<prompt> Papilloedema is characterised by all EXCEPTSudden loss of visionBlurred visionHyperaemic discVenous engorgement marked  <response>: Sudden loss of vision 301- Khurana 4thDifferentiating features of Papilloedema, Papillitis and PseudopapillitisFeaturesPapilloedemaPapillitisPseudopapillitis1. LaterallyUsually bilateralUL or BLMay be UL2. Symptoms i visual acquityTransient attacks of blurred vision Later vision decreases due to optic atrophy Marked loss of vision Sudden onset refractive errorDefective visionii Pain and TendernessAbsent- May be present with ocular movementsAbsent3. Fundus examination i MediaClearPosterior vitreous haze is commonClearii Disc colourRed and juicy appearanceMarked hyperaemiaRaddishDisc marginBlurredBlurredNot well definedDisc swelling2-6 dioptresnot 3DDepending upon the degree of hypermetropiaiii Peripapillary oedemaPresentPresentAbsentsivVenous engorgementMore markedLess markedNot presentv Retinal exudatesvi Retinal hemorragevii MaculaMore marked MarkedLess markedAbsent Macular starUsually not presentNot present4. FieldEnlarged blind spotCentral scatomaNo detect5. Fluorescent angiographyVertical oval pool of dye due to leakageMinimal leakage of dyeNo leakage of dye 