Total corneal map best for trifocal IOL power calculation using standard formulas

Total corneal map best for trifocal IOL power calculation using standard formulas
Roibeard O’hEineachain
Roibeard O’hEineachain
Published: Saturday, February 22, 2020
IOL power calculations for trifocal IOLs when using standard formulas appear to be more predictable when using 4mm zone total corneal power maps obtained using the Pentacam than when using keratometric data from the IOLMaster, according to a study presented by Sergey Shukhaev MD, S. Fyodorov Eye Microsurgery Federal State Institution, St Petersburg, Russia. The study involved 45 eyes of 30 patients who underwent phacoemulsification with femtolaser and implantation of a trifocal AcrySof IQ PanOptix IOL, Dr Shukaev told the 24th ESCRS Winter Meeting in Marrakech. IOL power was calculated on the IOLMaster 500 (ver. 5.4 Carl Zeiss Meditec AG) using four formulas (Haigis, HofferQ, Holladay 1, SRK / T) and four different types of keratometric data, namely the IOLMaster, the total corneal power in the 4mm zone from the Pentacam Сataract Pre-Op map (map 1), keratometry in the actual zone from the Pentacam EKR Holladay (map 2) and keratometry in the actual zone from the Pentacam Power Distribution (map 3). At one to-three-months postoperative, their analysis showed that when using the Hoffer Q and Holladay formula, the deviation of the calculated refraction from the postoperative refraction was significantly lower when using the with the Pentacam total corneal power map than it was when using the IOLmaster keratometric data.
Tags: ESCRS Marrakech 2020
Latest Articles
ESCRS Today 2025: Happy Anniversaries!

ESCRS celebrates milestones with pioneers in IOLs, LASIK, femtosecond lasers, and corneal transplantation.

Read more...

ESCRS Today 2025: A Congress for Everyone

From YOs to families, the ESCRS Annual Meeting embraces full participation through inclusivity.

Read more...

ESCRS Today 2025: All Eyes on Innovation

Watching out for obstacles and opportunities

Read more...

Beyond the Numbers

Empowering patient participation fosters continuous innovation in cataract surgery.

Read more...

Thinking Beyond the Surgery Room

Practice management workshop focuses on financial operations and AI business applications.

Read more...

Aid Cuts Threaten Global Eye Care Progress

USAID closure leads retreat in development assistance.

Read more...

Supplement: ESCRS Clinical Trends Series: Presbyopia

Read more...

Debate: FS-LASIK or KLEx for Hyperopia?

FS-LASIK has more of a track record, but KLEx offers advantages.

Read more...

Four AI Applications Ready for Practice

Commercial offerings may save time, improve practice and research.

Read more...

Perioperative Medication Regimens for Cataract Surgery

Randomised controlled clinical trial results provide evidence-based guidance.

Read more...