Precise recording of eye movement: the IRIS technique Part 1
- 251 Downloads
The paper describes a newly developed method, called IRIS, for the precise measurement of horizontal and vertical eye movements. The method is based on the principle of reflection of infra-red light by the iris/sclera boundary. IRIS combines, when the frequency bandwidth is from DC to 100 Hz, a dynamic measuring range of 30° with a low noise level of 1 min of arc. The installation and application procedure of IRIS, without the need for rigid head fixation, is not complicated and does not require skilled personnel. IRIS allows for simultaneous recordings of the conjugate and disjunctive movements of both eyes, with a linear range up to 25° horizontal and 20° vertical.
KeywordsEye movements Infra-red light Light reflex Pupil Recording Reflection
Unable to display preview. Download preview PDF.
- Reulen, J. P. H. andBakker, L. (1982) The recording of eye movements with double magnetic induction.IEEE Trans.,BME-29, 740–744.Google Scholar
- Reulen, J. P. H., van Heuningen, R., Tiesinga, G. andBos, J. E. (1986) Computerised eye-movement processor for clinical applications: basic considerations and design.Med. & Biol. Eng. & Comput.,24, 209–215.Google Scholar
- Reulen, J. P. H., Marcus, J. T., van Gilst, M. J., Koops, D., Bos, J. E., Tiesinga, G., de Vries, F. R. andBoshuizen, K. (1988) Stimulation and recording of dynamic pupillary reflex: the IRIS technique Part 2.,26, 27–32.Google Scholar
- Robinson, D. A. (1963) A method of measuring eye movements using a search coil in a magnetic field.IEEE Trans.,BME-10, 137–145.Google Scholar
- Yee, R. D., Schiller, V. L., Lim, V., Baloh, F. G., Baloh, R. W. andHonrubia, V. (1985) Velocities of vertical saccades with different eye-movement recording methods.Invest. Ophthalmol.,26, 938–944.Google Scholar
- Young, L. R. andSheena, D. (1975) Survey of eye-movement recording methods.Behav. Res. Meth. & Instrum.,7, 397–429.Google Scholar