Corneal Disorders Flashcards Preview

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Flashcards in Corneal Disorders Deck (25):
1

Red Flags

Decreased Visual Acuity
Severe Deep Pain
Ciliary flush
Photophobia (in addition to these)
Severe foreign body sensation
corneal opacity
Fixed pupil
Severe HA w/ nea

2

Subconjunctival Hemorrhage

Patients are generally asymptomatic.
May occur spontaneously or with coughing, sneezing, straining or vomiting.

3

Subconjunctival Hemorrhage Tx

No specific therapy is indicated.
Blood will typically resorb in 1-2 weeks
May want to work up hematologic or coagulation abnormality

4

Keratoconus

A degenerative disorder of the eye where the cornea assume a conical shape instead of spherical.

5

Keratoconus S/S

- Substantial vision distortion
- Photophobia
- Typically diagnosed in adolescent years
- If bilateral, may have difficulty with daily activities

6

Keratoconus Tx

Contacts, surgery

7

Corneal Abrasion

- Term most often applied to any defect in the corneal surface epithelium.
- AKA corneal epithelial defect

8

Recurrent (Spontaneous) foreign body

- No immediate antecedent injury or foreign body
- Basement membrane disturbance resulting in recurrent breakdowns of the epithelium.

9

Pain + Foreign Body Sensation = _________?

Presumed corneal abrasion

10

Regardless of intervention, corneal abrasions usually heal within ____ to ___ hrs

24-72 hours. This is because the eye is the most vascular part of the body

11

Should I use an eye patch for a corneal abrasion?!

No. Don't be dumb. dumbface.

12

Why is Abx ointment better than drops for corneal abrasion?

Because it lubricates as well.

13

What are 2 good options for topical Abx for corneal abrasion from fireign body/trauma w/o contacts?

Erythromycin and Sulfacetamide

14

What is the best Abx for contact lens related abrasion?

Ciproflaxacin for the suspected pseudomonas infxn.

15

Are topical anesthetics a good option for pain management in corneal abrasions?

NO, they inhibit corneal epithelial healing

16

Infectious pseudomonas keratitis can result in corneal _____ and ______ within _____ hrs.

Melting and perforation within 24 hours. Do NOT patch

17

How often should corneal abrasion patients follow up?

Every 24 hours until abrasion is fully healed.

18

Foreign Body Removal

1st: Irrigation
2nd: Try the swab
3rd: Refer to someone who knows what the hell they are doing
In the meantime: Treat w/ topical abx (erythro)

19

Corneal ulcers are most commonly due to ______.

Infection
- Bacteria
- Virus
- Fungi
- Severe allergic eye disease

20

Karatitis

Inflammation of the cornea

21

Keratitis S/S

Photophobia
Tearing
Reduced vision
Red eye
Ciliary flush
Purulent or watery discharge

22

Bacterial Keratitis

Usually an aggressive course.
Cornea is hazy w/ central ulcer.
May be admitted for constant tx
Flouroquinolones are preferred

23

Herpes Simplex Keratitis

- Dendritic, branching ulcer is most characteristic
- Refer these patients

24

Fungal Keratitis

Tend to occur after injury from plant material.
More common in contact lens wearers
Multiple stromal abscesses

25

Acanthamoeba Keratitis

- Caused by an ameba.
- One of the leading causes of suppurative keratitis in contact lens wearers (soft lenses)
- Diagnoses often missed by PCP
- Refer immediately to Optho