Contact-based stiffness sensing of human eye.

Goldmann applanation tonometry is commonly used for measuring intraocular pressure (IOP) to diagnose glaucoma. However, the measured IOP by conventional applanation tonometry is valid only under the assumption that all subjects have the same structural eye stiffness. This paper challenges in vivo measurement of eye stiffness with a noninvasive approach and investigates individual differences of eye stiffness.

Understanding eye deformation in non-contact tonometry.

Non-contact tonometers are widely used to measure the internal eye pressure, i.e. the IntraOcular Pressure (IOP), which is an important parameter for the diagnosis and treatment of glaucoma.

Eye stiffness measurement by probe contact method.

The internal eye pressure is an important index for judging whether an eye suffers from glaucoma or not. The conventional eye pressure measurement is valid only under the condition that all subjects have the same structural eye stiffness. This paper challenges the practice of measuring the stiffness of a human eye by pressing the cornea with a contact probe.

Dynamic properties of human eyes.

This paper presents novel details on the dynamic behavior of human eyes (see Fig.1). A high speed camera is used to capture the movement of the eye surface, which is excited by an air jet.