Diode array as fixation light to reduce unwanted globe movements.
In ocular surgery complications can occur from eye movements during topical anesthesia or insufficient retrobulbar anesthesia. To minimize eye movements during surgery a fixation light was designed consisting of a diode array embedded in an eye patch, and a keyboard, which will be positioned on the patient's thorax. The patient focuses with the unoperated eye at a flashing diode which is part of the diode array. The operated eye is guided by conjugated eye movements. With the keyboard, the surgeon can change the diode signal all over the array. As a result, the eye is kept still or moved in the appropriate direction to facilitate the surgical process. The flat and lightweight design of the device enables its use under sterile surgical covers or in an upright position of the patient during laser applications.
Frohn
A
A
Department 1, University Eye Hospital Tübingen, Germany. andreas.frohn@t-online.de
Thiel
H J
HJ
D000772:Anesthesia, Local; D004867:Equipment Design; D005133:Eye Movements; D005403:Fixation, Ocular; D006801:Humans; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D010775:Photic Stimulation / Q000295:instrumentation*; D012683:Sensory Deprivation; D013813:Therapy, Computer-Assisted