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Rhino orbital Mucormycosis caused by filamentous fungus of mucoraceae family was considered a rare disease affecting immunocompromised and diabetics with ketoacidosis until the recent COVID 19 pandemic. We are presenting a series of six cases of Rhino orbital cerebral Mucormycosis with central retinal artery occlusion. All six cases had common history of COVID 19 infection in recent past with sinusitis, proptosis and total ophthalmoplegia with central retinal artery occlusion on presentation. MR imaging showed invasive pan sinusitis with orbital and cerebral involvement. Urgent debridement was done and histopathological examination showed broad, filamentous aseptate fungi suggestive of Mucormycosis. All patients inspite of intravenous Amphotericin B with local debridement did not show any improvement and expired within a week of presentation. Hence our study shows poor prognosis of post covid 19 associated Mucormycosis with central retinal artery occlusion.
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Central retinal artery occlusion(CRAO), also known as eye stroke, always results in acute and painless visual loss. At present, conservative treatments, such as eye massage, lowering intraocular pressure and vasodilators have little effect on reducing visual loss. Intra-arterial thrombolysis(IAT)has significantly improved prognosis in patients with acute ischemic stroke, thus IAT has been gradually applied in the treatment of CRAO. IAT injects fibrinolytic drugs directly into the ophthalmic artery by a microcatheter, and dissolves the emboli that block the central retinal artery to restore the blood flow of the retina. Theoretically, IAT may be effective for CRAO as what has been found for stroke, but existing clinical studies exhibited inconsistent results. This paper summarizes the feasibility, efficacy, and safety of IAT treatment in CRAO. It will also analyze related factors that affect the prognosis, putting forward potential development directions and providing insights for the further clinical application of IAT.
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AIM:To investigate the changes in the macular microvasculature in eyes with central retinal artery occlusion(CRAO)and paracentral acute middle maculopathy(PAMM).METHODS: Retrospective study. A total of 27 cases(27 eyes)who diagnosed with CRAO-PAMM and 29 patients(29 eyes)diagnosed as CRAO but with no PAMM were hospitalized in our hospital from January 2020 to December 2021. There were 33 normal people(33 eyes)who underwent physical examination in our hospital selected as control group. Optical coherence tomography angiography(OCTA)was used to measure retinal blood flow and thickness parameters in the 3 mm×3 mm area of the macula. The correlation among macular retinal blood flow density, retinal thickness, foveal avascular zone(FAZ)area, FAZ perimeter, acircularity index(AI), flow density in a 300-μm-wide region around the FAZ(FD-300)and lesion area, best corrected visual acuity(BCVA)in the CRAO-PAMM group was analyzed.RESULTS: Among the three groups, there were significant differences in the overall and parafoveal blood flow density of superficial capillary layer(SCP)and deep capillary layer(DCP), foveal thickness, FAZ area, FAZ perimeter, AI and FD-300(all P<0.05). In the CRAO-PAMM group, the lesion area was negatively correlated with DCP overall and parafoveal blood flow density(r=-0.569, P=0.002; r=-0.543, P=0.004), and positively correlated with the parafoveal thickness(r=0.606, P=0.001); BCVA(LogMAR)was negatively correlated with DCP foveal and parafoveal blood flow density(r=-0.433, P=0.024; r=-0.515, P=0.006), and positively correlated with FAZ area, perimeter and lesion area(r=0.484, P=0.011; r=0.531, P=0.004; r=0.417, P=0.030).CONCLUSION:Patients with CRAO and PAMM have lower macular blood flow density, heavier macular edema and poorer visual acuity, and BCVA may be influenced by both lesion area and FAZ area.
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The storm of COVID?19?associated mucormycosis (CAM) has not yet settled, and it has proven itself a disfiguring and potentially life?threatening disease, complicating the course of COVID?19 infection. Mucormycosis is a rare but devastating fungal infection caused by filamentous fungi of the family Mucoraceae. We report a rare case of a 37?year?old diabetic male with bilateral rhino?orbital?cerebral mucormycosis (ROCM) where it leads to bilateral central retinal artery occlusion (CRAO) as manifestation of the disease. Bilateral CRAO secondary to ROCM is extremely rare. A strong suspicion of CAM in uncontrolled diabetics can result in early diagnosis and management.
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The coagulation abnormalities and thromboembolic complications of coronavirus 2 (SARS-CoV-2) are now a well-established fact. The hypercoagulable state, the tendency for thromboembolism, and a cytokine surge state have been the exclusive reasons for multiorgan failure and other morbidities that have been regularly reported in COVID-19 patients. Ocular involvement in patients with active disease and those who have recovered is uncommon but not rare. We report a case series of four patients with CRVO, BRVO, CRAO, and vitreous hemorrhage in patients with proven COVID-19 infection and no other systemic ailments. The case series also tries to correlate the elevated D-dimer values, which signify a plausible prothrombotic state with the vaso-occlusive phenomenon in the retina leading to significant visual morbidity.
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@#Giant cell arteritis (GCA) is uncommon among Asian population. It is frequently associated with sight threatening complications. Simultaneous bilateral ocular involvement with different pathology is uncommon. We would like to highlight a rare case of GCA that was presented with transient visual loss over the right eye with simultaneous onset of central retinal artery occlusion as well as arteritic anterior ischemic optic neuropathy in both eyes. High dose intravenous methylprednisolone then subsequently maintenance dose of oral steroid and oral aspirin were given. His visual acuity remained the same after treatment. Early diagnosis and treatment of GCA is crucial. Visual outcome can be devastating if treatment is delayed.
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AIM: To observe the macular retina vascular density of patients with acute central retinal artery occlusion(CRAO)by optical coherence tomography angiography(OCTA)and to analyze the relationship with retinal circulation time of these patients on fundus fluorescein angiography(FFA).METHODS: Retrospective case analysis. A total of 43 patients(43 eyes)from January 2019 to March 2021 admitted to Shaanxi Eye Hospital with clinical diagnosis of acute CRAO(course of disease ≤7d)were included. All patients underwent FFA, OCTA, best corrected visual acuity(BCVA)examination and thrombolytic therapy. The patients with enhanced or unchanged retinal blood flow signal in the affected eye showed on OCTA before treatment compared with the contralateral healthy eye were assigned to group A, and the patients with retinal blood flow signal of the affected eye was lower than that in the contralateral healthy eye by OCTA were assigned to group B. Image J software was used for OCTA image processing to evaluate the macular retina vascular density before treatment, and FFA examination was performed to record the affected retinal circulation time before treatment.RESULTS: The retinal vascular density of patients in the affected eye and the contralateral healthy eye in group A was higher than that in group B(25.08%±4.40% vs 12.24%±3.41%, 25.72%±2.70% vs 17.89%±4.55%, all P<0.001), the filling time(FT)of retinal artery trunk to terminal in group B [96(20.50, 193.50)s] was longer than that in group A [11(5.00, 19.50)s](P<0.001). The course of disease, the retinal vascular density of contralateral healthy eye and FT were related factors of retinal vascular density of the affected eye(all P<0.05), and the influence strength order was FT, course of disease and the retinal vascular density of contralateral healthy eye, in which the course of disease and FT was negatively correlated with the retinal vascular density.CONCLUSION: OCTA retinal vascular density was correlated with FFA retinal circulation time in CRAO patients.
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@#Visual loss after non-ocular surgery(VLNOS)includes postoperative visual loss and perioperative visual loss after non-ocular surgery. The former accident consists of the blindness during a surgery or after a surgery, and the latter accident shows the acute visual loss in perioperative period. VLNOS can be appeared in a prone spinal surgery, cardiopulmonary bypass surgery, head and neck surgery, and facial micro-plastic injection treatment, which is a rare, extremely serious complication. VLNOS is divided into predictable and unpredictable condition. Doctors of related subjects have pay attention to VLNOS, and begin to study the possible reasons, and take positive precautions.
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Purpose: To report a series of central retinal artery occlusions (CRAO) following cataract surgery complicated by posterior capsular rupture (PCR). Methods: Data from 14 patients with acute CRAO following cataract surgery was collected for this study including subject demographics, initial and final best-corrected visual acuity, systemic investigations, optical coherence tomography (OCT) and fundus fluorescein angiography (FFA) findings. Results: Mean subject age was 59.9 ± 12.1 years. Male: Female ratio was 1:1. All patients were operated between October and November 2015 and presented with acute vision loss 1 to 4 days after surgery. All the patients underwent cataract surgery under peribulbar anesthesia and had PCR for which anterior vitrectomy (AV) was done. In all the cases Ethylene oxide (ETO) sterilized vitrectomy probe was used for AV. Clinical picture of CRAO was noted in all the cases during the immediate postoperative period. OCT showed inner retinal layer hyperreflectivity while FFA was normal in all the cases. The final visual acuity was poor in all the eyes. This paper discusses the possible mechanisms of CRAO in these cases. Conclusion: CRAO is a potential complication of peribulbar anesthesia for intraocular surgery in patients with vascular risk factors and hence any substance that can aggravate the vasospasm in such patients should be used cautiously. Vasospasm could be caused by ETO as residual ETO could be present in the vitrectomy machine tubing causing toxicity. It is recommended to be cautious while using ETO sterilized instruments for cataract surgery.
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Objective: To study the pathogenesis and the risk factors of eye injury after non-ocular surgery in the patients underwent general anesthesia∗ and to provide the reference for its prevention, diagnosis and treatment. Methods: The clinical materials of two patients with eye injury after non-ocular surgery underwent general anesthesia were analyzed and the related literatures were reviewed. Results: A young woman patient underwent laparoscopic hysterectomy with general anesthesia while positioned Trendelenburg, the eyes were being closed naturally without protection, and corneal abrasion of both eyes occurred after operation. The lesion had completely resolved with no sequelae after treatment. An old man underwent cervical posterior laminoplasty with general anesthesia in prone position developed ischemic optic neuropathy (ION) after operation. The vision of the patients partly recovered after symptomatic treatment. Conclusion: Corneal abrasion is the most frequent ophthalmologic complication during general anesthesia, most of the patients have good prognosis. Postoperative visual loss (POVL) is the most severe ophthalmologic complication without effective treatment available, the delicate reasons and mechanisms are not totally clear, prevention outweighs treatment.
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@#Central retinal artery occlusion and central retinal venous occlusion are rare entities of retinal vascular disorders that can cause sudden visual loss and combined occurrence results in devastating outcomes. The role of protein C deficiency is well established in venous thrombosis however the occurrence of concurrent arterial thrombosis is rare and the combination in association with carotid artery occlusion is an exceptionally rare occurrence. Here we report a case of protein C deficiency presenting as combined central retinal artery occlusion and central retinal venous occlusion with bilateral carotid artery disease
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Objective:To study the pathogenesis and the risk factors of eye injury after non-ocular surgery in the patients underwent general anesthesia, and to provide the reference for its prevention, diagnosis and treatment.Methods:The clinical materials of two patients with eye injury after non-ocular surgery underwent general anesthesia were analyzed and the related literatures were reviewed.Results:A young woman patient underwent laparoscopic hysterectomy with general anesthesia while positioned Trendelenburg, the eyes were being closed naturally without protection, and corneal abrasion of both eyes occurred after operation.The lesion had completely resolved with no sequelae after treatment.An old man underwent cervical posterior laminoplasty with general anesthesia in prone position developed ischemic optic neuropathy (ION) after operation.The vision of the patients partly recovered after symptomatic treatment.Conclusion:Corneal abrasion is the most frequent ophthalmologic complication during general anesthesia, most of the patients have good prognosis.Postoperative visual loss (POVL) is the most severe ophthalmologic complication without effective treatment available, the delicate reasons and mechanisms are not totally clear, prevention outweighs treatment.
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The pathogeneses, clinical features, and management of central retinal artery occlusion (CRAO) are discussed. CRAO consists of the following four distinct clinical entities: non-arteritic CRAO (NA-CRAO), transient NA-CRAO, NA-CRAO with cilioretinal artery sparing, and arteritic CRAO. Clinical characteristics, visual outcome, and management very much depend upon the type of CRAO. Contrary to the prevalent belief, spontaneous improvement in both visual acuity and visual fields does occur, mainly during the first 7 days. The incidence of spontaneous visual acuity improvement during the first 7 days differs significantly (P < 0.001) among the four types of CRAO; among them, in eyes with initial visual acuity of counting finger or worse, visual acuity improved, remained stable, or deteriorated in NA-CRAO in 22%, 66%, and 12%, respectively; in NA-CRAO with cilioretinal artery sparing in 67%, 33%, and none, respectively; and in transient NA-CRAO in 82%, 18%, and none, respectively. Arteritic CRAO shows no change. Recent studies have shown that administration of local intra-arterial thrombolytic agent not only has no beneficial effect but also can be harmful. Investigations to find the cause and to prevent or reduce the risk of any further visual problems are discussed. Prevalent multiple misconceptions on CRAO are discussed.
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Nephrotic syndrome (NS) is a common disease of childhood but ophthalmic manifestations are seldom reported. We report a rare occurrence of bilateral combined central retinal artery and vein occlusion in a 3-year-old with NS. The child presented with bilateral painless loss of vision, central pallid retinae with cherry red spots, vascular tortuosity, and retinal hemorrhages. There was delayed filling of the arteriolar circulation and a delay in arteriovenous transit time on angiography and increased central retinal thickening on optical coherence tomography. She was treated with oral steroids, subcutaneous low molecular weight heparin, and oral acetylsalicylic acid. The central retinae showed resolution of the hemorrhages, tortuosity, edema, and pallor within 3 weeks. Visual acuity recovered bilaterally to 20/360, 20/190, and 20/40 at 1, 3, and 6 weeks, respectively. We discuss the possible reasons for good recovery in our patient. Though bilateral combined central retinal artery and vein occlusion is rare in pediatric NS, the treating physician should be aware of this entity as it can be successfully managed.
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A 30-year-old male with bilateral acute visual loss presented with retinal edema in the posterior pole and peripapillary region with extensive retinal hemorrhages. Fluorescein angiography revealed delayed arterial filling in the right eye and absent arterial filling in the left eye, suggesting bilateral central retinal artery occlusion. Systemic evaluation revealed a history of chronic low-grade fever and generalized lymphadenopathy. HIV (ELISA) was positive, and other systemic comorbidities were ruled out. Cervical lymph node biopsy stained positive for acid-fast bacilli, with large areas of necrosis, palisaded by epithelioid cell granulomas, macrophages, and multinucleated giant cells, suggesting lymph node tuberculosis. Despite antiretroviral and antitubercular therapy, he developed optic atrophy at 4 weeks.
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Objective To observe the center retinal thickness (CRT) and subfoveal choroidal thickness (SFCT) in eyes with central retinal artery occlusion (CRAO) before and after treatment.Methods A total of 34 patients (34 eyes) diagnosed with CRAO by fundus fluorescence angiography (FFA) were retrospectively analyzed.There were 18 males (18 eyes) and 16 females (16 eyes).The average age was (61.42± 14.09) years.The mean onset time was (2.64±3.73) days.The mean hospitalization time was (11.92 ±4.95) days.The mean axial length (AL) was (23.53 ± 2.04) mm.The best-corrected visual acuity (BCVA),slit-lamp biomicroscopy,indirect ophthalmoscopy,fundus color photography,fundus fluorescein angiography,spectral domain optical coherence tomography (OCT) and AL measurement were performed.BCVA was converted to the logarithm of the minimum angle of resolution (logMAR).According to FFA,visual loss and the results of OCT,patients were divided into 3 groups:incomplete CRAO (15 eyes),subtotal CRAO (8 eyes),total CRAO (11 eyes).SFCT and CRT in affected and the fellow eye were measured by OCT for enhanced deep imaging.Follow up lasted for 1 month after treatment,with an average follow-up of (34.71 ± 6.82) days.The changes of S FCT,CRT,and BCVA before and after treatment were observed.The correlation between BCVA after treatment and pretreatment CRT was also analyzed.Results After 1 month of follow-up,the logMAR BCVA in incomplete group,subtotal group and total group were significantly higher than before treatment (t=3.74,3.61,3.26;P=0.004,0.009,0.017).Before treatment,the average CRT of the contralateral eyes in the total,subtotal and incomplete group were (215.00± 19.85),(224.00±22.79),(214.00±8.21) μtm,and the mean SFCT were (264.54± 121.71),(266.50±58.17),(261.86±90.95) μm.The average CRT of the affected eyes were (353.18±60.26),(280.14± 11.08),(266.63±19.65) μtm,and the average SFCT were (233.72± 111.35),(237.75 ± 53.30),(259.86±98.14) mm.Compared with the fellow eyes,the average CRT in the 3 groups were thickened,and the difference were statistically significant (t=8.274,3.694,11.577;P＜0.001,0.008,＜0.001);the average SFCT in the total group was decreased,the difference was statistically significant (t=-2.138,P=0.048).The mean CRT among the 3 groups of eyes was statistically significant (F=1 2.02,P＜ 0.001).There was no significant difference in the average SFCT (F=0.178,P=0.838).After 1 month follow-up,the mean CRT in the total,subtotal and incomplete group were (231.18 ± 49.28),(219.16± 21.34),(217.86± 24.98) μm,and the average SFCT were (239.81 ± 109.57),(241.86±42.81),(260.57±91.67) μan.Compared with before treatment,the average CRT in the three groups of eyes were decreased,the difference were statistically significant (t=13.032,3.711,4.970;P＜0.001,0.008,0.003);the difference in mean SFCT were not statistically significant (t=-0.785,-0.202,-0.078;P=0.466,0.845,0.940).Correlation analysis showed that BCVA after treatment was positively correlated with pretreatment CRT (odds ratio=0.578,P=0.002).Conclusion CRAO resulted in CRT in the preliminary stage and became thinner after receiving treatments.There exists a positive correlation between visual outcome and CRT before receiving treatments.
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PURPOSE: To report a case of orbital apex syndrome (OAS) combined with central retinal artery occlusion (CRAO) and central retinal vein occlusion (CRVO) following blunt trauma. CASE SUMMARY: A 4-year-old female visited the hospital following a traffic accident. She was admitted because of multiple fractures of the skull and pneumocephalus. On day 5, she was referred to us with decreased visual acuity in her right eye. Her initial visual acuity was hand motions in the right eye and 0.8 in the left eye. The right eye showed a dilated pupil, ptosis, and total ophthalmoplegia, and the left eye showed limited abduction. A fundus examination revealed multiple retinal hemorrhages, tortuous veins, and an edematous white retina with a cherry-red spot in the right eye. Brain magnetic resonance imaging revealed an entrapped right optic nerve because of bony fragments in the orbital apex. The patient was diagnosed with OAS accompanied by CRAO and CRVO in the right eye, and with traumatic abducens nerve palsy in the left eye. After 6 months, the visual acuity was hand motions, and the fundus examination showed absorbed retinal hemorrhages, pale discs, and general retinal thinning of the right eye. Ptosis of the right eye and extraocular muscle movement of both eyes were improved. CONCLUSIONS: Combined CRAO and CRVO following trauma is very rare and is even more rarely associated with OAS. It is important for clinicians to be aware of the potential for central retinal vessel occlusions and OAS in cases of blunt ocular trauma.
Subject(s)
Child, Preschool , Female , Humans , Abducens Nerve Diseases , Accidents, Traffic , Brain , Fractures, Multiple , Hand , Magnetic Resonance Imaging , Ophthalmoplegia , Optic Nerve , Orbit , Pneumocephalus , Pupil , Retina , Retinal Artery Occlusion , Retinal Artery , Retinal Hemorrhage , Retinal Vein , Retinal Vessels , Retinaldehyde , Skull , Veins , Visual AcuityABSTRACT
Abstract Postoperative visual loss is a rare and devastating complication. The estimated incidence is 0.01-1% after non ocular surgery. It has been reported after spine, cardiac and head and neck surgeries. We report a patient who was operated for cervical laminectomy in prone position and complained of loss of vision in one eye postoperatively. He was thoroughly investigated after visual loss. The case was diagnosed as central retinal artery occlusion (CRAO) of the left eye. Here we consider the potential etiological factors causing this unilateral loss of vision and try to suggest strategies to reduce the incidence of the complication in spinal surgery.
Resumo A perda visual pós-operatória é uma complicação rara e devastadora. A incidência estimada é de 0,01-1% após cirurgia não oftalmológica. Há relatos de sua ocorrência após cirurgias da coluna, cardíaca e de cabeça e pescoço. Relatamos o caso de um paciente submetido à laminectomia cervical em pronação que se queixou de perda de visão em um dos olhos no pós-operatório. O paciente foi profundamente investigado após a perda visual. O caso foi diagnosticado como oclusão da artéria central da retina (CRAO) do olho esquerdo. Aqui consideramos os potenciais fatores etiológicos que causam essa perda unilateral da visão e tentamos sugerir estratégias para reduzir a incidência dessa complicação em cirurgia de coluna vertebral.