An otherwise healthy 13-year-old Japanese boy presented with reduced central vision in his left eye, 3 days after suffering a blunt trauma from being hit by a fishing sinker. Assessment of BCVA showed only the ability to perceive hand motions in the left eye compared to 20/13.3 in the right eye. The intraocular pressure was 8 mmHg in both eyes. The anterior segment of the left eye showed hyphema and laceration of the bulbar conjunctiva. No traumatic cataract or rupture of the globe was seen. Fundus examination of the left eye showed a subretinal hemorrhage extending from the posterior pole to the inferior midperiphery and a slight vitreous hemorrhage (Fig. ). No retinal tear or retinal detachment was seen. In contrast, the right eye appeared normal. Swept-source optical coherence tomography (OCT; DRI OCT-1 Atlantis, Topcon Medical Systems, Tokyo, Japan) showed the presence of a thick submacular hemorrhage in the left eye (Fig. ). Attempts to measure the retinal sensitivity using a microperimeter (MAIA; CenterVue, Padova, Italy) failed, as it was below the detection limits of the instrument (Fig. ). We therefore diagnosed submacular hemorrhage in the left eye, due to choroidal rupture following blunt trauma.\nTwo days after the initial visit, we carried out anterior chamber lavage, vitrectomy, subretinal injection of rt-PA (GRTPA®, Mitsubishi Tanabe Pharma Corporation, Japan) and air tamponade on the left eye under general anesthesia. This operation was performed using the methods reported by Kimura et al. []. Briefly, after performing a 25-gauge micro-incision vitrectomy, 4,000 IU rt-PA in 0.1 ml was injected subretinally using a 38-gauge subretinal infusion needle (MedOne, Sarasota, FL) to liquefy the submacular hemorrhage. Before completing the operation, fluid-air exchange was performed. The patients remained facedown for 3 days after surgery to displace the submacular hemorrhage. The day after the operation, most of the submacular hemorrhage had moved to the inferior periphery.\nOne month after the operation, the BCVA of left eye was 20/1000 and we observed cataract formation, thin remnants of the submacular hemorrhage and juxtafoveal choroidal rupture (Fig. ). We then carried out phacoemulsification and aspiration, intraocular lens implantation and intravitreal injection of 0.05 ml bevacizumab (Avastin®, Hoffmann-la Roche, Basel, Switzerland) in the left eye under general anesthesia. Two months after the second operation, the submacular hemorrhage had totally disappeared (Fig. ) and the BCVA in the left eye had improved to 20/40. As shown in Fig. , the retinal sensitivity had markedly improved.
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. ).