About ICL Calc

ICL Calc is a device-adjusted sizing calculator that estimates an adjusted white-to-white (WTW) and applies a true anterior chamber depth (ACD) correction where appropriate. It then produces ICL sizing guidance and a theoretical vault prediction model intended as an adjunct to surgeon judgment.

If you choose to contribute de-identified data, a calculation number is generated for printing. You can later return to the Post-op vault entry page to submit measured vault outcomes for model validation and refinement.

Quick notes
Outputs are not a substitute for clinical judgment. Use in conjunction with a comprehensive exam and appropriate diagnostics.
WTW adjustment True ACD ICL sizing Vault model Post-op validation
1 Reference article
Biometry variability study used to derive device adjustment factors.
Citation
Micheletti JM, Hall B. Assessment of measurement variability across automated biometry devices. J Cataract Refract Surg. 2025;51(2):156-160. doi:10.1097/j.jcrs.0000000000001583.
2 How to use the tool
A quick mental model for what the calculator is doing.
Sizing workflow
  1. Select the measurement device.
  2. Enter WTW and ACD (and CCT if requested).
  3. Review adjusted WTW / adjusted ACD and the resulting size recommendation.
  4. Optionally save the calculation to generate a calculation number for later post-op entry.
Data contribution

If you opt in to saving a calculation, the system stores numeric measurement inputs and outputs plus the submitter email for occasional data verification. No free-text clinical notes fields are collected.

Post-op vault entry is designed for de-identified model validation and refinement. Please do not enter patient identifiers.

About the author

J. Morgan Micheletti headshot

J. Morgan Micheletti, MD, FACS, is a board-certified ophthalmologist, partner, director of research, and fellowship director at Berkeley Eye Center. He has performed over 10,000 surgeries, specializing in cataract, vision-correction, microinvasive glaucoma, and complex anterior segment surgery. Dr. Micheletti serves as a medical advisor to over 20 companies, is the director of clinical strategy for Synopic, and is on the board of directors for the Society of Excellence in Eyecare (SEE). He is also a fellow of the World College of Refractive Surgery and Visual Sciences.

Dr. Micheletti has received numerous accolades, with the Outstanding Young Texas Ex Award being one of his most prestigious honors. Awarded in September 2024, this recognition is presented by the The University of Texas and The Texas Exes to alumni under 40 who have demonstrated significant professional achievements and contributions to their field.

In addition to the OYTEX Award, Dr. Micheletti was named to the 40-under-40 list of ophthalmologists in the United States and received the Intraocular Implant and Refractive Society of India (IIRSI) gold medal in July 2024, which he accepted in Chennai, India, from the Chief Justice of India. He has also been recognized as one of the Best Cataract Surgeons in America, honored as a Castle Connolly Top Doctor, and received the award for Incredible Innovation and Scientific Contribution from RW Ophthalmology.

A serial inventor with six patent-pending surgical devices, including a sustainable surgical blade, electronic lens implant, and glaucoma implant, Dr. Micheletti pioneered two surgical techniques and created an AI-driven nomogram for ICL sizing. Recognized as an expert in advanced technology IOLs, he has contributed hundreds of publications and lectures, served as an investigator in over 15 clinical trials, and continues to push the boundaries of ophthalmic research. As part of his cutting-edge research, he is launching surgical devices to the International Space Station (ISS) in late 2024 aboard a Falcon 9 rocket. You can explore a few of his peer-reviewed publications on PubMed.

Dr. Micheletti is the host of The History of Eyecare podcast series, where he explores the fascinating history and advancements in eye care by interviewing surgeons and innovators in the field. He is also on the editorial boards for Ophthalmology 360 and Cataract & Refractive Surgery Today, ensuring he stays at the forefront of emerging trends and technologies in the field.

He attended The University of Texas at Austin, where he graduated with a Bachelor of Science in Cellular and Molecular Biology with High Honors and Special Honors in Biology. He earned multiple endowed presidential scholarships, was a University of Texas Distinguished College Scholar, and was selected as an inaugural member of the Freshman Research Initiative, which led to multiple scientific publications in the field of RNA aptamers and DNA pools.

Dr. Micheletti received his medical degree from Baylor College of Medicine in Houston, where he served as the president of the BCM Ophthalmology Interest Group and as an elected class officer and representative on the Medical Student Council. He then completed a transitional internship at Emory University School of Medicine before starting his residency training in ophthalmology at the prestigious Emory Eye Center. While at Emory, he published multiple peer-reviewed articles and served as an Advocacy Ambassador with the American Academy of Ophthalmology, working with local, state, and national leaders in Washington to improve eye care nationwide.

At Berkeley Eye Center, Dr. Micheletti’s clinical interests include advanced cataract surgery, surgical correction of presbyopia, cutting-edge refractive surgery, minimally invasive glaucoma surgery, complex IOL management, and complex anterior segment surgery. As the Director of Research and Fellowship Director, he is an investigator on numerous industry-sponsored clinical trials (FDA studies) and Investigator-Initiated Trials and Studies, constantly pushing the envelope in ophthalmic innovation.

Dr. Micheletti is a diplomate of the American Board of Ophthalmology, a fellow of the American Academy of Ophthalmology (AAO), and a fellow of the American College of Surgeons. He chairs the AECOS Research Committee, serves on the AAO ONE Network Cataract Committee and the Young Eye Surgeons committee for the American Society of Cataract and Refractive Surgery, and is a member of the Health Policy Committee for the Society for Excellence in Eyecare. He is an active member of the American-European Congress of Ophthalmic Surgery (AECOS), the Texas Ophthalmological Association, and the Houston Ophthalmological Society.

Outside of work, he enjoys spending time with his wife and three children, woodworking, snowboarding, and golf.