Ophthalmology pics Flashcards Preview

DPD 2020 > Ophthalmology pics > Flashcards

Flashcards in Ophthalmology pics Deck (17)
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1
Q

Anatomy of the eye

A

Nasal aqueduct and lacrimal gland

2
Q

How does short sightedness/myopia work?

A
3
Q

How does long sightedness work?

A
4
Q

What is orbital fat,what is it involved in?

A

Fat around the eye

Can be injuried- causes disease after trauma

5
Q

What is Graves’s orbitopathy

A

Can cause optic nerve compression, inflammation, red eye

Swellng in closed orbit- causes proptosis

Picture: sight threatening thyroid eye disease

6
Q

How can a lymphangioma tumour affect the eye?

A

add pic

7
Q

Embyrology of eye

What embryological abnormalities can affect the eye?

A

Eye is an OUTPOUCHING OF FORE BRAIN- is formed at four weeks

Pathology:

Clefting [facial formation] syndrome

Lazy eye

8
Q

what eye problem is screened for in school

A

lazy eye

9
Q

Definition of blindness

A

Definition of blindness

  • cannot do any work for which eyesight is needed

A visual acuity from 3/60 to 6/60 and full visual field

or impaired visual field

[Up to 6/24 with moderate restriction of visual field, opacities in the media or aphakia

or • 6/18 or better with a gross field defect (eg hemianopia) or a marked constriction of the field (eg glaucoma or retinitis pigmentosa)]

10
Q

How does trachoma spread?

A

Infectious disease- chlamydia trachomatis

Spread by flies

  • Inflammation of conjunctiva
  • Scarring and shrinking of conjunctiva
  • eyelashes inwards
  • Scratches cornea
  • Corneal scarring/opacity
  • Blindness
11
Q

Anatomy of the orbit and extra ocular muscles

A

Nasal aqueduct and lacrimal gland on side

Muscle

Bony “box” of orbit- contains everything

12
Q

What happens in an orbital fracture?

A

Eye is pulled inwards- enopthalmos

Eye muscle [inferior rectus] is trapped by bone- can’t move eye up

Will need surgery to remove trapped muscle

13
Q

What is an iris coloboma?

A

During eye development, optic vesicle doesn’t fuse properly

Pupil not round

14
Q

What is a retinal coloboma?

A

During eye development, optic vesicle doesn’t fuse properly

15
Q

When does lazy eye develop?

A

In the first seven years of life

  • if eye doesn’t develop properly
  • if refractive errors aren’t corrected with glasses
16
Q

How does the eye develop from the age of 0-7 years?

A
17
Q

What percentage of visual impairment is avoidable?

A

80%

Decks in DPD 2020 Class (48):