Technology of SS-OCT Biometer: Argos Biometer

Swept-source OCT captures an image of the whole eye from the cornea to the retina prior to cataract surgery. The measured image is used to calculate the biometric parameters necessary for IOL power calculation. Swept-source OCT technology allows two-dimensional imaging, a superior signal-to-noise ratio, and improves tissue penetration and image quality. The Argos biometer calculates axial length as the sum of physical distances of four segments: central corneal thickness, aqueous depth, lens thickness, and the thickness of vitreous humor, each calculated by dividing optical distance by corresponding refractive indices (1.375, 1.336, 1.41, 1.336) at infra-red wavelength range which implies the true physical scale of AL. The performance of the Argos biometer includes an enhanced retinal visualization, segmented axial length measurement, and enhanced OCT keratometry.