Ophthalmology Flashcards
Features of anterior uveitis (6)
Anterior uveitis = iritis = iridocyclitis
- acute onset
- irregular pupil
- photophobia
- red eye
- lacrimation
- flares and cells in anterior chamber
Associates conditions to anterior uveitis (4)
Ankylosing spondylitis
Reactive arthritis
Ulcerative colitis
Crohn’s disease
What eye condition is associated with rheumatoid arthritis?
Scleritis
Management of anterior uveitis
Urgent ophthal review
1.Cycloplegics - cyclopentate
=dilates pupil to prevent adhesion between lens and iris
= relieves pain and photophobia
2.prednisolone drops - reduce inflammation
Atropine
Anterior uveitis vs acute angle closure glaucoma (AACG)
AU = marked photophobia Cells + flares in anterior chamber Irregular* pupil - distorted , sluggish reaction Variable IOP Keratitis precipitates on cornea
AACG = Mild photophobia, shallow anterior chamber w/ hard globe on palpating Fixed semi-dilated oval pupil High IOP Hazy/cloudy dull cornea Nausea + vomiting +**dark room.
Treatment of AACG
Pilocarpine Acetazolamide Beta blockers - timolol Steroids Analgesics Antiemetic Surgery - peripheral iridotomy
Stages of diabetic retinopathy
- Non proliferative
- Pre proliferative
- Proliferative
Non proliferative retinopathy features
Dots + blots + hard exudates
Pre - proliferative retinopathy features
Dots + blots + hard exudates + cotton wool spots *
Proliferative retinopathy features
Dots+ blots + hard exudates + Cotton wool spots
+ neovascularisation**
Treatment of proliferative retinopathy
Laser photo coagulation
Hypertensive retinopathy on fundoscopy
Macular oedema + hard exudates + dots + blots
AV nipping + copper/silver wiring +flame shaped haemorrhage
Management of hypertensive retinopathy
Control HTN
What eye condition is associated to multiple sclerosis
Optic neuritis
Features of optic neuritis
Swollen pale optic disc
Eye pain esp on movement
Reduced vision
Reduced colour vision * RED first
Affected structure in optic neuritis
Management
Optic nerve
Corticosteroids
Management of multiple sclerosis
Acute
Long term
Acute = initial methyl pred oral or IV
Long term = Glatiramer acetate or interferon beta
Central retinal artery occlusion CRAO
Features
CRA - branch of ophthalmic - branch of Internal carotid a.
Sudden painless unilateral loss of vision
Fundo - pale/white retinue + cherry red spot at macula + vessel attenuation
Treatment of CRAO
<100 mins of symptoms = firm ocular massage to dislodge occlusion
+ refer
CRAO is associated with?
Giant cell arteritis / temporal arteritis
CRVO features
Sudden painless loss of vision
Hemorrhagic retina - flame shaped
Swollen macula
Engorged tortuous veins
RF for cataracts
High myopia
Long term ORAL steroid use - asthma , COPD, RA, DM
Significant exposure to UV light
Eye trauma
Features of cataracts
Glare at night - lights appear brighter
Dazzling halos
Frequent change of glasses - refraction changes
Fundoscopy of cataract
Dense opacities - cloudy lens
Features of viral conjunctivitis
Commonest organism
Treatment
Redness , no pain
No discharge or serous discharge
Commonly after URTI
Adenovirus
Reassure + supportive (artificial tears)
Treatment of bacterial conjunctivitis
Self care , clean
If longer than week - topical antibiotics = chloramphenicol drops Fusidic acid ( choice for pregnant women )
Features + Treatment of allergic conjunctivitis
Bilateral redness + chemo sis + itching
Swollen eyelids/conjuctiva
Topical antihistamines
Transient loss of vision , sudden + painless
“Curtain falling down”
Dx?
Amaurosis fugax - transient occlusion of central retinal a.
Resolves in 5-30 mins
Sudden painless loss of vision + curtain fall + grey opaque retina ballooning forwards
Dx?
Tx?
Retinal detachment
- flashers. Floaters , visual field loss
Tx - scleral buckling.
Tilt head backwards , surgical/mechanical reattachment
Night blindness + peripheral vision loss (tunnel vision)
Hereditary
Dx?
Next step?
Retinitis pigmentosa - X linked
Referral (routine) to ophthalmologist
- progressive - eventually ends in central blindness
HIV + visual deterioration + retinal haemorrhage and white -yellow **exudates
Dx?
CMV retinitis
Treatment of orbital cellulitis
Admit
IV antibiotics
What nerve is involved in herpes zoster ophthalmicus
Trigeminal (5) - ophthalmic branch
Features of herpes zoster ophthalmicus
Treatment
Complications
Conjunctivitis + keratitis
Pain around eye + painful vesicles/rash
Acyclovir
C- keratitis - dendritic corneal ulcer = treat with topical acyclovir