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Evaluation of the Blood-aqueous Humor Barrier using Laser Flare Photometry Following Retinal Cryocoagulation
Eter N., Sbeity S., Vogel A., Spitznas M.,
Rheinische Friedrich-Wilhelms-Universität Bonn, Universitäts-Augenklinik (Bonn)
Purpose: To evaluate the blood-aqueous barrier before and after peripheral 360° retinal cryocoagulation in patients with retinal vascular disorders.
Methods: The anterior chamber of 27 eyes of 27 patients with diabetic retinopathy, central vein occlusion, or Coats disease was measured by laser flare photometry (FC-2000, Kowa Company Ltd.) before as well as 1 day, 1 week, and 1 month after peripheral 360° retinal cryocoagulation.
Results: Mean aqueous flare values before treatment were 16.7 (±9.8) photon counts/ms. One day after retinocryocoagulation flare values increased to a mean of 53.9 (±119.4). One week following treatment mean values had dropped again to 42.0 (±73.7) photon counts/ms. One month after treatment values had decreased to a mean of 19.4 (±12.0) photon counts/ms.
Conclusions: Peripheral 360° retinocryocoagulation does not lead to a permanent disturbance of the blood-aqueous barrier.