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YR3: Opthalmology > Cataracts > Flashcards

Flashcards in Cataracts Deck (15)
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1

What is Cataracts?

Opacification of the lens of the eye

2

Describe the aetiology of Cataracts

Most are IDIOPATHIC (age-related)

3

Give 2 local secondary causes of Cataracts

Previous eye trauma
Uveitis

4

Give 4 systemic secondary causes of Cataracts

Diabetes
Metabolic (e.g. Wilson's disease)
Skin disease (e.g. scleroderma)
Drugs (e.g. steroids)

5

Name a congenital secondary cause of Cataracts

Congenital rubella syndrome

6

List 3 risk factors for Cataracts

>65 yrs (BIGGEST RF)
Smoking
Long-term UV exposure

7

Describe the epidemiology of Cataracts

Major cause of treatable blindness worldwide

8

List 6 symptoms of Cataracts

Gradual-onset painless loss of vision
Glare from bright light, halos around lights
Vision may worsen in bright light
Some experience monocular diplopia
Washed-out colour vision (e.g. less richness in colour esp blues)
Some may begin to be able to read without glasses (a sclerotic cataract may increase the lens' converging power)

9

List 3 signs of Cataracts

Loss of red reflex
Hazy lens appearance
Reduced visual acuity

10

List 4 investigations for Cataracts

Fundoscopy
IOP
Glare vision test
Slit lamp examination

11

What is seen on fundoscopy in Cataracts?

Normal
Excludes other causes

12

What are intraocular pressure readings like in Cataracts?

Normal
(if elevated, maybe associated glaucoma)

13

What is seen on the glare vision test in Cataracts?

if cataract is severe there is reduced visual acuity under glare stress

14

What examination can be performed to assess the severity of Cataracts?

Slit lamp examination

15

What may cause loss of the red reflex in children?

Retinoblastoma