Eye care - getoct.com - professional messages
By Peter Maloca
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Podcast Description
getoct.com is specialized in Optical Coherence Tomography (OCT), a new laser microscope that carefully examines the eyes. Explore OCT images, films and tutorials and find the latest news about vision, eye diseases and modern eye technology.
| Name | Description | Released | Price | ||
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| 1 | VideoInterpretation of OCT images-OCT pitfalls 3 | Changing life! In his third part of pitfalls with OCT, it is shown how careful one must be with the interpretation of OCT images. We must not be satisfied only with beautiful pictures. You have to go into details and see and read the pictures like a book to get the correct diagnosis. Then, OCT will be an exciting experience that can change lifes. Pitfalls with OCT getoct academy part 3 (download video tutorial) http://youtu.be/mC2trMdbG_U Copyright © 2012 getoct™ Ltd. All rights reserved. | 2/3/12 | Free | View In iTunes |
| 2 | VideoInterpretation of OCT images-OCT pitfalls 2 | Interpretation of OCT is awareness! Interpretation of an OCT image means brightening of something, explaining and laying out the findings. OCT images are some kind of a transmitter, the interpreter is the receiver of an hidden information. Your answers to an OCT image are linked to your experiences, your interest and willingness to lay down the blinders and your prejudices. The answer to a question also affects the other answers. Put nothing into the image what is not there! It's a challenge to record a good OCT image. The even greater challenge is the correct interpretation! A major risk ist the danger of subjectivity and a rapid satisfaction. Search the challenge of OCT images! Nothing is more boring in your career as an eye doctor when you do the same every day. Pitfalls with OCT part 2 optical coherence tomography getoct (summary, PDF) Pitfalls with OCT getoct academy part 2 As a source of enlightenment: getoct.com database A big help is to consider as many OCT images as possible to achieve a "cerebral calibration ". Hundreds of annotated OCT images and videos are waiting to be discovered, through you. Don't miss anything really occurring Dr. Hasler says at the getoct academy 2011, that a perfect instruction of the patient leads to good OCT images. You have first to prepare a good timing to start the recording at the right moment. It is of advantage to get both: OCT scan and corresponding infrared image of the fundus. These images are linked to each other and improve the orientation. If the scans are not perfect, it is worthwhile to start again. Immediately delete useless images to keep your computer clean. Highly myopic eyes are difficult OCT scanners are designed for normal-sighted eyes and sometimes have a button for highly myopic eyes. An oblique cut makes the algorithm work hard and leads more frequently to errors. Thus one has to check only the individual cross-sections of whether the algorithm has done his work satisfactorily. The quality of an individual OCT cut influences the construction and the representation of the three-dimensional volume. If the cross section is poor in quality, the 3D representation is useless. 3D images are a summary of cross-sections and if they look strange you have to switch back and look at the cross section level. The OCT scanner analyzes the samples using an algorithm, so a „ simple calculation method“. The 3D OCT has the advantage that you can quickly scroll through a lesion, to detect and to estimate the dimensions and to identify mistakes easier. In addition, 3D OCT is a good training to discover the anatomy of the eye and the problem is explained in an impressive way to the patient. Interpretation of OCT The most difficult task is the correct interpretation of the OCT images. There is an enormous achievement to get a good OCT image. Good interpretation is a real challenge. Dr. med. Peter Maloca recommends a multi-stage procedure for an accurate diagnosis: Checklist OCT pre-interpretation: 1. OCT practice: Only practice makes perfect! Who does not look exactly on OCT images, will never learn it. 2. OCT network - calibration Get in touch with experienced OCT users. Visit an OCT congress, for example the annual getoct academy in Lucerne (in German) and join the community at getoct.com. Upload your pictures to getoct.com, ask the community. OCT interpretation in 5 getoct steps by Dr. med. Peter Maloca: 1. Orientation: where are you? For a proper assessment of OCT images you have to orient yourself first. Say nothing of what you can not prove or show on the OCT images! 2. Findings: describe only what you really see in simple words. 3. Summarize the findings 4. Link the findings to a diagnosis (interpretation) 5. Be honest: self-criticism/what else? Be honest! Say nothing what you have not checked for alternatives! Don’t skip lesions! Twist nothing! There are no stupid questions. | 1/29/12 | Free | View In iTunes |
| 3 | Interpretation of OCT images-OCT pitfalls 1 | Main problem in OCT (optical coherence tomography) is that things are interpreted in the pictures, they really do not exist. Pitfalls with OCT, technical aspect, case presentation, view video from getoct academy 2011. N: Pitfalls with OCT getoct academy part 1 Interpretation of OCT images-OCT pitfalls 1 (Video) Pitfalls with OCT part 1 optical coherence tomography getoct (summary, PDF) It's a great honor to welcome Dr. med. Pascal Hasler, Basel, at the 6th getoct academy in Lucerne/Switzerland. The problem with OCT congresses is, that everything looks wonderful. Everyone seems to know everything and no one dares to admit mistakes. Therefore, Dr. Pascal Hasler will show you in this video pitfalls using OCT. In the first part technical aspects are discussed. In the second part pitfalls of interpretation are shown. Therefore it is important that there are such courses as the practice-oriented getoct academy in Lucerne! Dr Hasler says that there are four main sources of error using OCT: patient dependent, cooperation between patient and examiner, wrong scanner settings and above all interpretation of OCT images, which is an extraordinary challenge. Here is a summary of Dr. Hasler speech, held at the 6. getoct academy 3 December 2011: Pitfalls with OCT, technical aspect, case presentation 1. Sources of error in patient miosis: OCT in miosis is possible, but difficult due to lower signal strength, no accurate centering of laser beam small interpalpebral space/ptosis in dry eye use of moisturizing eyedrops before scanning wrong indications for OCT: with vitreous hemorrhage OCT is practically impossible 2. Cooperation between patient and examiner: poor visual acuity is equally to poor fixation: expand inner fixation target, use external fixation light restless patients: shorten scanning, ask for assistance to fix the head alternatively use the quick scan mode even when you loose image quality scan rather an individual, low qualitiy cross scan than a fullrange measurement 3. Wrong settings on OCT scanner: choose corresponding diopters, may be set automatically the centering should be focused on the hot spot orthogonally if possible measurement on correct eye and correctly stored choose the right scan protocol: in children, one must often use protocols others than in adults observe the quality of the scan signal observing the intensity chart OCT is also useful for advanced cataract to evaluate the retina because the wavelength of the laser light is not so impeded by the cloudiness oft he cataract. 4. Interpretation of OCT The most difficult task is the correct interpretation of the OCT images. There is an enormous challenge to get a good OCT image. Still, good interpretation of OCT iamges is an extraordinary challenge! Checklist OCT by Dr. Peter Maloca: Dr. med. Peter Maloca recommends a multi-stage procedure for an accurate diagnosis: 1. First patient data Is it the right patient (name, age)? Is it the right eye? 2. Anatomy Where are normal, healthy structures? Where are different structures? Signs of activity (thickening, accumulation)? 3. Descriptive diagnosis Try to describe the nature of the different structures first without trying to make a diagnosis: "I see a fine line that runs to the center of the retina, where spaces are present and there is a gap in the center of the retina" 4. Working diagnosis - differential diagnosis Count for possible diagnoses. Which is less? What is rare is rare. Ask your colleagues. Upload some images to getoct.com and ask your getoct friends. 5. Diagnosis, synopsis Which diagnosis is best suited to clinical picture and the other results? 6. Follow-up What happens during the next time? The biggest mistake in OCT is to ask: does the OCT suits my diagnosis instead of matches my diagnosis to the OCT? *** Dr med. Peter Maloca empfiehlt ein mehrstufiges Verfahren zur korrekten OCT-Diagnose: | 1/22/12 | Free | View In iTunes |
| 4 | Diagnose am Auge mit OCT (optical coherence tomography) | Früherfassung ist der Schlüssel, um die Augen vor dauerhaftem Schaden zu beschützen. Download als PDF: Diagnose am Auge mit Optischer Kohärenztomografie (OCT, PDF) Einführung Für viele Menschen ist die Erblindung oder der hochgradige Sehverlust der schlimmste denkbare Schicksalsschlag, oft noch gefürchteter als Krebs oder der Tod. Für die meisten Patienten gibt es aber heute sichere Diagnose- und Therapiemöglichkeiten, um eine Sehverschlechterung oder eine Erblindung zu vermeiden. Ein Augenarzt kann das Ausmass von krankhaften Veränderungen des Auges meistens nur abschätzen. Durch OCT (Optische Kohärenz Tomographie) hat er aber ein Instrument zur Verfügung, mit welchem er in kurzer Zeit, völlig unschädlich das Auge genau zu vermessen kann. Dabei ist es nicht notwendig, das Auge zu berühren. Es gelingt ein neuartiger Einblick in die kleinsten Ebenen des Auges. Was ist OCT? OCT ist die Abkürzung von „optical coherence tomography“ und ist mit einem Ultraschall vergleichbar. Nur wird statt Schallwellen ein spezielles und völlig unschädliches Laserlicht verwendet. Das Laserlicht besteht aus zusammenhängenden (kohärenten) Lichtwellen (optisch) zur Erzeugung von Schnittbildern (Tomografie). In der ersten Generation von OCT-Systemen erfolgte die Abtastung des Signals in Korrelation zu einem sich rasch bewegenden Spiegel. Dies beanspruchte mehr Zeit und führte zu mehr Artefakten, da einerseits Bewegungen des Patienten störten und andererseits die relativ geringe Auflösung viele Details nicht darstellen vermochte. Bei den neuesten Geräten mit Spectral-Domain-Technologie (SD-OCT) werden die vom Gewebe zurückgestreuten Spektralkomponenten mithilfe einer Fourrier-Transformation sofort aufgeteilt und in Bildsignale umgewandelt. Dies führt zu einer höheren Scangeschwindigkeit, einer deutlich besseren Auflösung der Netzhautschichten und ermöglicht gleichzeitig eine Analyse von dreidimensionalen Datenwürfeln, ohne dass der Patient wesentlich beeinträchtigt wird. Spectral Domain OCT ist die bildgebende Technologie der neuesten Generation. Das Licht einer Breitbandquelle wird in einem Interferometer mit festem Referenz- und abtastendem Probenarm gekoppelt. Das resultierende Signalmuster wird im Spektrometer blitzschnell aufgespalten und im Detektor aufgenommen. Es entstehen sofort hochaufgelöste Bilder mit bis zu 60000 Scans pro Sekunde. Wie läuft eine OCT-Untersuchung ab? Oft wird die Hornhaut vor der OCT-Messung mit befeuchtenden Augentropfen behandelt. Der Patient behält seine Kleider an, setzt sich an das Gerät, stützt sein Kinn und seine Stirne gegen eine Halterung ab. Er blickt dann ins Gerät hinein, wo meist ein Lichtkreuz zur Fixierung erscheint. Es soll zwei drei Mal gut geblinzelt werden, um die Hornhaut feucht zu halten und für eine ideale Messung bereitzuhalten. Der Untersucher zählt auf drei, drückt zum vereinbarten Zeitpunkt auf einen Knopf, um die Messung auszulösen und der Patient öffnet seine Augen maximal. Eine Messung dauert wenige Sekunden. Messzyklen benötigen zwischen 1 bis 10 Minuten, je nach Fragestellung. Meistens werden beide Augen untersucht, um einen Seitenvergleich zu ermöglichen. Die Bilder werden ausgedruckt, dem Patienten ausführlich erklärt und mitgegeben. Zudem werden die Bilder gespeichert und stehen für Folgeuntersuchungen zur Verfügung. Ist OCT schädlich? OCT ist wohl eine Lasertechnologie, doch sind die verwendeten Laserenergien sehr schwach, sodass prinzipiell keine Schäden zu erwarten sind. Die Messung erfolgt berührungslos und dauert nur wenige Minuten. Oft kann auf eine Pupillenerweiterung verzichtet werden, was bei gewissen Glaukomformen von Vorteil ist, da eine plötzliche Steigerung des Augeninnendruckes verhindert werden kann. Patienten mit trockenen Augen, berichten in seltenen Fällen von verstärktem Trockengefühl. Dies kann vom Augenarzt erkannt und behandelt werden. OCT ist patientenschonend, vollkommen schmerzlos | 12/30/11 | Free | View In iTunes |
| 5 | Newsletter about OCT | We are very pleased if you subscribe to our professional newsletter about ophthalmology and OCT. Take the opportunity to get exciting informations: Subsribe getoct newsletter here View all newsletters: OCT Download our newsletters getoct.com 1 getoct news 12 2011 (Christmas cataract, iTunes, OCT Blog, register getoct) 2 getoct news 1 2012 (best OCT scanner, pitfalls with OCT part 1, register getoct) 3 getoct news 2 2012 (interpretation, pitfalls with OCT part 2, high myopia, algorithm, login) Copyright © 2012 getoct™ Ltd. All rights reserved. | 12/22/11 | Free | View In iTunes |
| 6 | VideoChristmas tree cataract in OCT case of the month 12.2011 | Cataract is a very common, but treatable cause of poor vision. Often, in elderly patients the visual acuity is reduced due to a macular degeneration, too. With OCT it can be decided whether the cataract surgery may be useful, for example, in case of dry or atrophic macular degeneration. Since the OCT laser beam can easily pass through the cloudy lens, OCT may be sometimes more worth than biomicroscopy. Question: in this case, is the reduced visual acuitity only caused by cataract? Should surgery be performed in every cataract? Answer: cataract in this patient is clearly visible on biomicroscopy, one may think that OCT is not needed. But in additional OCT an age related macualer degeneration is shown and quantified, too. Particularly, the outer segment receptors are not well seen even in OCT due to AMD and less due to the cataract, but actually no exudation can be detected. A cataract surgery may be well recommended. But it is very important to make the patient clear previously that an "eagle eye" never will be possible because of the atrophic maculopathy. Many patients still hope for a miracle, especially if they are confronted with advertising and cataract surgery is trivialized by physicians or other patients. But still with the fact, that cataract surgery is so save to the patient of today, a quiet conversation between doctor and his patient is needed to clear out of the way unrealistic hopes. Otherwise only frustrations arise on both sides. OCT may help to illustrate the findings and to ensure a good relationship between the doctor and his patient. And above all, an easily follow up will be possible to collect converts from a dry to a wet AMD at an very early stage and save vision. Case of the month 12.2011 christmas tree cataract Copyright © 2012 getoct™ Ltd. All rights reserved. | 12/22/11 | Free | View In iTunes |
| 7 | VideoEinladung 7. getoct academy 24.11.2012 | Aus eigenen Fehlern lernen! Einladung zu unserem praxisnahen und persönlichen Augenkongress. Ort: Conference Center, Verkehrshuas Luzern. Datum: Samstag, 24.11.2012, zeit: 09.00-17.00 Uhr. Anmeldung: http://www.blueyetech.ch/getoct.asp. Einladung 7. getoct academy 24.11.2012 | 12/4/11 | Free | View In iTunes |
| 8 | VideoWinner getoct photo award 2011 | The winner of the getoct photo award 2011 is announced! Petra Tschofen winner getoct award 2011 Petra Tschofen Photographer, and Claudia Kälin, Makeup Artist, are the happy winners, again! Photo award getoct 2011 | 11/27/11 | Free | View In iTunes |
| 9 | Video“Snake eye” arteria hyaloidea | In the embryonic stage the inside of the eye is supplied with fine vessels, reaching from optic nerve to the lens (tunica vasculosa lentis). Usually these vessels atrophy completly before birth. However, remnants of the hyaloid artery may still be present, seen as Mittendorf's dot at the posterior surface of the lens or Bergmeister's papilla. Normally there is no active blood flow, but sometimes vitreous haemorrhage and retinal detachment may occur due to traction. The retrolental dots alone do not develop into a cataract, but in some advanced cases posterior cataract develops decreasing visual acuity. In long-standing cataract surgery is not often recommended, because the visual acuity gain seems to be limited. http://youtu.be/XFVzXiVbAeI In this patient, however, formerly a slightly better visual acuity was described. She got only new spectacles from her optician since years and signed up only at the ophthalmologist at an age of 62 years (!) as they helped anymore. She was disturbed by glare and blurr, so that the cataract surgery was performed because she reported a better visual acuity some years before. Fortunately, she benefited extraordinary: a gain in visual acuity from 0.1 to 0.6! "I've seen in my entire life never better," she said. This big win was not predictable, but very enjoyable. Snake eye arteria hyaloidea getoct Snake eye arteria hyaloidea getoct Copyright © 2012 getoct™ Ltd. All rights reserved. | 9/23/11 | Free | View In iTunes |
| 10 | VideoMatterhorn lens | Abnormal lens formation: The normal anterior spherical curvature of the lens is replaced by an abnormal conical or spherical forward protrusion, in this case like the famous Swiss Matterhorn. Matterhorn Lens getoct.com Copyright © 2012 getoct™ Ltd. All rights reserved. | 8/14/11 | Free | View In iTunes |
| 11 | What about diabetes, the eye and OCT? | Despite diabetes with a optimal setting one can have a virtually normal life. The decisive factor is the specific cooperation between the patient and the ophthalmologist. Regular checkups by an ophthalmologist are essential. What about diabetes, the eye and OCT? | 2/19/11 | Free | View In iTunes |
| 12 | Was ist mit Diabetes, Auge und OCT? | Trotz Diabetes kann bei optimaler Einstellung ein praktisch normales Leben geführt werden. Bei jedem Diabetiker entsteht dennoch früher oder später eine diabetische Retinopathie. Entscheidend ist die gezielte Zusammenarbeit zwischen dem Erkrankten und seinem Augenarzt. Unabdingbar sind regelmässige Kontrolluntersuchungen durch den Augenarzt. Was ist mit Diabetes und Auge (Deutsch, 4MB) | 2/19/11 | Free | View In iTunes |
| 13 | VideoCase of the month 1 2011 getoct.com | Case of the month 1 2011 getoct.com | 1/7/11 | Free | View In iTunes |
| 14 | Guide interpreting SD OCT getoct academy Lucerne | This document is kindly provided by Carl Zeiss in cooperation with Prof. Lumbroso at the 5. getoct academy 2010 in Lucerne, Switzerland. Only for personal use. The user warrants that he/she shall not reproduce, publish, broadcast, sell, retransmit, or in any other way commercially exploit any information herein. © 2010 Prof. Lumbroso. All Rights by Prof. Lumbroso & Carl Zeiss. Enjoy: getoct 2010 supported by Carl Zeiss (PDF, 5MB) | 1/4/11 | Free | View In iTunes |
| 15 | VideoKein Karunkeltumor! | Ein dunkler pigmentierten Tumor der Karunkel mit Wachstumstendenz in den vergangenen Monaten, zeigte klinisch der Verdacht auf einen Naevus oder Melanom. Wegen der unklaren Situation und der Vergrössserung wurde eine nosologische Diagnose gesucht und die Exzision empfohlen. In der Histologie waren erstaunlicherweise alle Marker für melanozytäre Zellen negativ (S110, HMB45, Melan A), ein Naevus oder gar Melanom lagen erfreulicherweise nicht vor. Es fand sich jedoch ein chronisch entzündliches Gewebe mit Pigment-Inkontinenz und eine Makrophagen Antwort, welche zur dunklen Farbe geführt haben. Kein Muttermal, keine Bösartigkeit. Im OCT ist eine hyperreflektive Läsion zu sehen. OCT zeigt indessen nur einen optischen Brechungsindex des Gewebes: weder sind zelluläre Strukturen sichtbar noch ist eine gewebespezifische Diagnose nur mit einem Standard Spektralen OCT möglich. Karunkeltumor getoct academy HD Def | 12/3/10 | Free | View In iTunes |
| 16 | VideoDOP Deutsche ophthalmopathologische Gesellschaft 2010 | A dark pigmented tumor of the caruncle, had grown in recent months, showed clinically the suspicion of a naevus or a melanoma. Because of the unclear situation and the growth trend, diagnosis was sought and excision was recommended. Histology found, however, only a chronic inflammatory tissue with pigment incontinence and a macrophage response that led to the dark color. No nevus, no malignancy. In OCT a hyperreflective lesion is seen. OCT shows only a refractive index of the tissue, no cellular structures are visible nor a specific diagnosis is possible only with standard spectral OCT. | 11/27/10 | Free | View In iTunes |
| 17 | VideoDOP Basel 2010 | DOP 2010 HD | 11/24/10 | Free | View In iTunes |
| 18 | VideoWinner getoct photo award 2010 | Winner getoct award 2010 | 11/14/10 | Free | View In iTunes |
| 19 | VideoDry eye test BUT | Dry eye test - BUTime | 11/9/10 | Free | View In iTunes |
| 20 | VideoIMAGE ANALYSIS part 4 – Zurmuehle getoct | IMAGE ANALYSIS part 4 - Zurmuehle getoct | 10/30/10 | Free | View In iTunes |
| 21 | VideoIMAGE ANALYSIS part 3 – Zurmuehle getoct | IMAGE ANALYSIS part 3 – Zurmuehle getoct | 10/29/10 | Free | View In iTunes |
| 22 | VideoIMAGE ANALYSIS part 2 – Zurmuehle getoct | IMAGE ANALYSIS part 2 - Zurmuehle getoct | 10/29/10 | Free | View In iTunes |
| 23 | VideoIMAGE ANALYSIS part 1 – Zurmuehle getoct | IMAGE ANALYSIS part 1 - Zurmuehle getoct | 10/29/10 | Free | View In iTunes |
| 24 | VideoFirst OCT Podcast in iTunes | First OCT Podcast in iTunes | 10/22/10 | Free | View In iTunes |
| 25 | VideoHow to kill a mosquito in 10 seconds | How to kill a mosquito in 10 seconds | 10/18/10 | Free | View In iTunes |
| 26 | VideoAnnounce your events for free | Announce your events for free | 10/18/10 | Free | View In iTunes |
| 27 | VideoCheck your profile as a gocter | Check your profile as a gocter | 10/18/10 | Free | View In iTunes |
| 28 | VideoCommunity – meet and learn at any time | Community – meet and learn at any time | 10/18/10 | Free | View In iTunes |
| 29 | VideoOCT help me – brain teaser | OCT help me - brain teaser | 10/18/10 | Free | View In iTunes |
| 30 | VideoUpload your OCT images and share | Upload your OCT images and share | 10/18/10 | Free | View In iTunes |
| 31 | VideoEnjoy the OCT database-join friends | Enjoy the OCT database-join friends | 10/18/10 | Free | View In iTunes |
| 32 | VideoSecurity and invoice – well spent | Security and invoice - well spent | 10/18/10 | Free | View In iTunes |
| 33 | VideoHow to register in two minutes | How to register in two minutes | 10/18/10 | Free | View In iTunes |
| 34 | VideoHow to navigate at getoct.com | How to navigate at getoct.com | 10/17/10 | Free | View In iTunes |
| 35 | VideoPodcast: what is getoct.com? | 1 What is getoct Intro | 10/4/10 | Free | View In iTunes |
| Total: 35 Episodes |
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