Anterior segment biometry: a study and review of resolution and repeatability data

Area of Science:

• Ophthalmic imaging
• Biometry
• Optical coherence tomography

Background:

• Anterior segment imaging devices are crucial for surgical planning.
• Accurate and repeatable measurements are essential for successful ophthalmic surgery.
• Existing data on device resolution and repeatability is often fragmented or unavailable.

Purpose of the Study:

• To gather and compare resolution and repeatability data for various anterior segment imaging devices.
• To establish a comprehensive dataset for devices used in surgical planning.
• To identify gaps in manufacturer-provided data.

Main Methods:

• Manufacturers were contacted via a letter requesting specific resolution and repeatability data.
• A standardized protocol and definitions were provided for data submission.
• A literature review was conducted to supplement manufacturer data.
• Raw data was requested if not published in peer-reviewed literature.

Main Results:

• Nine out of 13 manufacturers provided data.
• Only one manufacturer provided data without a prospective study.
• Five manufacturers supplied complete repeatability data; four admitted unknown repeatability for some parameters.
• Specific devices included Pentacam HD, Galilei, Visante OCT, SL-OCT, RTVue, Artemis, Vumax, HiScan, and Eye Cubed.

Conclusions:

• Manufacturer and literature data were insufficient, necessitating this study.
• This report offers the most comprehensive review of biometric device resolution and repeatability to date.
• The findings highlight the need for standardized and complete data reporting by manufacturers.