PMID- 25788649 OWN - NLM STAT- MEDLINE DCOM- 20150825 LR - 20150617 IS - 1552-5783 (Electronic) IS - 0146-0404 (Linking) VI - 56 IP - 4 DP - 2015 Apr TI - In Vivo Imaging of Subretinal Bleb-Induced Outer Retinal Degeneration in the Rabbit. PG - 2423-30 LID - 10.1167/iovs.14-16208 [doi] AB - PURPOSE: To analyze the morphologic effects of subretinal blebs in rabbits using real-time imaging by spectral-domain optical coherence tomography (SD-OCT), infrared-confocal scanning laser ophthalmoscopy (IR-cSLO), and blue-light fundus autofluorescence (BAF). METHODS: Subretinal blebs of PBS or balanced salt solution (BSS) were induced in albino or pigmented rabbits using a transvitreal pars plana technique. Spectral-domain optical coherence tomography, IR-cSLO, and BAF were done at multiple intervals for up to 12 weeks after subretinal bleb injection. The morphologic effects were compared with histologic analysis on hematoxylin-eosin-stained sections of the neurosensory retina and on flat-mounts of phalloidin-labeled RPE. RESULTS: Scans of SD-OCT of the normal rabbit posterior segment revealed 11 bands including six layers of the photoreceptors. Subretinal blebs of PBS or BSS caused acute swelling of the neurosensory retina followed by gradual atrophy. Outer retinal thickness was significantly reduced with pronounced degeneration of all the photoreceptor OCT layers. En face IR-cSLO showed a hyperreflective area corresponding to the progressive photoreceptor degeneration, whereas BAF revealed both hyper- and hypofluorescent changes in the RPE layer. The in vivo results were confirmed by histology and on subretinal flatmounts demonstrating extensive photoreceptor loss and disruption of the RPE mosaic. CONCLUSIONS: Subretinal blebs induce pronounced photoreceptor degeneration and RPE changes in the rabbit as demonstrated by in vivo imaging using SD-OCT, IR-cSLO, and BAF. FAU - Bartuma, Hammurabi AU - Bartuma H FAU - Petrus-Reurer, Sandra AU - Petrus-Reurer S FAU - Aronsson, Monica AU - Aronsson M FAU - Westman, Sofie AU - Westman S FAU - Andre, Helder AU - Andre H FAU - Kvanta, Anders AU - Kvanta A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 SB - IM MH - Animals MH - *Diagnostic Imaging MH - Disease Models, Animal MH - Fluorescein Angiography/*methods MH - Fundus Oculi MH - Ophthalmoscopy/*methods MH - Photoreceptor Cells, Vertebrate/*pathology MH - Posterior Eye Segment/*pathology MH - Rabbits MH - Reproducibility of Results MH - Retinal Degeneration/*diagnosis/etiology MH - Tomography, Optical Coherence/*methods EDAT- 2015/03/20 06:00 MHDA- 2015/08/26 06:00 CRDT- 2015/03/20 06:00 PHST- 2015/03/20 06:00 [entrez] PHST- 2015/03/20 06:00 [pubmed] PHST- 2015/08/26 06:00 [medline] AID - iovs.14-16208 [pii] AID - 10.1167/iovs.14-16208 [doi] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2015 Apr;56(4):2423-30. doi: 10.1167/iovs.14-16208.