cataract and Refractive Surgery, 2006To compare preoperative and postoperative measurements of the axial length (AL) performed with the IOLMaster (Carl Zeiss Meditec) to evaluate the effect of nuclear cataract on the optical biometry.Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.In 245 consecutive eyes of 162 patients scheduled for cataract surgery, type and ...
Ana, Prinz +6 more
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Effect of Cycloplegia on Optical Biometry in Pediatric Eyes
Journal of Pediatric Ophthalmology & Strabismus, 2018Purpose: To study the effect of cycloplegia on optical biometry parameters in pediatric eyes using the Lenstar LS 900 (Haag-Streit, Koeniz, Switzerland). Methods: In this observational and comparative study, 56 normal eyes and 20 cataractous eyes in children between 5 and 15 years ...
Usha K, Raina +4 more
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International Ophthalmology, 2016
To investigate the accuracy of the measurements of Nidek AL-Scan by comparing with Sirius (CSO, Florence, Italy), a corneal tomography which also employs the Scheimpflug principle, and a commonly used device, ultrasound biometry (UB) (Aviso A/B, Quantel Medical, MT, USA).
Çağlar, İsmail Çağatay +3 more
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To investigate the accuracy of the measurements of Nidek AL-Scan by comparing with Sirius (CSO, Florence, Italy), a corneal tomography which also employs the Scheimpflug principle, and a commonly used device, ultrasound biometry (UB) (Aviso A/B, Quantel Medical, MT, USA).
Çağlar, İsmail Çağatay +3 more
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Pseudophakic correction factors for optical biometry
Graefe's Archive for Clinical and Experimental Ophthalmology, 2001The IOLMaster of Carl Zeiss Jena, which has recently become available, is a combined instrument for biometry and intraocular lens (IOL) planning for cataract surgery utilizing partial coherence interferometry for measuring axial length. Whereas measurement data from classical ultrasound biometry, e.g.
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Ultrasonic biometry of the optic nerve diameter
Orbit, 1986The results of the authors' echographic biometry of the optic nerve diameter agree with the different pathophysiological conditions. the method is especially helpful in diseases with secondary changes of the optic disc, such as swelling or atrophy. It gives special information through follow-up in neuritis or optic nerve compression.
Sadanao Tane, Jun Horikoshi
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Journal of Cataract and Refractive Surgery, 2003
To compare measurements performed with the IOLMaster (Carl Zeiss, Meditec AG) with those obtained by applanation ultrasound (US) and manual keratometry and to evaluate the effect of operator experience on US biometry.Department of Ophthalmology, University of Vienna, Vienna, Austria.The axial length (696 eyes) and anterior chamber depth (ACD) (462 eyes)
Oliver, Findl +11 more
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To compare measurements performed with the IOLMaster (Carl Zeiss, Meditec AG) with those obtained by applanation ultrasound (US) and manual keratometry and to evaluate the effect of operator experience on US biometry.Department of Ophthalmology, University of Vienna, Vienna, Austria.The axial length (696 eyes) and anterior chamber depth (ACD) (462 eyes)
Oliver, Findl +11 more
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Ray tracing in ellipsoidal reflectors for optical biometry of media
Applied Optics, 2017In this paper, an analytical basis of ray tracing for optical biometry of media by ellipsoidal reflectors was developed. A ray-tracing algorithm was created, which involves determining the point of interaction of the incident beam with the ellipsoidal reflector, calculating the direction of the reflected beam, and determining the intersection point of ...
M. A. Bezuglyi +2 more
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Acta Ophthalmologica
Ocular biometry is a diagnostic method in ophthalmology that uses various techniques to measure the different parts of the eye. It involves the use of instruments that can measure the axial length of the eye, corneal curvature, anterior chamber depth, and other parameters related to the eye's structure.
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Ocular biometry is a diagnostic method in ophthalmology that uses various techniques to measure the different parts of the eye. It involves the use of instruments that can measure the axial length of the eye, corneal curvature, anterior chamber depth, and other parameters related to the eye's structure.
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Celebrating 25 Years of Optical Biometry: A Milestone in Ophthalmology
Klinische Monatsblätter für AugenheilkundeAbstractOptical biometry has fundamentally transformed cataract surgery, and 2024 marked 25 years since the introduction of the first optical biometer. In the early 1980 s, Fercher and colleagues pioneered the optical noncontact eye length measurement, leading to the first interferometric A-scan of the eye. This innovation, patented and later developed
Sibylle Katharina Scholtz +2 more
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Optical biometry of biological tissues by ellipsoidal reflectors
SPIE Proceedings, 2013Possibilities of measuring systems that uses ellipsoidal reflectors for determining the optical parameters of biological tissue are studied. The modified inverse Monte Carlo method was designed for biomedical photometric system “biological tissue - ellipsoidal mirror”.
M. A. Bezuglyi, N. V. Pavlovets
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