OCT - Applications in Ophthalmology最新文献

Optical Coherence Tomography: Essential Tool in Macular Hole Management 光学相干断层扫描:黄斑孔管理的基本工具

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.79279

S. Tinwala

{"title":"Optical Coherence Tomography: Essential Tool in Macular Hole Management","authors":"S. Tinwala","doi":"10.5772/INTECHOPEN.79279","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.79279","url":null,"abstract":"Optical coherence tomography (OCT) is a noninvasive, diagnostic technique for accu- rately identifying and quantitatively characterizing macular holes. OCT is crucial in assessing fellow eyes of patients with a macular hole to detect preclinical changes leading to subsequent hole formation. The tomographic information provided by OCT, akin to an in vivo biopsy, has led to a better understanding of the pathogenesis of hole formation. The cross-sectional view produced by OCT effectively distinguishes full-thickness macu lar holes from mimicking conditions like lamellar holes, macular pseudoholes, and cysts, which may sometimes be difficult to differentiate clinically. This information enables early diagnosis and can guide the intervention of choice when treatment is deemed nec- essary. OCT is useful to prognosticate cases, thereby facilitating discussions with patients and managing visual expectations preoperatively. Intraoperative OCT (iOCT) can iden- tify intraoperative changes in the macular anatomy during surgery that can influence functional outcomes. Postoperatively, OCT is extremely useful for documenting serial changes in the foveal architecture and is helpful in correlating functional and anatomic outcomes. As the technology continues to improve, OCT has become indispensable for all aspects of patient care for macular holes.","PeriodicalId":228355,"journal":{"name":"OCT - Applications in Ophthalmology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116015090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OCT in Lamellar Corneal Transplantation 层状角膜移植的OCT研究

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78294

M. C. Ozmen, H. B. Özdemir

引用次数: 0

Retinal Vasculature Identification and Characterization Using OCT Imaging 视网膜血管识别和表征的OCT成像

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78292

J. D. Moura, J. Novo, J. Rouco, N. Barreira, M. G. Penedo, M. Ortega

{"title":"Retinal Vasculature Identification and Characterization Using OCT Imaging","authors":"J. D. Moura, J. Novo, J. Rouco, N. Barreira, M. G. Penedo, M. Ortega","doi":"10.5772/INTECHOPEN.78292","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.78292","url":null,"abstract":"The eye fundus is the part of the human body where the blood vessels can be directly observed and studied. For this reason, the analysis and diagnosis of many relevant diseases that affect the circulatory system, for example, reference, hypertension, diabetes or arteriosclerosis can be supported by the use of this source of information, analyzing their degree of severity and impact by the study of the properties of the retinal microcirculation. The development of computer aided-diagnosis tools became relevant over the recent years as they support and facilitate the work of specialists, helping to accurately identify the target structures in many processes of analysis and diagnosis. In that sense, the automatic identification of the retinal vasculature is crucial as its manual identification is an exhaustive and tedious work when it is manually performed by the experts. This chapter presents an analysis of the characteristics of the optical coherence tomography imaging and its potential for the retinal vascular identification and characterization. In that sense, we also analyze computational approaches to automatically obtain and characterize the retinal vasculature and provide an intuitive visualization that facilitates the posterior clinical analysis of relevant diseases such as hypertension or diabetes.","PeriodicalId":228355,"journal":{"name":"OCT - Applications in Ophthalmology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126751658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Spectral Domain Optical Coherence Tomography in the Diagnosis and Monitoring of Diabetic Macular Edema 光谱域光学相干断层扫描诊断和监测糖尿病黄斑水肿

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78681

S. Nicoară

引用次数: 1

Imaging the Cornea, Anterior Chamber, and Lens in Corneal and Refractive Surgery 角膜和屈光手术中角膜、前房和晶状体的成像

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78293

T. Eppig, S. Mäurer, L. Daas, B. Seitz, A. Langenbucher

引用次数: 8

Novel Insight into Morphological Features and Vascular Profile of Selected Macular Dystrophies Using Swept-Source Optical Coherence Tomography and Optical Coherence Tomography Angiography 利用扫描源光学相干断层扫描和光学相干断层扫描血管造影对选定的黄斑营养不良症的形态特征和血管分布的新见解

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78679

M. Moussa, M. Leila

{"title":"Novel Insight into Morphological Features and Vascular Profile of Selected Macular Dystrophies Using Swept-Source Optical Coherence Tomography and Optical Coherence Tomography Angiography","authors":"M. Moussa, M. Leila","doi":"10.5772/INTECHOPEN.78679","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.78679","url":null,"abstract":"Our perception of macular dystrophies has evolved overtime from collective grouping into hereditary disorders of unclear etiology and no effective treatment to avid search for the underlying pathogenic mechanism that would provide base for future therapy. A causal conjunction between abnormalities in the photoreceptors layer and the RPE— Bruch’s membrane complex and abnormal profile of the retinal vascular plexuses and the choriocapillaris—stands out as a plausible theory of pathogenesis. The recently introduced swept-source optical coherence tomography (SS-OCT) technology incorpo- rates long-wavelength (1050-nm) scanning light, less susceptibility to sensitivity roll-off, and ultrahigh-speed image acquisition. These features enabled in vivo noninvasive visualization of different strata of the outer retina and the choriocapillaris with unprec edented finesse. Furthermore, the SS-OCT technology incorporated a blood flow detec - tion algorithm; OCTARA that in tandem with the deeper penetration and superior axial resolution of SS-OCT enabled detailed assessment of the retinal capillary plexuses and the choriocapillaris in terms of structure and density. This novel technology could help explore yet undiscovered frontiers in the pathophysiology of macular dystrophies and guide future therapeutic approaches. This chapter includes a review of literature along with the authors’ experience in imaging selected macular dystrophies using SS-OCT and SS-OCT angiography (SS-OCTA). stem cell transplantation before irreversible visual dysfunction sets in.","PeriodicalId":228355,"journal":{"name":"OCT - Applications in Ophthalmology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125337813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Clinical Use of OCT in the Management of Epiretinal Membranes OCT在视网膜前膜治疗中的临床应用

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.79770

N. Acar

引用次数: 1

iOCT in PVR Surgical Management iOCT在PVR手术管理中的应用

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78774

Salvatore Di Lauro, S. P. Idoate, J. Pastor

引用次数: 0

OCT in Glaucoma Diagnosis, Detection and Screening OCT在青光眼诊断、检测和筛查中的应用

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.78683

Aydın Yildiz

{"title":"OCT in Glaucoma Diagnosis, Detection and Screening","authors":"Aydın Yildiz","doi":"10.5772/INTECHOPEN.78683","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.78683","url":null,"abstract":"Glaucoma is a chronic and progressive optic neuropathy in which increased intraocular pressure is the most important risk factor in the etiopathogenesis. The basic pathology is the progressive loss of retinal ganglion cells (RGCs) especially the death of the axons of ganglion cells initially (apoptosis), followed by peripapillary retinal nerve fiber layer (RNFL) defects. Since optical coherence tomography (OCT)’s first demonstration in 1991 by Huang et al. and introduction commercially in 1996, it began gaining popularity in 2000s for retinal evaluation and the detection, diagnosis, and follow-up of glaucoma. Previously available OCT instruments used a technique referred to as time-domain (TD-) OCT, followed by spectral-domain (SD-) OCT, which has an increased scan acquisition rate, allowing for a more detailed sampling of the area of interest. Recently, swept-source OCT (SS-OCT), a newer generation of OCT, has been introduced. Clinical assessment using multiple parameters, including peripapillary RNFL, ganglion cells, optic nerve head, and macular parameters, has proven useful for managing and diagnosing glaucoma as well as for evaluating risk in glaucoma suspects. In this chapter, we aim to evaluate the use of OCT and its modalities in diagnosis, screening, and progression of glaucoma.","PeriodicalId":228355,"journal":{"name":"OCT - Applications in Ophthalmology","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127651418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

OCT Application Before and After Cataract Surgery 白内障手术前后OCT应用

OCT - Applications in Ophthalmology Pub Date : 2018-09-19 DOI: 10.5772/INTECHOPEN.77281

Xiaogang Wang, Jing Dong, Suhua Zhang, Bin Sun

引用次数: 4