COMPARISON AND EVALUATION OF OCULAR BIOMETRY USING A NEW NON-CONTACT OPTICAL LOW COHERENCE REFLECTOMETER David Goldblum 1,3, Kaspar Rohrer 1, Rudolf Waelti.

Slides:

Advertisements

Similar presentations

Klinik und Poliklinik für Augenheilkunde All authors have no financial interest in the subject matter of this poster. R. Khoramnia, J. P. Salgado, C.P.

Advertisements

IN THE NAME OF GOD.

Comparison of intraocular lens power calculation formulas with LENSTAR LS 900® Tsunekazu Hamada Hamada Eye Clinic, Osaka, Japan Disclosure statement of.

Corneal topography orbscan

Corneal biomechanical properties and their association with intraocular pressure (IOP) and central corneal thickness (CCT) Dimitrios P. Bessinis 1, Pandelis.

Accuracy of Predicted Refractive Error in Resident-Performed Cataract Surgery Using Partial Coherence Interferometry Nickolas P. Katsoulakis, M.D., Paul.

A Prospective Trial Evaluating Scleral Rebound Tonometry Sara Duke, MD, Andrew Logeman, Shuchi Patel, MD Loyola University Chicago, Department of Ophthalmology,

Comparison of corneal astigmatism measured with 3 devices Mariko Shirayama, M.D, Li Wang, M.D, PhD, Mitchell P. Weikert, M.D, Douglas D. Koch, M.D. Cullen.

A simple and accurate method of alignment for toric intraocular lens implantation using anterior segment optical coherence tomography (OCT). Kazuno Negishi,

Eugene Ng, Arthur B. Cummings, Patrick P. Collins, Alexander V. Goncharov, Diana Bogusevschi, Chris Dainty, Michael C. Mrochen. The authors of this paper.

Purpose We studied the interdevice agreement of three systems in the different measurements of the corneal and anterior segment biometric parameters. The.

Development of an Apple iPhone IOL Calculator Application for Cataract Surgery Rony Gelman, MD 1, Richard E. Braunstein, MD 1 1 Department of Ophthalmology,

Progressive Multifocal Intraocular Lens G. Rubiolini M.D. Italy Disclosure of finanacial interest Author's research is partially funded.

Choosing the Proper Power for the IOL

Anterior Chamber Depth, Iridocorneal Angle Width, and Intraocular Pressure Changes After Phacoemulsification: Narrow vs Open Iridocorneal Angles Huang.

Personalised eye modelling for customised intraocular lens designs Matthew Sheehan, Eamonn O’Donoghue, Conor Sheil and Alexander Goncharov Photonics Ireland,

David Zadok MD, Isaac Avni MD

Variations in corneal biomechanical parameters and central corneal thickness during the menstrual cycle. David Zadok, MD, Yakov Goldich, MD, Yaniv Barkana,

A Prospective Trial Comparing Scleral Pneumotonometry to Goldmann Applanation Tonometry Sara Duke, MD, Usiwoma Abugo, BS, Shuchi Patel MD Loyola University.

Dept. of Ophthalmology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany. Outcome after big-bubble deep anterior lamellar keratoplasty.

Comparison of Orbscan and Ultrasound Pachymetry Measurements Faik Orucov, MD, Abraham Solomon, MD,Ziv Caspi, David Landau, MD, Eyal Strassman, MD, and.

TRANSPALPEBRAL TONOMETER APPLICATION DURING INTRAOCULAR PRESSURE EVALUATION IN THE PATIENTS WITH REFRACTION ANOMALY BEFORE AND AFTER KERATOPHOTOREFRACTIVE.

Hong Kong Eye Hospital Ms Frenchy Chiu Dr Victoria Wong IOL master

Oliver Findl 1,2, Nino Hirnschall 1,2, Alja Crnej 2 1 VIROS Vienna Institute for Research in Ocular Surgery, Hanusch Hospital, Vienna, Austria 2 Moorfields.

Sonia Yoo, MD 1 Fernanda Piccoli, MD 1 Artur Schmitt, MD 1 Takeshi Ide, MD 1 Tsontcho Ianchulev, MD 2 Authors have no financial interest in this subject.

Evaluation of refractive error measurements obtained by three different aberrometers Radha Ram, BA Li Wang, MD, PhD Mitchell P. Weikert, MD, MS Disclosure:

Phoebe D. Lenhart, M.D. 1, Amy K. Hutchinson, M.D. 1, Michael J. Lynn, M.S. 2, Scott R. Lambert M.D. 1 1 Department of Ophthalmology, Emory University,

Khairidzan Mohd Kamal MD

Variations in corneal biomechanical parameters and central corneal thickness during the menstrual cycle. Yakov Goldich, MD, David Zadok MD, Yaniv Barkana,

Reproducibility of Optical Measurements in Pseudophakic eyes Using Double-Pass Measurement System St Thomas Hospital, London Anish Dhital, David Spalton,

Endothelial Keratoplasty in Patients With an Anterior Chamber Intraocular Lens: A Montreal Experience Georges M. Durr, MD 1,2 Johanna Choremis, MD, FRCSC.

Comparison of Central Corneal Thickness and Peripheral Corneal Thickness using Sheimpflug system, Optical Coherence Tomography and Ultrasound Pachymetry.

Partial Coherence Interferometry Failure Rate in a Teaching Hospital Leslie A. Wei 1,2, BA, Nickolaus P. Katsoulakis 2, MD, Theodoros Filippopoulos 3,

The Effect of Corneal Anterior Surface Eccentricity on Astigmatism after Cataract Surgery Choul Yong Park MD 1 Sung Jun Lee MD 1 Prabjot Channa MD 2 Roy.

Naomi R. Goldberg, MD PhD Kenneth J. Wolf, MD Eric J. Wolf, MD FACS The authors have no financial interest in the subject matter of this poster. Comparison.

A Prospective Trial Comparing Pneumotonometry of Cornea and Sclera Usiwoma Abugo BS 1, Sara Duke MD 2, Shuchi Patel, MD 2 1 Loyola University Chicago,

Adriana S. Forseto1, MD Walton Nosé1,2, MD

Evaluation of Corneal Tomography in Primary Pterygium Sahil Goel, MD (Presenting Author), Murugesan Vanathi MD *The authors have no financial interests.

IOL Calculations Based on Partial Biometry in Humanitarian Missions Joseph Schmitz, MD Kimberly Davis, MD, FACS Scott McClatchey, MD The authors have no.

Futoshi Taketani, MD,PhD,

بسم اللة الرحمن الرحيم. Limbal relaxing incisions versus penetrating limbal relaxing incisions for the management of astigmatism in cataract surgery Sara.

LogMAR-Analysis of multifocal intraocular lenses: Clinical performance A. Mannsfeld, I.-J. Limberger, A. Ehmer, M.P. Holzer, G. U.Auffarth International.

Study of Flap Thickness Precision with a Femtosecond Laser Shinagawa LASIK Center Tatsuya Yonekawa,MSc ; Minoru Tomita,MD.PhD ; Youhei Iida,CE ; Yuko Inada,CE.

Financial Disclosure: Medical Director–Galilei R&D Consultant, Ziemer Group AG, Port, Switzerland Consultant & Territory Manager for.

Comparison of Central Corneal Thickness, Anterior Chamber Depth, and Central Corneal Power Measurements between Two Scheimpflug Imaging Systems Yuichi.

Minimizing Risk in Visian ICL Implantation.

Simulated Experiments on IOL Power Calculation Using Anterior Segment OCT Dong Hyun Jo, M.D., 1,2 Mee Kum Kim, M.D., 1,2 Won Ryang Wee, M.D. 1,2 1 Department.

Liquifaction Method and Extent of Posterior Capsule Opacification: Two-Year Follow-up Marie Kalfertova, Mariya Burova, Pavel Rozsival, Nada Jiraskova Nada.

Assessment of Anterior Segment Measurements with Swept Source Anterior Segment OCT Before and After Trabectome Surgery Handan Akil, Mayss Al-Sheikh, SriniVas.

Poster# P36 Comparison of Techniques of Measuring Anterior Chamber Depth and Corneal Curvature in Indian Eyes Sujata Das, MS, FRCS Anjula Kumari, B.Optom.

Intraocular Lens Outcomes: Comparison of Technologies and Formulas Carolina Eyecare Physicians, LLC Research Assistant Professor of Ophthalmology Storm.

Anterior Segment OCT in Strabismus

Characteristics of Primary Angle-Closure Glaucoma Patients with Normal Intraocular Pressure at the First Visit Won Hyuk Oh1, Bum Gi Kim1, Joo Hwa Lee2.

P-WT-294 Comparison of red-free photography, swept-source OCT and spectral-domain OCT for evaluation of retinal nerve fiber layer defects. Gilda WK Lai,

Corneal Pachymetry in Prediction of Refraction After Cataract Surgery

Refractive outcomes of intraoperative wavefront aberrometry versus optical biometry alone for intraocular lens power calculation Zina Zhang MD1, Logan.

Aug 11, 2017 Comparison of predictive accuracy on Partial coherence interferometry (PCI) and swpt-source optical coherence tomographry (SS-OCT) Choun-Ki.

Effect of Axial Length Measurement Method on Refractive Outcomes of Cataract Surgery: Real World Comparison of Partial Coherence Interferometry and Immersion.

The authors have nothing to declare

Comparison of Central Corneal Thickness measured by

Johnson CH TAN, MBBS, MRCSEd(Ophthalmology)

Comparison of corneal powers obtained from four different devices

The authors have no financial interest

Vicente J. Correa-Gomez MD, Guillermo Tapia MD, Oscar Macias Manuel MD, Alejandro Navas Perez MD, Gilberto Islas MD, Tito Ramírez-Luquin MD, Enrique O.

IN THE NAME OF GOD.

Yakov Goldich MD,Yaniv Barkana MD, Isaac Avni MD, David Zadok MD,

Deepak Vayalambrone FRCOphth

Khairidzan Mohd Kamal MD

The authors have no financial interest

The Effect of Corneal Thickness on Ocular Drug Penetration

Presentation transcript:

COMPARISON AND EVALUATION OF OCULAR BIOMETRY USING A NEW NON-CONTACT OPTICAL LOW COHERENCE REFLECTOMETER David Goldblum 1,3, Kaspar Rohrer 1, Rudolf Waelti 2, Isabelle Clemetson 1, Beatrice Frueh 1 1 Department of Ophthalmology, University of Bern and Inselspital, Bern, Switzerland 2 Haag-Streit, Bern, Switzerland 3 Department of Ophthalmology, University Hospital, Basel, Switzerland 1 Financial Support: Grant from the Haag-Streit Stiftung, Switzerland

INTRODUCTION Exact measurement of axial length is of key importance for the calculation of the refractive power of the intraocular lens for cataract surgery. At present two methods are used. Ultrasound biometry (UB) has been used for the last 35 years and optical biometry (OB) for the past 10 years. We report the first data of the new optical low coherence reflectometry biometry (OLCR-B) (Lenstar, Haag-Streit) measuring axial length applying OLCR-B. OLCR-B is based on a interferometry method using a broad band light source (typically nm broad). To evaluate this technique, we compared axial length (AL), anterior chamber depth (ACD), lens thickness (LT), and central corneal thickness (CCT) in a set of patients and volunteers.

METHODS OLCR-B (Lenstar LS 900, Haag-Streit), OLCR-P (optical low coherence reflectometry pachymetry, Haag-Streit), OB (IOLMaster, Zeiss), and UB (AL-3000, Tomey) were performed in 144 eyes of 80 patients and volunteers. 83 eyes had cataract (incipient, premature, mature), 28 eyes were pseudophakic, 5 aphakic, 14 eyes were silicon oil filled, and 14 were normal eyes. Among the patients and volunteers were 46 women and 34 men (age 20-90). There were no exclusion criteria. Patients and volunteers were placed on a chin rest to aim the measurement beam. Bland-Altman analysis was performed to investigate agreement of AL, ACD, LT and CCT measurements between the devices. Correlation between the techniques was also determined using linear regression. All measurements were performed according to the manufacturers recommendations. All examinations were approved by regulatory authorities as well as by the local and federal ethical commissions.. Image of the OLCR-B (Lenstar, Haag-Streit) Image of the OB (IOLMaster, Zeiss)

RESULTS The mean AL was for OLCR-B 24.1 mm (range ), OB 24.1 mm (range ), and UB 23.7 mm (range ); the mean ACD for OLCR-B 3.19 mm (range ), OB 3.17 mm (range ), and UB 3.08 mm (range ); the mean LT for OLCR-B 4.59 mm (range ), and UB 4.61 mm (range ); the mean CCT for OLCR-B 557 μm (range ), OLCR-P 557 μm (range ), and UB 553 μm (range ). Results of Bland- Altman and linear regression analysis of AL, ACD and CCT measurements are shown in Fig The average measurement time per patient was about 1 minute with OB and UB, and was faster with OLCR-B. CONCLUSION OLCR-B, OLCR-P, OB and UB give comparable results in cataractous, pseudophakic, siliconoil-filled and normal eyes. There are some differences in results of AL and CCT comparing OLCR-B and OB with UB.

Fig. 1a. Regression analysis: correlation of AL OB and AL OLCR-B Fig. 2a. Regression analysis: correlation of AL UB and AL OLCR-B Fig. 3a. Regression analysis: correlation of ACD OB and ACD OLCR-B Differences AL [mm] Differences ACD [mm] Lenstar LS 900 AL [mm] Lenstar LS 900 ACD [mm] IOLMaster AL [mm] IOLMaster ACD [mm] AL-3000 AL [mm] Mean AL [mm] Mean ACD [mm] SD SD SD SD SD SD Fig. 3b. Bland-Altman analysis: correlation of ACD OB and ACD OLCR-B Fig. 1b. Bland-Altman analysis: correlation of AL OB and AL OLCR-B Fig. 2b. Bland-Altman analysis: correlation of AL UB and AL OLCR-B

Fig. 4a. Regression analysis: correlation of ACD UB and ACD OLCR-B Fig. 4b. Bland-Altman analysis: correlation of ACD UB and ACD OLCR-B Fig. 5a. Regression analysis: correlation of CCT UB and CCT OLCR-B Fig. 5b. Bland-Altman analysis: correlation of CCT UB and CCT OLCR-B Fig. 6a. Regression analysis: correlation of CCT OLCR-P and CCT OLCR-B Fig. 6b. Bland-Altman analysis: correlation of CCT OLCR-P and CCT OLCR-B Differences ACD [mm] Differences CCT [  m] Lenstar LS 900 CCT [  m] Lenstar LS 900 ACD [mm] Lenstar LS 900 CCT [  m] AL-3000 AL [mm] AL-3000 CCT [  m] OLCR-P CCT [  m] Mean ACD [mm] Mean CCT [  m] SD SD SD SD SD SD