Noncontact all-optical measurement of corneal elasticity

• DOI: 10.1364/ol.37.001625
• Publication Date: 2012-05-09T18:40:05Z
• Authors: Chunhui Li; G. Guan; Z. Huang; M. Johnstone; R. K. Wang
• Keywords: Elasticity

We report on a noninvasive and noncontact all-optical method to measure the elasticity of cornea. use pulsed laser excite surface acoustic waves (SAW) that propagate corneal surface, then phase-sensitive optical coherence tomography system remotely record SAWs from which is estimated. In addition, able provide real-time tomographic images cornea being examined, an important consideration for clinical studies. While precisely maintaining range intraocular pressures (IOP), series measurements performed ex vivo intact primate eyes. The measurement results not only demonstrate feasibility proposed elasticity, but also suggest strong correlation between stiffness true IOP.