Observation of Sound-induced Corneal Vibrational Modes by Optical Coherence Tomography

Overview

Journal Biomed Opt Express

Specialty Radiology

Date 2015 Sep 30

PMID 26417503

Citations 28

Authors

B Imran Akca

Ernest W Chang

Sabine Kling

Antoine Ramier

Giuliano Scarcelli

Susana Marcos

Seok H Yun

Affiliations

Soon will be listed here.

Abstract

The mechanical stability of the cornea is critical for maintaining its normal shape and refractive function. Here, we report an observation of the mechanical resonance modes of the cornea excited by sound waves and detected by using phase-sensitive optical coherence tomography. The cornea in bovine eye globes exhibited three resonance modes in a frequency range of 50-400 Hz. The vibration amplitude of the fundamental mode at 80-120 Hz was ~8 µm at a sound pressure level of 100 dB (2 Pa). Vibrography allows the visualization of the radially symmetric profiles of the resonance modes. A dynamic finite-element analysis supports our observation.

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