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Flashcards in Disorder of cornea & iris Deck (23)
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1

Bacterial keratitis- Eti

- Contact lens wear, trauma & surgery
- Pseduomona aeruginosa, moraxella
- Ophthal emergency

2

Bacterial keratitis- Sx

- Hazy cornea with central access and adjacent tremble abscess
- Assoc with hypopyon

3

Bacterial keratitis- Dx

Gram stain

4

Bacterial keratitis- Tx

- Fluoroquinolone eye drops- levofloxacin, ofloxacin

5

Herpes simplex keratitis- Eti

- Colonization of trigeminal ganglion
- Exacerbated by fever, sunlight, immunodeficiency

6

Herpes simplex keratitis- Sx

- Dendritic, branching ulcer
- Herpes sores around eyelids
- Corneal opacity with recurrence

7

Herpes simplex keratitis- Dx

- Flourescein & blue light examination

8

Herpes simplex keratitis- Tx

- Debridement, topical antivirals

9

Herpes zoster opthalmicus- Eti

- Trigeminal nerve
-

10

Herpes zoster opthalmicus- Sx

- Malaise, fever, HA and periorbital burning
- Vesicular, pustular & crusting rash
- Conjunctivitis, keratitis, uveitis

11

Herpes zoster opthalmicus- Tx

Acyclovir- oral

12

Fungal keratitis- Eti

- Corneal injury involving plan or agricultural setting
- Indolent

13

Fungal keratitis- Sx

Multiple stromal abscesses
- Little epithelial loss
- Intraocular infection common

14

Fungal keratitis- Dx

Fungi culture media

15

Fungal keratitis- Tx

Natamycin, amphotericin and voriconazole

16

Acanthamoeba keratitis- Eti

- Contact lense wearers
- Amoeba in soil & fresh water habit

17

Acanthamoeba keratitis- Sx

- Severe pain
- Perineural & ring infiltrates in corneal stroma
- Risk of encysting

18

Acanthamoeba keratitis- Dx

- Confocal microscopy
- Culture

19

Acanthamoeba keratitis- Tx

Topical biguanides

20

Ultraviolet keratitis- Eti

- Use of sunlamp or exposure to welding, skiing
- UV burn of cornea

21

Ultraviolet keratitis- Sx

Agonizing pain & severe photophobia 6-12 hrs following exposure to light

22

Ultraviolet keratitis- Dx

- Slit lamp & flourescein
- Bilateral punctuate staining of both corneas

23

Ultraviolet keratitis- Tx

- Binocular patching
- Cyclopentolate drops
- Resoves in 24-48 hrs