Disorder of cornea & iris

Question 1

Bacterial keratitis- Eti

Answer 1

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

Question 2

Bacterial keratitis- Sx

Answer 2

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

Question 3

Bacterial keratitis- Dx

Answer 3

Gram stain

Question 4

Bacterial keratitis- Tx

Answer 4

• Fluoroquinolone eye drops- levofloxacin, ofloxacin

Question 5

Herpes simplex keratitis- Eti

Answer 5

• Colonization of trigeminal ganglion

- Exacerbated by fever, sunlight, immunodeficiency

Question 6

Herpes simplex keratitis- Sx

Answer 6

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

Question 7

Herpes simplex keratitis- Dx

Answer 7

• Flourescein & blue light examination

Question 8

Herpes simplex keratitis- Tx

Answer 8

• Debridement, topical antivirals

Question 9

Herpes zoster opthalmicus- Eti

Answer 9

• Trigeminal nerve

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Question 10

Herpes zoster opthalmicus- Sx

Answer 10

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

Question 11

Herpes zoster opthalmicus- Tx

Answer 11

Acyclovir- oral

Question 12

Fungal keratitis- Eti

Answer 12

• Corneal injury involving plan or agricultural setting

- Indolent

Question 13

Fungal keratitis- Sx

Answer 13

Multiple stromal abscesses

• Little epithelial loss
• Intraocular infection common

Question 14

Fungal keratitis- Dx

Answer 14

Fungi culture media

Question 15

Fungal keratitis- Tx

Answer 15

Natamycin, amphotericin and voriconazole

Question 16

Acanthamoeba keratitis- Eti

Answer 16

• Contact lense wearers

- Amoeba in soil & fresh water habit

Question 17

Acanthamoeba keratitis- Sx

Answer 17

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

Question 18

Acanthamoeba keratitis- Dx

Answer 18

• Confocal microscopy

- Culture

Question 19

Acanthamoeba keratitis- Tx

Answer 19

Topical biguanides

Question 20

Ultraviolet keratitis- Eti

Answer 20

• Use of sunlamp or exposure to welding, skiing

- UV burn of cornea

Question 21

Ultraviolet keratitis- Sx

Answer 21

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

Question 22

Ultraviolet keratitis- Dx

Answer 22

• Slit lamp & flourescein

- Bilateral punctuate staining of both corneas

Question 23

Ultraviolet keratitis- Tx

Answer 23

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