Opthal: Diabetic Retinopathy: Free MSRA Podcast

👁️‍🗨️ Diabetic Retinopathy (DR) – MSRADeep Dive 📝 DefinitionDiabetic Retinopathy (DR) is a microvascular complication of diabetes damaging retinal vessels.Leading cause of visual impairment/blindness in working-age adults.Occurs in both Type 1 & Type 2 diabetes. 🔥 Causes & Risk FactorsChronic hyperglycaemia (high blood sugar)Duration of diabetes ⏳Poor glycaemic control (↑HbA1c)Hypertension, dyslipidaemiaSmoking, microalbuminuria, nephropathy, pregnancyLonger duration = higher riskMnemonic: DURATION ⚡️ PathophysiologyHyperglycaemia → microvascular damage:Microaneurysms, leakage (exudates, haemorrhages)Capillary occlusion (ischaemia)↑ VEGF → neovascularisation (fragile new vessels)Oedema, bleeding, fibrosisMnemonic: DAMAGEDiabetes, Aneurysms, Macular oedema, Angiogenesis, Glaucoma, Exudates/haemorrhage 🏷️ ClassificationNon-proliferative (NPDR): mild, moderate, severe (“4:2:1 rule”)Proliferative (PDR): neovascularisation, vitreous haemorrhage, fibrosisMaculopathy: macular oedema/ischemiaMnemonic: NEW MAC 👀 Clinical FeaturesEarly: often asymptomaticBlurred vision, floaters, fluctuating visionDark spots, visual field loss (late)Sudden vision loss: vitreous haemorrhage/retinal detachment 🔍 InvestigationsFundus photography (screening, grading)OCT (macular oedema)Fluorescein angiography (leakage/ischaemia, guides laser)Visual acuity 🚦 NICE Screening & ReferralAnnual retinal photos (from age 12 or diagnosis)Immediate referral: sudden vision loss, new vessels, pre-retinal/vitreous haemorrhageUrgent referral: proliferative DR, referable maculopathy 💊 Management – “ABC, then LIVES”A: HbA1c (glycaemic) controlB: Blood pressureC: Cholesterol/lipid controlL: Laser (PRP for PDR, focal for maculopathy)I: Intravitreal anti-VEGF (ranibizumab, aflibercept, bevacizumab)V: Vitrectomy (for non-clearing haemorrhage/tractional detachment)E: Eye checks – regular screeningS: Stop smoking ⏳ PrognosisEarly detection/treatment = goodPoor control/advanced disease = high risk of permanent loss 💥 ComplicationsMacular oedemaVitreous haemorrhageTractional retinal detachmentNeovascular glaucomaPermanent blindness 📚 Key Resources (Full URLs)Revision Notes:https://www.passthemsra.com/topic/diabetic-retinopathy-revision-notes/Flashcards:https://www.passthemsra.com/topic/diabetic-retinopathy-flashcards/Accordion Q&A:https://www.passthemsra.com/topic/diabetic-retinopathy-accordion-qa-notes/Rapid Fire Quiz:https://www.passthemsra.com/topic/diabetic-retinopathy-rapid-quiz/Full Quiz:https://www.passthemsra.com/quizzes/diabetic-retinopathy/MSRA Home:https://www.passthemsra.comFree MSRA:https://www.freemsra.com 🏁 Key TakeawaysDiabetes duration & control = riskScreen regularly, act earlyABC, then LIVESLaser/anti-VEGF/vitrectomy = vision saved #MSRA#DiabeticRetinopathy #Ophthalmology #ABCLIVES #Retina #MSRARevision#PasstheMSRA #FreeMSRA