Abstract: Computer readable code adapted and configured to enable collection, annotation and sharing of digital ophthalmic images collected using a camera module on a mobile device or a hand held computer. The hand held computer can be used with a lens adapter configured to engage with a hand held computer device to allow a camera on the hand held computer device to take a high quality image of an eye.

Abstract: A method (100) of authenticating a subject (21) using a plurality of biometric traits, comprising: determining (110) a first data set representative of a first biometric trait that is based on at least one of iris pattern or iris colour of the subject; determining (120) a second data set representative of a second biometric trait that is based on a corneal surface of the subject; comparing (130) the first data set representative of the first biometric trait with a first reference and the second data set representative of the second biometric trait with a second reference; and authenticating (140) an identity of the subject based on the comparison.

Abstract: A cornea center positioning method for excimer laser keratomileusis includes the following steps of establishing a horizontal offset model and a vertical offset model by way of measuring the pupil diameter and offset of the pupil center relative to the center of the corneal vertex under different luminance levels, and inputting data of the established models into a laser keratomileusis machine with an eye tracking system, which can dynamically track the pupil location and keep the ablation center precisely at the center of the corneal vertex.