A 48-year-old male obtained a whiplash neck injury and a fracture of the articulate processes of the 7th neck vertebrae from a traffic accident. Two days later, he reported blurred vision in the left eye (LE). Although the best corrected visual acuity (BCVA) was 20/25, Amsler grid test was positive. There was preretinal paramacular hemorrhage on fundus examination. OCT, OCTA, visual field (VF) examination, fluorescein angiography (FA), and multifocal electroretinogram (mfERG) were performed. To analyze foveal structure and thickness, we utilized a swept-source (SS)-OCT and OCTA system (Triton, Topcon, Tokyo, Japan). The central retinal thickness (CRT) was defined as the average thickness in the central circle area. For OCTA, 4.5 × 4.5 × 4.5 mm3 macular cubes were obtained. En face images of the retinal vasculature were created from the superficial capillary layer (SCL) and deep capillary layer (DCL), based on the automated layer segmentation. The FAZ area was defined as the area inside the central border of the capillary network and was manually delineated on the inner border using the standard software and then calculated automatically. VF was measured in macular program (M program, Octopus 900, Haag-Streit, USA) and mfERG and FA (Canon) were performed accordingly. OCT showed no fluid but a slight disruption of the outer plexiform layer (OPL), outer nuclear layer (ONL), retinal pigment epithelial (RPE) layer, and photoreceptors (PR) with hyper-reflectivity of the ellipsoid zone (EZ) and interdigitation zone (IZ) and remained unchanged throughout the 1-year follow-up (Fig. ). CRT was 241 and 257 μm for the LE and RE, respectively. VF showed fixed central scotoma (Fig. ). mfERG was unremarkable. FA revealed late paramacular hyperfluorescence in both eyes. OCTA showed an enlarged FAZ area in the SCL of 334,402 μm2 in the LE as compared to 253,521 μm2 in the RE, as well as in the DCL, measuring 814,944 μm2 in the LE as compared to 311,858 μm2 in the RE, respectively (Fig. ).
A 7-year old boy presented 1 day after injury to the right eye. The left was normal. The right eye vision was 6/18. There were abrasions on the cornea. Anterior chamber had cells of 1+ and flare of 2+. Fundus examination showed a double humped sub-foveal bleed. The retina over the macula looked edematous clinically. OCT done at presentation showed blood between the RPE and ellipsoid layer. The ellipsoid and ELM layer over the blood lost its clear distinction and looked thickened due to edema. OCT line scan showed two areas of breaks in the RPE/BM complex measuring 103 and 185 μm [ pre]. One week later since the sub-macular blood persisted, he underwent pars plana vitrectomy, sub retinal tissue plasminogen activator injection, and SF6 gas replacement of the vitreous cavity using the technique described previously.[] A month later the vision improved to 6/9. The fundus picture and OCT line scan after surgery is shown in . Clinically macular area showed multiple stellate lines under the retina that did not correspond to areas of choroidal rupture. The ELM layer and ellipsoid layer were continuous under the foveola. There was scar tissue between the photoreceptor layer and RPE corresponding to the yellowish gray area under the fovea seen clinically. Full thickness neurosensory retinal defect was seen at the site of retinotomy. The RPE/BM complex break near the retinotomy was plugged with scar tissue. There were some cystic changes in the margin of the retinotomy site. At the site of the rupture corresponding to the area in pre, there was scarring and closure of the BM break like in the previous two cases [ post].\ngives an overview of the cases presented. As has been noted above besides a break in the BM, the SSOCT showed blood between RPE and ellipsoid layer, and variable amounts of edema of the inner retinal layers in all the three acute cases. The gap in the BM ranged from 103 to 465 μm. The inner neuro-sensory retina and the Sattler's and Haller's layers of the choroid did not show any disruption in the acute stage.\nOCT after a month of the injury showed scar tissue involving Sattler's layer, choriocapillary layer, BM, RPE, ellipsoid layer, ELM, and outer nuclear layer in all the cases.