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 previously healthy, 12-year-old male presented for a routine visit with complaints of a 2-month history of decreased visual acuity in his left eye (LE). Six months before the visit, he suffered blunt trauma to the LE during a struggle, with no medical observation. At the initial visit, BCVA in the LE was counting fingers and in the right eye, it was 20/20. He had neither restricted eye movements nor afferent pupillary defects. Biomicroscopic examination of the anterior segment was normal. Fundus examination of the LE showed a central macular lesion of 1 disc diameter with fibrosis, increased retinal thickness and intraretinal hemorrhage (fig. , left). Peripheral retinal examination was normal. Spectralis OCT (Heidelberg Engineering Inc., Heidelberg, Germany) showed disruption of the IS/OS junction with corresponding increased reflectivity, loss of the outer nuclear layer, cell infiltration of the retinal wall and subretinal fibrosis. Retinal thickness was 289 µm at the site of the lesion (fig. , right). A fluorescein angiography (FA) revealed early impregnation with no diffusion, increasing with time (fig. ). With support from Pediatrics, off-label, high-steroid pulse therapy (intravenous methylprednisolone 500 mg for 3 days and oral prednisolone 30 mg, tapering for 10 days) was done, resulting in an increase of LE BCVA to 20/200 and a decrease of retinal thickness by 71 µm to 218 µm 1 week after treatment. In an attempt to achieve additional improvement without undesired systemic effects, off-label intravitreal triamcinolone acetonide (IVTA; 0.05 ml/2 mg) was administered 2 weeks after oral treatment. LE BCVA improved to 20/150, and retinal thickness decreased by 10 µm 3 weeks after IVTA. Three months after initial presentation, LE BCVA was 20/125 and retinal thickness was 208 µm. However, the alterations in fundoscopy and OCT remained (fig. ).