PMID- 23887804 OWN - NLM STAT- MEDLINE DCOM- 20131105 LR - 20220309 IS - 1552-5783 (Electronic) IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 54 IP - 9 DP - 2013 Sep 5 TI - Optical coherence tomography study of experimental anterior ischemic optic neuropathy and histologic confirmation. PG - 5981-8 LID - 10.1167/iovs.13-12419 [doi] AB - PURPOSE: The optic nerve is part of the central nervous system, and interruption of this pathway due to ischemia typically results in optic atrophy and loss of retinal ganglion cells. In this study, we assessed in vivo retinal changes following murine anterior ischemic optic neuropathy (AION) by using spectral-domain optical coherence tomography (SD-OCT) and compared these anatomic measurements to that of histology. METHODS: We induced ischemia at the optic disc via laser-activated photochemical thrombosis, performed serial SD-OCT and manual segmentation of the retinal layers to measure the ganglion cell complex (GCC) and total retinal thickness, and correlated these measurements with that of histology. RESULTS: There was impaired perfusion and leakage at the optic disc on fluorescein angiography immediately after AION and severe swelling and distortion of the peripapillary retina on day-1. We used SD-OCT to quantify the changes in retinal thickness following experimental AION, which revealed significant thickening of the GCC on day-1 after ischemia followed by gradual thinning that plateaued by week-3. Thickness of the peripapillary sensory retina was also increased on day-1 and thinned chronically. This pattern of acute retinal swelling and chronic thinning on SD-OCT correlated well with changes seen in histology and corresponded to loss of retinal ganglion layer cells after ischemia. CONCLUSIONS: This was a serial SD-OCT quantification of acute and chronic changes following experimental AION, which revealed changes in the GCC similar to that of human AION, but over a time frame of weeks rather than months. FAU - Ho, Joyce K AU - Ho JK AD - Department of Ophthalmology, Stanford University School of Medicine, Stanford, California, USA. FAU - Stanford, Madison P AU - Stanford MP FAU - Shariati, Mohammad A AU - Shariati MA FAU - Dalal, Roopa AU - Dalal R FAU - Liao, Yaping Joyce AU - Liao YJ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130905 PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 SB - IM MH - Animals MH - Disease Models, Animal MH - Fluorescein Angiography MH - Fundus Oculi MH - Lasers/adverse effects MH - Mice MH - Mice, Inbred C57BL MH - Optic Disk/*pathology MH - Optic Neuropathy, Ischemic/etiology/*pathology MH - Reproducibility of Results MH - Retinal Ganglion Cells/*pathology MH - Severity of Illness Index MH - Tomography, Optical Coherence/*methods PMC - PMC3771554 OTO - NOTNLM OT - AION OT - SD-OCT OT - animal model OT - optic neuropathy OT - retinal ganglion cell EDAT- 2013/07/28 06:00 MHDA- 2013/11/06 06:00 PMCR- 2014/03/01 CRDT- 2013/07/27 06:00 PHST- 2013/07/27 06:00 [entrez] PHST- 2013/07/28 06:00 [pubmed] PHST- 2013/11/06 06:00 [medline] PHST- 2014/03/01 00:00 [pmc-release] AID - iovs.13-12419 [pii] AID - 10.1167/iovs.13-12419 [doi] PST - epublish SO - Invest Ophthalmol Vis Sci. 2013 Sep 5;54(9):5981-8. doi: 10.1167/iovs.13-12419.