Opthalmology Flashcards
What is word for short sightedness
Miopia- long eye ball
What is word for long sightedness
Hypermetropia- short eyeball
What nerve innvervates lateral rectus
Abducens
What nerve innervates superior oblique
Trochlear
Complication of graves disease on eye
Extreme exopthalmos compresses optic nerve leading blindness
What can cause exopthalmos
Graves
Tumour behind eye
Extreme inflammation
Effects of orbital fractures
Can trap msucles leading to paralysis of that muscle
Causes of uveitis
Sarcoid
UC
When is eye development complete
7 years
Legal definition of blindness
So blind they cant dp any work for which eyesight is essential
Leading worldwide causes of avoidable visual impairment
Cataracts
Uncorrected refractive errors
Leading causes worldwide of avoidable blindness
Unoperated cataracts or glaucoma
Consequences of visual impairment
More likely to be unemployed
More likely to be in fall or car crash
More likely to be depressed or anxious
Which people are at greatest risk of sight loss
Women
BAME
Most common causes of visual impairment over 65
AMD
Glaucoma
Diabetes
2 types of AMD
Wet
Dry
Fundoscopy finding wet AMD
Blood at macula
Sx wet AMD
Sudden vision loss
Distortion
How to prevent wet AMD
Avoid smoking
Good CVS health
Treatment for wet AMD
Anti VEGF injection
Control of diabetic retinopathy
Hb1ac
BP
Lipids
Tx diabetic retinopathy
Intra vitreal Anti VEGF
Photocoagulation
Glaucoma risk factor
HTN
BAME
Fundoscopy finding of glaucoma
Increased optic disc cup size
Increased cup/disc ratio
What happens to vision in glaucoma
Reduction in visual field- screening is done by testing their fields
Visual changes in cataracts
Acuity and contrast decreases