Part of the book: Novel Aspects in Acute Lymphoblastic Leukemia
Part of the book: Cataract Surgery
Anterior segment optical coherence tomography (AS-OCT) has become an essential tool in the diagnosis and management of corneal degenerations. AS-OCT optical findings and thickness measurements are useful for the proper evaluation of the ocular surface diseases. AS-OCT imaging provides noninvasive information necessary to decide clinical and surgical management. This device helps to achieve a correct pre-intervention investigation and will allow physicians to compare the corneal status after the surgical process. Thus, it is useful to evaluate the corneal thickness, areas of hyper-reflective material, and corneal fibrosis in certain disorders such as Salzmann’s nodular degeneration (SND) and Terrien’s marginal degeneration (TMD), before and following the surgical process.
Part of the book: A Practical Guide to Clinical Application of OCT in Ophthalmology
Spectral domain optical coherence tomography (SD-OCT) is a common useful noninvasive imaging instrument which is used for the diagnosis and follow-up of macular disorders. The clinical findings by OCT in these pathologies are well known. Currently, due to the development of this technology and its wide use, new OCT findings have been reported in the literature. The aim of this chapter is to describe new pathological or abnormal signs and findings in SD-OCT, including hyperreflective spots or dots, flyer saucer sign, outer retinal tubulations, dipping sign, focal choroidal excavation, outer retina-choroid complex splitting, foveal pseudocyst, brush border pattern, dome-shaped macula, pearl necklace sign, choroidal macrovessel, cystoid foveal degeneration, and disorganization of the retinal inner layers (DRIL).
Part of the book: A Practical Guide to Clinical Application of OCT in Ophthalmology
Because of the application of vitreoretinal surgical techniques to a broader range of posterior segment diseases and because cataract develops frequently in postvitrectomy eyes, cataract surgeons should be familiar with the challenges of cataract extraction in vitrectomized eyes. Cataract surgery after pars plana vitrectomy significantly improves visual acuity in 85% of cases, limited by retinal comorbidity and surgical complications. However, despite recent advances, this surgery remains a special challenge. The cataract surgeon can prepare for these challenges with awareness of such potential factors as an excessively mobile posterior capsule, silicon oil removal and special considerations concerning intraocular lens selection and power calculation. And consider the postoperative complications as posterior capsule opacification or refractive errors.
Part of the book: Current Cataract Surgical Techniques