Retinal Microvasculature in Schizophrenia.

IF 3.1 Q1 OPHTHALMOLOGY
Eye and Brain Pub Date : 2021-07-24 eCollection Date: 2021-01-01 DOI:10.2147/EB.S317186
Steven M Silverstein, Adriann Lai, Kyle M Green, Christen Crosta, Samantha I Fradkin, Rajeev S Ramchandran
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Abstract

Purpose: Schizophrenia is associated with alterations in neural structure and function of the retina that are similar to changes seen in the retina and brain in multiple neurodegenerative disorders. Preliminary evidence suggests that retinal microvasculature may also be compromised in schizophrenia. The goal of this study was to determine, using optical coherence tomography angiography (OCTA), whether 1) schizophrenia is associated with alterations in retinal microvasculature density; and 2) microvasculature reductions are associated with retinal neural layer thinning and performance on a measure of verbal IQ.

Patients and methods: Twenty-eight outpatients with schizophrenia or schizoaffective disorder and 37 psychiatrically healthy control subjects completed OCT and OCTA exams, and the Wechsler Test of Adult Reading.

Results: Schizophrenia patients were characterized by retinal microvasculature density reductions, and enlarged foveal avascular zones, in both eyes. These microvascular abnormalities were generally associated with thinning of retinal neural (macular and peripapillary nerve fiber layer) tissue (but the data were stronger for the left than the right eye) and lower scores on a proxy measure of verbal IQ. First- and later-episode patients did not differ significantly on OCTA findings.

Conclusion: The retinal microvasculature impairments seen in schizophrenia appear to be a biomarker of overall brain health, as is the case for multiple neurological conditions. Additional research is needed, however, to clarify contributions of social disadvantage and medical comorbidities to the findings.

精神分裂症患者的视网膜微血管
目的:精神分裂症与视网膜神经结构和功能的改变有关,这些改变与多种神经退行性疾病中视网膜和大脑的变化相似。初步证据表明,精神分裂症患者的视网膜微血管也可能受到损害。本研究的目的是利用光学相干断层血管造影术(OCTA)确定:1)精神分裂症是否与视网膜微血管密度的改变有关;2)微血管的减少是否与视网膜神经层变薄和言语智商的表现有关:28名精神分裂症或精神分裂情感障碍门诊患者和37名精神健康的对照受试者完成了OCT和OCTA检查以及韦氏成人阅读测试:精神分裂症患者双眼视网膜微血管密度降低,眼窝无血管区扩大。这些微血管异常通常与视网膜神经(黄斑和毛周神经纤维层)组织变薄有关(但左眼的数据比右眼更强),而且在言语智商的替代测量中得分较低。初发和后发患者在OCTA结果上没有明显差异:结论:精神分裂症患者视网膜微血管受损似乎是大脑整体健康的生物标志物,多种神经系统疾病也是如此。然而,还需要进行更多的研究,以明确社会不利条件和并发症对研究结果的影响。
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来源期刊
Eye and Brain
Eye and Brain OPHTHALMOLOGY-
CiteScore
7.90
自引率
2.30%
发文量
12
审稿时长
16 weeks
期刊介绍: Eye and Brain is an international, peer-reviewed, open access journal focusing on basic research, clinical findings, and expert reviews in the field of visual science and neuro-ophthalmology. The journal’s unique focus is the link between two well-known visual centres, the eye and the brain, with an emphasis on the importance of such connections. All aspects of clinical and especially basic research on the visual system are addressed within the journal as well as significant future directions in vision research and therapeutic measures. This unique journal focuses on neurological aspects of vision – both physiological and pathological. The scope of the journal spans from the cornea to the associational visual cortex and all the visual centers in between. Topics range from basic biological mechanisms to therapeutic treatment, from simple organisms to humans, and utilizing techniques from molecular biology to behavior. The journal especially welcomes primary research articles or review papers that make the connection between the eye and the brain. Specific areas covered in the journal include: Physiology and pathophysiology of visual centers, Eye movement disorders and strabismus, Cellular, biochemical, and molecular features of the visual system, Structural and functional organization of the eye and of the visual cortex, Metabolic demands of the visual system, Diseases and disorders with neuro-ophthalmic manifestations, Clinical and experimental neuro-ophthalmology and visual system pathologies, Epidemiological studies.
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