Surgical Webinar Series

May / June 2020

Managing Post-Refractive Patients: A Clinical Case Discussion

Dr. Yeo Tun Kuan & Dr. Sheetal Brar

More and more refractive patients, who underwent a laser vision correction several years ago, now turn into cataract patients. These patients are most likely very demanding as they are more sensitive to their post-operative outcome with a high wish for spectacle independence. In addition, these cases can be a challenge when it comes to IOL power calculation, as for example the shape of the cornea and/or spherical aberrations have changed.


  • Case presentation and discussion, including the pre-operative assessment
  • Proper IOL power calculation
  • Recommendations for IOL technology selection
  • Q&A

Speaker details

Dr. Yeo Tun Kuan
Dr. Yeo Tun Kuan

Consultant at the Anterior Segment Department of Ophthamology, Tan Tock Seng Hospital, Singapore

Dr. Yeo Tun Kuan is a Consultant at the Anterior Segment Department of Ophthamology at Tan Tock Seng Hospital, Singapore and a Clinical Lecturer at Yong Loo Lin School of Medicine, National University of Singapore.

  • He completed his MMed (Ophthalmology) qualification at the National University of Singapore and his fellowship at Sir Charles Gairdner Hospital & Lions Eye Institute Perth, Western Australia under Prof. Graham Barrett.
  • Dr. Yeo is active in research. He has published in various peer-reviewed journals and has been involved in several research grants. His current research interests are in complex cataract surgery, lens design, biometry, and intraocular lens formulae.
  • His areas of ophthalmic practice include anterior segment, cataract and general ophthalmology with particular interest in complex anterior segment and cataract surgery.
Dr. Sheetal Brar
Dr. Sheetal Brar

Senior Consultant at Nethradhama Eye Hospital, Bangalore, India

Dr. Sheetal Brar is a senior consultant in the phacoemulsification and refractive surgery departement, and a research coordinator at Nethradhama Eye Hospital, Bangalore, India.

  • She received her MS from Christian Medical College & Hospital, Ludhiana, Punjab in 2008, a fellowship in Cornea & External Diseases from Aravind Eye Hospital, Madurai in 2013, and another fellowship in Phacoemusification & Refractive Surgery at Nethradhama Eye Hospital in 2014.
  • She received many awards. Among them are, the first prize in the cornea/refractive video category at the 2018 APACRS, the Best Paper of the Session Award at the 2018 ASCRS, and the prestigious Young Director/New Physician Award at the 2015 ASCSRS. She was also honored with the Shiv Prasad Hardia award for best refractive paper by the All India Ophthalmological Society in 2016.

Pearls and Pitfalls with Multifocal IOLs

Dr. Ronald Yeoh & Dr. Amir Hamid

Patients with cataracts continue to have higher visual demands. Multifocal IOLs do promise a high degree of spectacle independence to these patients. Achieving excellent outcomes with multifocal IOLs can be more difficult for a variety of reasons, especially when it comes to multifocal toric IOLs. This webinar will provide a comprehensive primer for improving outcomes by reviewing pre-, intra-, and postoperative pearls based on clinical cases presented and discussed by an experienced panel.


  • Pre- and post-operative assessment with Multifocal toric IOLs
  • Clinical Case discussions
  • Live Q&A with expert panel

Speaker details

Dr. Ronald Yeoh

Eye & Retina Surgeons, Camden Medical Centre, Singapore

Dr. Ronald Yeoh is the Medical Director and Founding Partner of Eye & Retina Surgeons, Singapore. He is also on the faculty of Singapore National Eye Centre, where he is a member of the Cataract Subspecialty Group, and an adjunct assistant professor at Duke-NUS Graduate Medical School.

  • Dr. Yeoh’s interests are in state-of-the-art cataract surgery with the ultimate aim of quality vision at all distances without glasses, and the development of surgical techniques and instruments for femtosecond laser-assisted cataract surgery.
  • As one of the pioneers in phacoemulsification in Singapore, he ran a highly rated basic phaco course, “Pearls & Pitfalls in beginning Phacoemulsification”, at the American Society of Cataract and Refractive Surgery (ASCRS) annual meeting from 2000 to 2012. He has also lectured extensively on advanced technology lens implants and run successful femtophaco courses around the world. In 2012, he was elected to the International Intraocular Implant Club (IIIC).
Dr. Amir Hamid

Optegra Eye Hospital, London, United Kingdom

Dr. Amir Hamid is the Clinical Lead for Cataract and Refractive Surgery at Optegra Eye Hospital, United Kingdom.

  • Dr. Hamid has been performing laser vision correction and intraocular refractive surgery for over 10 years.
  • He is a key opinion leader in vision correction surgery and is frequently invited to speak at national and international meetings and is also a consultant and a clinical investigator for several leading ophthalmology organizations.

Anterior segment applications
– Experiences with ZEISS ARTEVO 800

Dr. Erik Mertens & Dr. Sri Ganesh

Today, digital visualization has become more and more common place. As a surgeon you are not only interested in new technologies, but also in the advantages new technology can offer you and the surgical workflow in your practice.


  • Experiences from your peers
  • Product demonstration
  • Case presentation
  • Q&A

Speaker details

Dr. Erik Mertens

Medipolis Antwerp Private Clinic, Antwerpt, Belgium

Erik L. Mertens, MD, FEBOphth currently serves as the Director and Ophthalmic Surgeon of the Medipolis Eye Center in Belgium.

  • Dr. Mertens graduated from the University of Antwerp in 1991. He then followed his residency in ophthalmology from 1991-1995 studying refractive surgery, wavefront aberration laser surgery, phakic IOL, cataract surgery, cornea transplant and presbyopia reversal. He founded a new multidisciplinary clinic named 'Medipolis Private Antwerp Clinic’ in 2009 (Antwerp, Belgium). Medipolis is the only ophthalmogic center in Belgium that has obtained the rigorous KIWA certificate. He graduated from the Kellogg School of Management, Evanston, USA as Physician CEO in October 2015.
  • Dr. Mertens has utilized his expertise to become a specialist in the field of refractive surgery as well as small incision cataract surgery. His extensive refractive surgery experience has led him to be the first author in 32 international publications; the author of over 400 abstracts in national and international congresses; and make over 600 scientific presentations, both nationally and internationally.
Dr. Sri Ganesh

Nethradhama Super Specialty Eye Hospital, Bangalore, India

Sri Ganesh, MD is currently Chairman & Managing Director of Nethradhama Super Speciality Eye Hospital, Bangalore. He is managing Trustee Shraddha Eye Care Trust (R), Padmanabha Nagar Bangalore.

  • Dr. Ganesh received his basic medical education in Bangalore, Karnataka, and completed his postgraduate training in ophthalmology at Regional Institute of Ophthalmology, Minto Ophthalmic Hospital, Bangalore Medical College, Bangalore. He completed DNB in 1999. He was an observer fellow in Phacoemulsification and Lasik at Sheppard Eye Centre, LV, Nevada, USA.
  • Dr. Ganesh was honored with the “International Hero in Ophthalmology” award and he awarded the prestigious Honorary FAICO degree for Refractive Surgery by AIOS at the annual All India Ophthalmic Conference 2019.
  • He is a member of Indian Medical Council (IMC), Karnataka Ophthalmic Society, All India Ophthalmological Society, Bombay Ophthalmologists' Association (BOA), American Academy of Ophthalmology (AAO), Bangalore Ophthalmic Society, American Society of Cataract and Refractive Surgery (ASCRS), Board of Specialty Societies (BOS), European Society of Cataract and Refractive Surgeons (ESCRS) and Karnataka Medical Council.

Posterior segment applications
– Experiences with ZEISS ARTEVO 800

Dr. Ehab El Rayes & Dr. James H. Whelan

Today, digital visualization has become more and more common place. As a surgeon you are not only interested in new technologies, but also in the advantages new technology can offer you and the surgical workflow in your practice.


  • Experiences from your peers
  • Product demonstration
  • Case presentation
  • Q&A

Speaker details

Dr. Ehab El Rayes

Institute of Ophthalmology, Cairo, Egypt

Ehab El Rayes, MD is Professor and chairman of department of Ophthalmology at the Institute of Ophthalmology in Cairo.

  • Dr El Rayes received his medical degree with honor from Ein Shams University. He completed his Ophthalmology training and residency in Cairo University hospital. Dr El Rayes had his master degree in Ophthalmology from Cairo University after which he joined the Associated Retinal Consultants with its great faculty in Royal Oak Michigan for his vitreoretinal fellowship in 1993. He also had a year of research fellowship at the Research Eye Institute, Oakland University, Rochester, MI, USA in 1994. He received his Ph.D. degree in 1995.
  • Dr El Rayes is on the faculty of the Institute of Ophthalmology in Cairo, joining and participating as primary investigator in clinical trials nationally and internationally, with special interest in diabetic retinopathy, retinal detachment and pediatric retinal surgery. He serves as a vitreoretinal surgeon in the Retina service In the eye institute hospital, International Eye Hospital . He is an innovator of the 23 g fragmatome as well as the innovator of the suprachoroidal surgical techniques and product line. 
Dr. James H. Whelan

Memorial University, St. John's, Canada

James H. Whelan, MD was born in St. John’s, Newfoundland and completed his Undergraduate Degree in Physics and his Medical Degree at Memorial University. He completed a 4 year Residency in Ophthalmology at Dalhousie University in Halifax, Nova Scotia. He then completed a 2 year fellowship in Medical and Surgical training in disease of the Retina, Vitreous and Intraocular Tumors at Wills Eye Hospital in Philadelphia Pennsylvania.

  • Dr. James Whelan is currently an Assistant Professor, and Chief of Ophthalmology for the Department of Surgery at Memorial University of Newfoundland. He is a staff Retina Surgeon for the Eastern Health Corporation at the Health Science Center and Janeway Child Health Center in St. John’s. He is Past President of the Canadian Retina Society, and former Board Member of the Canadian Ophthalmological Society. Dr. Whelan is a Diplomat of the American Board of Ophthalmologists and member of the American Society of Retina Surgeons. Moreover, he is a standing member of the CANPAT committee for the Canadian Retina Society.
  • His main areas of research are Inherited Retinal Disorders, Surgical Treatment of Advanced Diabetic Retinopathy and anti-VEGF Agents in the Treatment of Retinovascular Disease.

Latest clinical data and research on trifocal IOL technology

Dr. Aanchal Gupta & Dr. Ben LaHood

Multifocal IOLs are specifically designed to allow unaided good vision across a range of distances, which is the ultimate outcome that every patient wishes for. However, with many options available in the market now, which one is the most suitable for our patients?

Dr. Aanchal Gupta and Dr. Ben LaHood will provide an in-depth analysis of the optical characteristics and clinical performance of the AT LISA tri in comparison to the AcrySof IQ PanOptix, and discuss the role of Angle Kappa in Multifocal IOL implantation.


  • Experiences from your peers
  • Latest scientific research data
  • Case presentation
  • Q&A

Speaker details

Dr. Aanchal Gupta

Adelaide Eye & Laser Centre, Adelaide, Australia

Dr. Aanchal Gupta MBBS, M.Med. (Ophth. Sci.), Grad. Dip. (Refract. Surg.), FRANZCO is a cataract, corneal and refractive surgeon. She is fellowship trained in corneal and refractive surgery at the University of British Columbia in Vancouver.

  • She has particular expertise in refractive cataract surgery and multifocal IOLs; topography-guided laser vision correction for refractive as well as rehabilitative corneal treatment; and lamellar corneal transplantation. 
  • Dr. Gupta has authored numerous peer-reviewed international research publications and is involved in ongoing research in IOL technology and novel corneal treatments for Fuchs dystrophy and Keratoconus. She is a clinical lecturer at the University of Adelaide.
Dr. Ben LaHood

Eye Institute, Auckland, New Zealand

Dr. Ben LaHood specialises in refractive and anterior segment surgery with a focus on premium lenses, presbyopia solutions and astigmatism management. He completed his training in ophthalmology in New Zealand before undertaking his fellowship in refractive surgery in Adelaide, Australia. 

  • He has published several research papers in peer reviewed journals about astigmatism assessment and management. His main interest and higher degree focus on the measurement of posterior corneal astigmatism and its incorporation into lens calculations. This work has been widely cited and presented internationally.
  • Dr. LaHood is passionate about teaching. He runs international courses about toric and trifocal IOLs as well as teaching trainees about cataract surgery and hosting a podcast. His aim is to help surgeons to feel comfortable with these new technologies to improve outcomes for patients.

IOL Power Calculation: Standard Cases to Post Laser Vision Correction

Dr. Graham Barrett & Dr. Ashvin Agarwal

Biometry plays an important role in getting the target refraction. The new generation of formula helps to get closer to our target refraction. Which formula would you choose and why? From the untouched eyes to post laser vision correction eyes, which formula would you choose? Learn more about latest news in IOL Power Calculation formulae including the introduction to the new Barrett True K TK formula with ZEISS IOLMaster 700.


  • Extensive Live Q&A and panel discussion

In preparation for the webinar, please watch the presentation of Dr. Barrett about 'Optimizing Refractive Outcomes Using Improved TK Formula for Cataract Surgery'.

Watch video
in advance
to be prepared for live Q&A


Speaker details

Graham Barrett, MD

Lions Eye Institute, Perth, Australia

Dr. Graham Barrett trained in ophthalmology in Perth, Western Australia, and undertook specialty training in the USA. He is a consultant ophthalmic surgeon and previously the Head of Department at Sir Charles Gardiner Hospital.

  • He is founding and current president of the Australasian Society of Cataract & Refractive Surgeons and past president of the Asia Pacific Association of Cataract and Refractive Surgeons.
  • He is the recipient of major international awards including the Ridley Medal (European Society of Cataract & Refractive Surgeons), the Binkhorst Medal (American Society of Cataract & Refractive Surgeons) and the Ridley Medal (Congress of German Ophthalmic Surgeons).
Ashvin Agarwal, MD

Dr. Agarwals Eye Hospital, Chennai, India

Dr. Ashvin Agarwal is a cataract cornea refractive and anterior segment reconstruction surgeon.

  • He is the Executive Director, Chief of Clinical Services & Chairman of the Clinical Board at Dr Agarwal's Group of Eye Hospitals and holds the post of ISRS webinar task force chair, ISRS cataract refractive committee, AAO ONE network refractive committee member

Additional preliminary test for Cataract Refractive Surgery- Incremental accuracy in patient outcome

Dr. Michael Lawless & Dr. Han Bor Fam

In cataract surgery the preoperative evaluation of the cataract patient is very important. Abnormalities in the ocular surface can affect the visual performance and the accuracy of biometric measurements used for IOL power calculation. What are the key factors which may influence your outcomes and what are other assessment you may consider in your daily routine without changing your workflow?


  • Dry Eye Management and its impact on biometric measurement 
  • Influence of topography on your outcomes in cataract surgery
  • Case presentations
  • Q&A

Date and Time

coming soon on-demand

Speaker details

Michael Lawless, MD

Vision Eye Institute, Sydney, Australia

Dr. Michael Lawless specializes in cataract and refractive surgery and corneal transplantation.

  • He has performed over 35,00 surgical procedures, has always been active in clinical research and has published over 110 articles in the peer reviewed literature.
  • He serves as Clinical Associate Professor at the University of Sydney Medical School.
Han Bor Fam, MD

Tan Tok Seng Hospital, Singpaore

Dr. Fam Han Bor is the Senior Consultant and Head of Cataract, Implant and Anterior Segment Service at NHG Eye Institute@ Tan Tock Seng Hospital. He is also a Senior Consultant in the Refractive Surgery Service in the same institution. He was the adjunct scientist at Singapore Eye Research Institute (SERI).

  • His main research interests lie in visual optics, wavefront science, IOL power calculations, and corneal modeling. He also has a keen interest in the design and refinement of new phacoemulsification technologies. His research has been published in leading peer-reviewed ophthalmology journals.


#ZEISSWebinar #ZEISS #Cataract #Refractive #MeetUs