Automated PRL measurements using a confocal laser ophthalmoscope

Steven F. Barrett; Harry Zwick

doi:10.1117/12.426721

17 May 2001 Automated PRL measurements using a confocal laser ophthalmoscope

Steven F. Barrett, Harry Zwick

Proceedings Volume 4246, Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment; (2001) https://doi.org/10.1117/12.426721
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Ocular motility generated by various fixation strategies show a lower propensity to visit laser damaged retinal areas as compared to non-laser damaged sites. This selectivity provides a non-invasive methodology for characterizing retinal pathology by mapping eye movement visitation under various visual function fixation strategies. Ocular motor techniques for imaging eye movement maps of normal and damaged retinal regions are demonstrated with reference to retinal target location at the retina. Eye movement data digitized from a contrast sensitivity task provided video data of eye movement fixation patterns simultaneously with retmal location oftarget placement dunng periods of visual fixation required in a Landolt ring contrast sensitivity task. These data were digitized with specialized algorithms that linked target location with retmal morphology and pathology In one patient with central macular retmal damage, retmal based maps demonstrated strong consistency with measurements made with nonretina1 higher resolution Purkinje eye movement apparatus. Such eye movement maps differed primarily eye movement density within a given area but were generally comparable with respect focal areas mapped in retinal space. These data suggest that lower resolution video based imaging can provide a non-invasive assessment oflaser induced retinal damage.

Citation Download Citation

Steven F. Barrett and Harry Zwick "Automated PRL measurements using a confocal laser ophthalmoscope", Proc. SPIE 4246, Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment, (17 May 2001); https://doi.org/10.1117/12.426721

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