Loss of vision Flashcards
When taking a history - if a patient complains of vision loss. What types/aspects of their vision loss must you ask about?
Unilateral/bilateral
Onset - Sudden/gradual & over what period of time
Type of vision loss - blurred/distorted/black?
Associated symptoms - redness, pain etc
Identify these parts of a normal fundoscopy image
What types of ancillary tests can be used to investigate vision loss?
Amsler chart
Colour vision testing
Visual field assessment
Fluorescein angiography
Optical coherence tomography
Tell me about Amsler chart testing
Patient looks at dot in centre of grid (shown below) with one eye
If see wavy/distorted lines - indicates problem with central visual field
What is Fluorescein angiography?
Fluorescent dye is injected into the bloodstream. The dye highlights the blood vessels in the back of the eye so they can be photographed
