Llygaid Flashcards
What is used to measure visual acuity?
Snellen chart
Should corrected lenses/ glasses be worn when assessing visual acuity?
Yes
How do you asses a patient’s visual acuity?
Test each eye individually, test at 6m or 3m for 3m chart
Record the number next to lowest line read
Detest using pin holes if not 6/6 to exclude refractive errors
Move patient closer to chart if needed and record that as distance
What structure of the eye is avascular?
The cornea
What are important questions to ask in eye history?
Has your vision been affected? Are your eyes uncomfortable?
Previous opthlamic disease/surgery? History of ocular injury? Any history of lazy eye? Any history of spectacle/contact lens wear? Tobacco/ alcohol/ occupation/ driving?
At what distance do you test red reflex?
Arms length
What are the three Cs of the optic disk?
Cup, Colour, Contour
You must tell the DVLA if you have any problems with your eyesight that affects both eyes, or one eye if you only have one eye… unless?
You’re long/ short sighted or colourblind.
If there’s an eye issue, who needs to tell the DVLA?
The patient does so the DVLA will arrange their own specific tests to see if his eye sight meets current driving standards
What eye conditions affect central vision?
Cataracts, age related macular degeneration, diabetic eye disease
What is the sudden onset of floaters with shadow in one eye suggestive of?
Retinal detachment
What are the risk factors for retinal detachment?
Myopia (they have larger eyeballs resulting in thinner retina at periphery)
Trauma (causes high velocity vitreous movements and therefore traction on the retina)
What are medications used to relieve acute attack of AACG?
Pilocarpine, carbonic anhydrase inhibitors, beta blockers, steroid drops
What is the treatment for bacterial conjunctivitis?
Chloramphenicol eye drops and topical lubricants
What condition can cause progressive weakness of eyelid and ocular muscles?
Myasthenia gravis
