Longitudinal evaluation of selected human laser eye accident cases

Harry Zwick; Bruce E. Stuck; David K. Scales; Jeremiah Brown M.D.; James W. Ness

doi:10.1117/12.350601

18 June 1999 Longitudinal evaluation of selected human laser eye accident cases

Harry Zwick, Bruce E. Stuck, David K. Scales, Jeremiah Brown M.D., James W. Ness

Proceedings Volume 3591, Ophthalmic Technologies IX; (1999) https://doi.org/10.1117/12.350601
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

Two Q-switched military accident cases involving foveal retinal damage were followed for at least two years with a variety of morphological and functional diagnostic techniques. Both cases demonstrated remarkable recovery of visual acuity and contrast sensitivity within 1 to 4 months post exposure. Early deficits in visual acuity, sine wave contrast sensitivity, various measures of color vision, and focal electrophysiological measures all showed remarkable recovery. With the use of a scanning laser ophthalmoscope (SLO), we were able to further evaluate the retinal preference threshold contrast targets and found that small targets requiring foveal resolution were initially placed superior and slightly temporal to the damaged fovea in these eyes, even though visual acuity in these eyes was 20/15 or better. In one of these cases, a return to foveal functionality was demonstrated even though the fovea appeared lightly scarred small test targets were placed at its center for detection. In the second case, the PRL stayed superior temporal. Attempts to force target resolution in this area were unsuccessful. These findings suggest a more active role of neural retinal plasticity in the damage recovery process as well as caution in assuming that all such injuries will exhibit such plasticity.

Citation Download Citation

Harry Zwick, Bruce E. Stuck, David K. Scales, Jeremiah Brown M.D., and James W. Ness "Longitudinal evaluation of selected human laser eye accident cases", Proc. SPIE 3591, Ophthalmic Technologies IX, (18 June 1999); https://doi.org/10.1117/12.350601

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