Comparison of three optical biometers: IOLMaster 500, Lenstar LS 900 and Aladdin.

Area of Science:

• Ophthalmology
• Medical Devices
• Biometry

Background:

• Accurate biometry is crucial for intraocular lens (IOL) power calculation in cataract surgery.
• Various optical biometry devices are available, each with unique measurement technologies.
• Comparing the performance of these devices is essential for clinical decision-making.

Purpose of the Study:

• To evaluate and compare the results of optical biometry using the IOLMaster 500, Lenstar LS 900, and Aladdin devices.
• To assess the agreement between these three biometers for key ocular parameters in cataractous eyes.

Main Methods:

• Retrospective comparison of measurements from three biometers (IOLMaster 500, Lenstar LS 900, Aladdin) in 231 eyes of 152 cataract patients.
• Paired comparisons were performed for axial length (AL), mean keratometry (mean K), and anterior chamber depth (ACD).

Main Results:

• Reliable AL measurements were obtained in 85.3% of eyes across all three devices.
• Statistically significant differences in AL were observed between IOLMaster 500 and the other two, but these were clinically insignificant (0.04 mm).
• Differences in mean K and ACD among the devices were neither statistically nor clinically significant.

Conclusions:

• No clinically significant differences were found between the IOLMaster 500, Lenstar LS 900, and Aladdin biometers for AL, mean K, and ACD.
• These optical biometry devices demonstrate comparable performance in cataractous eyes.
• The findings suggest that these devices can be used interchangeably for biometric measurements in routine cataract surgery planning.