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OCT OF MCULAR DISEASES

OCT OF MCULAR DISEASES. DEHGHANI.A. near infrared light cross-sectional images of tissue High resolution ) 10 µ ( Non contact. highest reflections →red and white colours Lowest reflections →blue and black. 2 red bands →RNFL and RPE green/yellow band →Ganglions cell layer

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OCT OF MCULAR DISEASES

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  1. OCT OF MCULAR DISEASES DEHGHANI.A

  2. near infrared light • cross-sectional images of tissue • High resolution) 10 µ ( • Non contact

  3. highest reflections →red and white colours • Lowestreflections→blue and black

  4. 2 red bands →RNFL and RPE • green/yellow band →Ganglions cell layer • blue/black band → Photoreceptor layer

  5. Reflectivity • Increased : inflammatory infiltrate, fibrosis, exudates and hemorrhage • Decreased reflectivity : retinal edema, hypopigmentation of the RPE • decreased uniformly :abnormalities of the media )small pupil (

  6. Retinal thickness Increased : accumulation of intraretinal fluid (diabetic retinopathy, cystoid macular oedema, retinal traction (Decreased :scarring or atrophy

  7. Diabetic Macular Edema AMD CSCR Macular Hole Retinal Vascular Occlusions Retinal Vasculitis Epiretinal Membranes 8. CNV 9.Juxtafoveal Telangiectasia 10.Heredodystrophic Disorders Photic Maculopathy 11. Inflammatory Diseases of Retina-choroid 12.Retinal Angiomatosis Proliferation 13.Trauma 14.Macular Evaluation following Retinal Detachment Surgery 15.Foveal Hemorrhage 16.Intraocular Metastasis

  8. DIABETIC MACULAR EDEMA

  9. ROLE OF OCT IN DIABETIC MACULAR EDEMA A.Defining the Disease Pattern B. Defining Indications for Pars Plana Vitrectomy C. Longitudinal Tracking of Tissue Alteration following An Intervention

  10. Defining the Disease Pattern 1.Sponge-like retinal thickness 2.Cystoid macular edema 3. Subfoveal serous retinal detachment 4. Foveal tractional retinal detachment 5. Taut posterior hyloid membrane

  11. After PRP

  12. OCT IN AMD • Disease categorization • Management issues • Define indications for therapy • Monitor response to the therapy

  13. NON-NEOVASCULAR ARMD -Drusens - Geographic Atrophy • Neovascular ARMD -classic CNV -occult CNV -serous PED -hemorrhagic PED -fibrovascular PED

  14. OCT helps in the management of ARMD in the following ways: -Disease categorization -Early occult CNVM -Associated changes -Response to treatment

  15. OCT IN CSCR • Typical CSCR -Serous retinal detachment -Serous retinal detachment with PED • Atypical CSCR -Small PEDs -Chronic CSCR -CSCR in elderly

  16. OCT in diagnosing complications of CSCR → CNV → Subretinal fibrin → RPE rip → Neurosensory atrophy of fovea

  17. SOLAR BURN • Diagnose subtle changes in the RPE-photoreceptorcomplex

  18. OCT IN EPIRETINAL MEMBRANE • Confirming the diagnosis • Identify the structural alterations • Longitudinal tracking of these eye following of vitrectomy

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