#opthal See: [Rosen - Blurred vision](x-devonthink-item://43FF5B61-AC39-42AF-AADD-6BB6C2B8800B?page=20) See also: [[Diplopia]], [[Painless loss of vision]], [[Painful loss of vision]], [[pupil exam]], [[Eye exam]] > Any disturbance in the refraction of light may cause blurred vision. Including, but not limited to: > - corneal infiltrates ([[Eye infections]] or foreign body) > - [[eye trauma]] > - pupillary dilation ([[Mydriasis]]), which results in an increase in the scatter of light rays reaching the lens) > - changes in the refractive properties of the lens or vitreous, which can be seen with corneal edema from rapid osmotic changes. > > Blurred vision may also result from transductive dysfunction due to retinal or optic nerve inflammation or edema. ## DDx - [[Optic neuritis]] — usually monocular - [[Papilloedema]] (eg ↑ ICP) — usually binocular - Toxic metabolic disturbance — usually binocular . Eg [[toxic alcohols#Methanol]] Macular degeneration The below table overlaps with many causes and approaches to eye abnormalities eg [[Diplopia]], [[Painful loss of vision|painful]] and [[Painless loss of vision|painless]] loss of vision, [[Stroke]], [[Red eye]], [[vertigo]], and [[eye trauma]]. Navigate to appropriate notes from the following the flowchart for more info. ![[Pasted image 20250313000952.png]] ## OSCE - [Eastern 2025 exam station](x-devonthink-item://3C7EF973-B708-434F-B298-DFDBA9BC9981)