About Us
We are the leader in next-generation femtosecond laser technology for refractive cataract surgery. Our mission is to take the time to understand the needs of surgeons and their patients so that we can innovate our technology to ensure we meet their dynamic needs. In only 2 years, we provided our surgeons with 6 software updates to guide more precise astigmatism management and improved refractive outcomes.
We are able to deliver the best medicine to their patients and better business for their practices.


Our industry-leading innovation is guided by the experience and influence of our prestigious Medical Advisory Board.

Carlos Buznego,

Carlos Buznego, M.D.

Carlos Buznego, M.D., is a Miami-based board-certified ophthalmologist specializing in a range of ophthalmic surgeries including LASIK, laser cataract, and micro-invasive glaucoma surgery. He is an active staff member at Baptist Hospital, Surgical Park Center, and Baptist Medical Arts Surgery Center, as well as a voluntary assistant professor of ophthalmology at the University of Miami’s Bascom Palmer Eye Institute and the Florida International University College of Medicine. Dr. Buznego has been recognized by the American Academy of Ophthalmology for his achievements and has been named one of the “Best Doctors in South Florida” in several polls over the last decade.

Early in his career, he was elected the youngest President in history of the Dade County Medical Association (2001-2002) and the youngest and first Hispanic President of the Florida Society of Ophthalmology. Today, Dr. Buznego is the Chairman of the board of CEDARS/ASPENS. He is also an international lecturer, writes articles about new techniques in his areas of expertise, and is an active clinical researcher and investigator for numerous FDA clinical trials.

Dr. Buznego earned his bachelor’s degree and M.D. at Washington University in St. Louis and completed his training in ophthalmology at the prestigious Bascom Palmer Eye Institute.

Warren Hill,

Warren Hill, M.D.

Warren Hill, M.D., is a board-certified ophthalmologist who has been in private practice in Arizona for the past 35 years. He is best known for his work regarding IOL power selection, and his websites are some of the most popular IOL power calculation resources in the field of ophthalmology:,,, and the ASCRS post-refractive calculator developed with Drs. Koch and Wang. 

Dr. Hill has published extensively, served as visiting professor for grand rounds at numerous institutions, and is an Adjunct Professor of Ophthalmology and Visual Sciences at Case Western Reserve University. He has widely delivered lectureships and presented at national and international meetings, as well as performed live surgery at ophthalmology meetings across the globe. From 2007 to 2010, he was the Cataract and Anterior Segment Subspecialty Editor for the American Academy of Ophthalmology's Ophthalmic News and Education (O.N.E.) Network. In 2016, Dr. Hill received the Rayner Medal in Ophthalmology of the United Kingdom & Ireland Society of Cataract and Refractive Surgeons, and then in 2017, he received the Presidential Recognition Award of the International Society of Refractive Surgery. He is also a member of the prestigious International Intra-Ocular Implant Club.

Dr. Hill completed his undergraduate degree at the University of Maryland, College Park, followed by his M.D. at the University of Arizona College of Medicine, and his ophthalmology training at the University of Rochester in New York.

Mitchell A Jackson,

Mitchell A. Jackson, M.D.

Mitchell A Jackson, M.D., is a board-certified ophthalmologist specializing in cataract and refractive surgery. He is the founder and CEO of Jacksoneye, his private practice of more than 25 years in Lake Villa, Illinois. Additionally, he is a clinical assistant at the University of Chicago Hospitals. Dr. Jackson has been widely recognized for his achievements, having been selected to the PS250 Premier Surgeon list, OSN300 Refractive Surgeon list, and ASCRS Clinical Subcommittee for Cataract and Refractive Surgery. He also received the 2018 Annual Millennial Award, the 2018 AAO Board of Trustees Achievement Award, and the 2018 Innovation and Founders Award for CEDARS/ASPENS.

Dr. Jackson is a board member of the American College of Eye Surgeons, founding member of the American College of Ophthalmic Surgeons, and founding member and past 2018 President of CEDARS/ASPENS. He also serves on the editorial boards of numerous ophthalmology publications. Dr. Jackson has been involved in many FDA pharmaceutical and surgical clinical studies over the tenure of his practice, including serving as the Global Medical Director of ACE Vision Group.

Dr. Jackson graduated from Pomona College, received his medical degree from the Chicago Medical School, and completed his ophthalmology residency at the University of Chicago Hospitals.

Mark Packer, M.D.,
F.A.C.S, C.P.I.

Mark Packer, M.D., F.A.C.S., C.P.I.

Mark Packer, M.D., F.A.C.S., C.P.I., is an internationally recognized leader in ophthalmology and board-certified ophthalmologist. He is an author of original research establishing innovative techniques and groundbreaking technologies and is widely sought for his clinical, medical, and regulatory expertise in ophthalmic drugs and devices. Dr. Packer consults for a multitude of companies and is the Chief Medical Officer for Cassini Technologies and International Biomedical Devices, Inc. He has been awarded for his contributions and leadership in the field, including a Special Recognition Award and an Achievement Award from the American Academy of Ophthalmology.

Dr. Packer has edited textbooks on cataract and refractive lens surgery, written hundreds of book chapters and medical articles, and served as editor for the annual cataract and IOL issue of Current Opinion in Ophthalmology. Elected to membership in the International Intraocular Implant Club (2005), he has delivered hundreds of presentations at scientific meetings around the globe and demonstrated live cataract surgery at conferences worldwide. Additionally, he has served as Principal Investigator or Medical Monitor in over 60 clinical trial protocols that led to FDA clearances and approvals.

Dr. Packer completed his general studies at Harvard University and earned his M.D. from the University of California, Davis, School of Medicine. He completed his residency at Boston University Affiliated Hospitals.

Gregory D. Parkhurst,
M.D., F.A.C.S

Gregory D. Parkhurst, M.D., F.A.C.S.

Greg Parkhurst, M.D., is the founder and Physician-CEO of Parkhurst NuVision, a rapidly growing ophthalmology group in San Antonio, Texas. Parkhurst NuVision is known internationally as a leading practice in refractive surgery. Listed as one of the Top 40 Under 40 most influential ophthalmologists in the world by The Ophthalmologist, Dr. Parkhurst has helped bring new vision correction procedures to market through research and innovation.

Dr. Parkhurst has been a founding member of multiple ophthalmic professional societies including the American European Congress of Ophthalmic Surgery and the Refractive Surgery Alliance, for which he also served as President for 2 years. He has served as principal investigator for numerous FDA clinical trials, which have led to FDA approvals of some of the most commonly used surgical procedures in ophthalmology today. Dr. Parkhurst has particular expertise with phakic IOLs, having been the highest volume Visian ICL implanter in the U.S. for 2 consecutive years, and has authored multiple papers and text book chapters on the subject.

Dr. Parkhurst earned his M.D. from Northwestern University. He completed his residency at Walter Reed Army Medical Center and fellowship at the University of Texas and Slade and Baker Vision Center in Houston.

William B. Trattler,

William B. Trattler, M.D.

William B. Trattler, M.D. is a board-certified ophthalmologist practicing at the Center for Excellence in Eye Care in Miami, Florida. Throughout his career, Dr. Trattler has been influential in the field of ophthalmology as a researcher, lecturer, panelist, authr, advisor, and board member. He has been recognized at length for his contributions, including the Millennial Award presented by Millennial Eye. He was also named to the Power List: Top 100 Most Influential People in the World of Ophthalmology.

Dr. Trattler has served as an investigator on numerous clinical trials for ophthalmic devices, therapeutics, and innovative cataract technologies, and he is a consultant for various ophthalmic companies. He has served in leadership roles for ophthalmic societies including the American-European Congress of Ophthalmic Surgery (AECOS), the Refractive Surgery Alliance, and the International Society of Refractive Surgery, and he has been deeply involved in the organization of leading scientific meetings. He is widely published, having authored peer-reviewed journal articles, abstracts, presentations, textbooks, textbook chapters, and non-peer reviewed articles.

Dr. Trattler completed his undergraduate degree at Dartmouth College and earned his medical degree with research distinction at the University of Miami School of Medicine. He went on to do his ophthalmology residency at the University of Pennsylvania, followed by his fellowship at the University of Texas Southwestern Medical School.

Denise Visco,

Denise Visco, M.D.

Denise Visco, M.D., is an award-winning ocular surgeon and Medical Director. She is the founder of Eyes of York (1996), as well as a freestanding laser vision correction center, also in Pennsylvania. In addition to being certified by the American Board of Ophthalmology, she is among the few elite providers certified by the American Board of Eye Surgery, having performed more than 20,000 no-stitch cataract surgeries and thousands of laser vision correction procedures. In recognition of her leadership and innovation in the field of ophthalmology, Dr. Visco has been named to the prestigious Ocular Surgery News’ Premier Surgeon 300.

Dr. Visco is a pioneer of surgical advancement, as she was the first female surgeon in the world to perform cataract surgery with the LENSAR Laser System. She is also the first in her area to offer all laser LASIK procedures and customized options for cataract surgery, and she opened York County’s first and only ambulatory surgical center specializing in eye surgery. Dr. Visco is a founding member and board member of CEDARS/ASPENS, as well as President of the American College of Eye Surgeons.

Dr. Visco graduated with honors from the University of Delaware, Jefferson Medical College, and Penn State University.

Robert J. Weinstock,

Robert J. Weinstock, M.D.

Robert J. Weinstock, M.D., is a board-certified ophthalmologist and fellowship-trained cataract and refractive surgeon who has performed over 30,000 cataract and refractive procedures. Dr. Weinstock currently serves as the Director of Cataract and Refractive Surgery at the Eye Institute of West Florida and the Weinstock Laser Eye Center. Dr. Weinstock is also an associate clinical professor at the University of South Florida’s Department of Ophthalmology. He is a world leader and innovator in cataract surgery, having helped develop numerous revolutionary technologies such as microincisional bimanual phaco, intraoperative aberrometry, 3-D surgical guidance, and femtosecond laser cataract surgery.

Additionally, Dr. Weinstock is the Chief Medical Editor for Cataract and Refractive Surgery Today and is on the board of Outpatient Ophthalmic Surgery Society and the CEDARS/ASPENS organization. He also serves on the medical advisory board of many ophthalmic companies. Dr. Weinstock is actively involved in FDA phase III and IV clinical trials, is a well-published author and frequent lecturer, and continues to teach students internationally.

Dr. Weinstock earned his B.A. from Brandeis University and his M.D. from the Chicago Medical School. He completed his residency at the Saint Louis School of Medicine and fellowship at the Eye Institute of West Florida.

Elizabeth Yeu,

Elizabeth Yeu, M.D.

Elizabeth Yeu, M.D., is a board-certified ophthalmologist specializing in cornea, cataract, LASIK, and refractive surgery. Dr. Yeu has been a partner at Virginia Eye Consultants since 2014 and is an assistant professor at the Eastern Virginia Medical School. She is also the Medical Director of the Virginia Surgery Center and serves on the board for the Virginia Eye Foundation. She has been well awarded for her contributions to ophthalmology, with recognitions that include The Ophthalmologist's global Power Lists (2017, 2019) and their Top 40 Under 40 (2015), Clinical Rising Star (2018) by the Ophthalmic Innovations Summit, Castle Connelly Top Doctor (2016-2019), and the Castle Connelly Exceptional Women in Medicine Award (2017, 2018).

Dr. Yeu provides guidance and governance across several national medical boards and committees. She has authored numerous articles and is a frequent lecturer in the areas of refractive cataract surgery, anterior segment reconstruction, ocular surface disease management, and surgical management of astigmatism. She is the editor-in-chief of U.S. Ophthalmic Review and served as the medical editor of Millennial Eye (2015-2017).

Dr. Yeu completed her medical degree at the University of Florida College of Medicine, her residency at Rush University Medical Center in Chicago, and her fellowship at Cullen Eye Institute, Baylor College of Medicine.


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