Stress estimation during ophthalmic treatments

Abstract

An ophthalmic surgical system includes an ophthalmic microscope including a first camera and a second camera. A controller coupled to the first camera and the second camera receives a current pair of images including a current representations of a retina of a patient; obtains a current three-dimensional representation of the retina from the current pair of images; determines deformation of the retina by evaluating the current three-dimensional representation relative to a reference representation of the retina; determines stress on the retina according to the deformation; and outputs guidance according to the stress. Stress may be determined using FEM and may use velocity and acceleration of the deformation. Guidance may include a graphical representation of the stress or a vector along which force should be exerted. Deformation may be detected using a mesh projected onto the retina.

Dependencies are inferred from the claim text.