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Ophthalmology Rotation > Lens and Vitreous > Flashcards

Lens and Vitreous Flashcards

1
Q

lens and vitreous (meekins)

Lens Anatomy

A
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2
Q

lens and vitreous (meekins)

Lens Physiology

A
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3
Q

Lens Congenital Defects

A

• Persistent fetal vasculature
– Persistent hyaloid artery (or remnant)
• Pupillary membrane
– Iris-to-lens PPM (focal cataract)
– Axial anterior lens capsule pigment spots

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4
Q

lens and vitreous (meekins)

Nuclear Sclerosis

A
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5
Q

lens and vitreous (meekins)

Cataract

  • what
  • classification
  • reflexes
A

• Cataract = opacity in the lens or capsule
• Classification
– Etiology
– Age of onset
– Location in lens
– Stage of development
• Patient with a cataract should have a normal PLR and dazzle reflex!

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6
Q

lens and vitreous (meekins)

Cataract Etiology

A
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7
Q

lens and vitreous (meekins)

Cataract Age of Onset

A
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8
Q

lens and vitreous (meekins)

Cataract Location

A
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9
Q

lens and vitreous (meekins)

Cataract Stage

A
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10
Q

Lens Metabolism

A
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11
Q

Why should you worry about cataracts
(other than causing vision loss)?

A
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12
Q

lens and vitreous (meekins)

Cataract Medical Therapy

A
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13
Q

lens and vitreous (meekins)

Cataract Surgery

A
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14
Q

lens and vitreous (meekins)

Cataract Surgery Work-Up

A
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15
Q

lens and vitreous (meekins)

Cataract Surgery Complications

A
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16
Q

Lens luxation

17
Q

Lens Luxation – describe based on lens position

18
Q

Lens Luxation

  • primary
  • secondary
19
Q

lens and vitreous (meekins)

Anterior Lens Luxation Treatment

20
Q

lens and vitreous (meekins)

is lens luxation an emergency?

21
Q

lens and vitreous (meekins)

Lens Luxation Management

  • primary lens subluxation
  • posterior lens luxation
22
Q

Vitreous

23
Q

Vitreous Abnormalities

24
Q

Asteroid Hyalosis

A

• Small white particles within vitreous
– Calcium or phospholipids
– “Snow globe” effect
– Move with eye movement
• Usually incidental finding

25
Q

lens and vitreous (meekins)

Summary

  • The optimal stage for cataract surgery is…
  • Cataracts are…, but nuclear sclerosis is…
  • Anterior lens luxation is…
  • Lens subluxation and posterior luxation are often managed medically with…
A
  • The optimal stage for cataract surgery is immature (vision impairment but no LIU)
  • Cataracts are opacities that block light, but nuclear sclerosis is an expected aging change that causes hardening of the central lens (decreased accommodation)
  • Anterior lens luxation is an ophthalmic emergency
  • Lens subluxation and posterior luxation are often managed medically with miotics

Ophthalmology Rotation (20 decks)

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