Results 241 to 250 of about 2,198,954 (282)

Comparison of the measurements of a novel optical biometry: Nidek AL-Scan with Sirius and a ultrasound biometry

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).
Sucattin Ilker Kocamis, Emre Demir, Cagatay Caglar   +2 more
exaly   +4 more sources

[Measurement of accommodation using optical biometry].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft, 2008
Making accommodation possible for all age groups is a topic of great interest. We applied optical biometry in order to study the physiological mechanisms in detail. Longitudinal relations in the optical axis were measured during accommodation in volunteers of different ages and lens states.A total of 60 subjects (children, adolescents, adults, and ...
A, Nurispahic, K, Kotliar, I, Lanzl
openaire   +3 more sources

Immersion ultrasound biometry vs optical biometry

Journal of Cataract & Refractive Surgery, 2022
Purpose: To compare axial length (AL) measurements obtained by optical biometry (OB) and immersion ultrasound (iUS) to investigate the agreement between the 2 techniques and how to use OB constants for eyes with AL by iUS. Setting: Multicenter study.
David L. Cooke, Rhonda Waldron, Giacomo Savini, Kamran M. Riaz, Leonardo Taroni, David A. Murphy, Fabio Guaraldi   +6 more
openaire   +2 more sources

Effect of eyedrops and applanation tonometry on optical biometry

Journal of Cataract & Refractive Surgery, 2021
Purpose: To determine whether eyedrops (phenylephrine, tropicamide, and fluorescein–proparacaine) and Goldmann applanation tonometry (GAT) have an effect on optical biometry measurements for preoperative cataract surgery workup. Setting:
Zacharia, Nayer, Amar, Bhat, Preet K, Sohal, Braedon, Murdock, Shelly H, Watson, David A, Belyea   +5 more
openaire   +2 more sources

Optical biometry in combined phacovitrectomy

Journal of Cataract and Refractive Surgery, 2009
To assess the accuracy of intraocular lens (IOL) power calculation using optical biometry in patients having combined phacovitrectomy for macular hole and macular pucker.Sunderland Eye Infirmary, North East England, United Kingdom.This single-surgeon retrospective case series review comprised eyes having combined narrow-gauge phacovitrectomy for ...
Sridhar R, Manvikar, David, Allen, David H W, Steel   +2 more
openaire   +3 more sources

Comparison of a new optical biometry with an optical low-coherence reflectometry for ocular biometry

Contact Lens and Anterior Eye, 2016
To evaluate the repeatability and agreement of a new partial coherence interferometry optical biometer (AL-Scan, Nidek CO, Aichi, Japan) with optical low-coherence reflectometry device (Lenstar LS 900, Haag-Streit AG, Köniz, Switzerland).Three consecutive measurements with the 2 devices were performed by the same examiner in 65 eyes of 65 patients with
Kulak, Ali Ender, Yuvarlak, Armagan, Hepsen, Ibrahim Feyzi, Guler, Emre, Totan, Yuksel   +4 more
openaire   +5 more sources

Agreement between lens thickness measurements by ultrasound immersion biometry and optical biometry

Journal of Cataract and Refractive Surgery, 2018
To compare lens thickness measurements provided by immersion ultrasound (US) biometry and optical biometry.IRCCS-Fondazione Bietti, Rome, Italy.Evaluation of diagnostic technology.Immersion US biometry and optical biometry were performed in a consecutive series of eyes having cataract surgery.
Giacomo, Savini, Kenneth J, Hoffer, Domenico, Schiano-Lomoriello   +2 more
openaire   +2 more sources

Effect of Cycloplegia on Optical Biometry in Pediatric Eyes

Journal of Pediatric Ophthalmology & Strabismus, 2018
Purpose: 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, Shantanu Kumar, Gupta, Anika, Gupta, Apurva, Goray, Varun, Saini   +4 more
openaire   +2 more sources

Influence of severity of nuclear cataract on optical biometry

Journal of Cataract and Refractive Surgery, 2006
To 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, Thomas, Neumayer, Wolf, Buehl, Barbara, Kiss, Stefan, Sacu, Wolfgang, Drexler, Oliver, Findl   +6 more
openaire   +2 more sources

Pseudophakic correction factors for optical biometry

Graefe's Archive for Clinical and Experimental Ophthalmology, 2001
The 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.
openaire   +2 more sources