A new method for eye location tracking

Eugene Paperno, Dmitry Semyonov

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A standard scleral search coil (SSC) system is supplied with a single three-axial transmitter (or with a triad of transmitters) and the direct magnetic coupling between the transmitting coils and the SSC is used for computing the eye location. The SSC's orientation components measured by the SSC system are involved in the location-tracking algorithm as well. The suggested method differs from traditional ones where the eye location is computed indirectly, relative to the measured location and orientation of a transitional three-axial magnetic sensor attached to the subject's head. The new method eliminates systematic errors caused by inaccurate situating the transitional sensor relative to the eye. It also eliminates systematic errors caused by imperfect orthogonality of the transitional sensor. It is found that an accurate location tracking with a single transmitter is possible only if orientation freedom of the eye is limited. To track the eye location with no orientation limitations, a triad of transmitters is employed. The resulting accuracy can be as good as ±1 mm (in a 200-Hz bandwidth) over a relatively large (0.5 × 0.5 × 0.5 m) operating region in the center of a 1 × 1 × 1 m SSC system. The analytical results obtained are confirmed with the help of computer simulations.

Original languageEnglish
Pages (from-to)1174-1179
Number of pages6
JournalIEEE Transactions on Biomedical Engineering
Issue number10
StatePublished - 1 Oct 2003


  • Direct magnetic coupling
  • Eye location tracking
  • Scleral search coil
  • Triad of there-axial transmitters

ASJC Scopus subject areas

  • Biomedical Engineering


Dive into the research topics of 'A new method for eye location tracking'. Together they form a unique fingerprint.

Cite this