A 46-year-old male army colonel sustained blunt injury to the right eye following direct contact with a tennis ball to the closed eyelid. Three hours later, visual acuity was 20/30 in the right eye and 20/20 in the left eye with central corneal abrasion, mild anterior chamber cells, flare, and a localized gray-white oval discoloration in the macula of the right eye. Topical corticosteroid ointment and systemic corticosteroid (50 mg prednisone daily for 5 days) were started. At 20 h following trauma, high-definition SD-OCT and OCTA were obtained through clear cornea.
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. ).