CH 22. Corneal Deposits Flashcards

1
Q

Where are the cornea verticillata deposits located?

A

Within the epithelium.

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2
Q

Name conditions associated to cornea verticillata.

A
  1. Fabry’s disese
  2. Amiodarone
  3. Cloroquine
  4. Quinacrine
  5. Clorpromazine
  6. Indometacin
  7. Clofazimine
  8. Suramin
  9. Naproxen
  10. Tilorone
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3
Q

Name this finding

A

Cornea Verticillata

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4
Q

Name this finding

A

Striate Melanokeratosis

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5
Q

What is Striate Melanokeratosis

A

It is a normal finding in pigmented individuals or a response to trauma or inflamation in lighter pigmented individuals, it represents a migration of pigmented limbal stem cells.

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6
Q

Name the different epithelial iron lines

A
  1. Palpebral fissure: Hudson Stahli
  2. Head of a pterygium: Fleischer
  3. Head of a filtering bleb: Ferry
  4. Adjacent to salzmann or other focal elevations
  5. Anterior to sutures of keratoplasty: Mannis
  6. After keratorefractive surgery
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7
Q

Name this condition and describe where are the deposits located.

A

Spheroidal degeneration

Deposits are located withind the bowman’s layer and anterior corneal stroma.

In primary form, They can initially be located in nasal and temporal corneal, since there is a correlation with UV radiation exposure

In the secondary form, it is associated to an area of cronic inflamation and vascularization.

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8
Q

Name this finding and the situation it is associated to?

A

Adrenochrome deposits

It is associated to topical epinephrine use for glaucoma.

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9
Q

Name this condition

A

Subepithelial mucinous dystrophy

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10
Q

What gives the cornea with band keratopathy its “Zwiss Cheese appearance”

A

Calcium is deposited relatevely homogenously in the epithelium, bowman and anterior stroma, but small areas are spared where corneal nerves cross the bowman’s.

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11
Q

What is the most likely diagnosis for this image?

A

subepithelial quinolone deposits.

This deposits can accumulate after the use of topical cipro/norfloxacine on an <strong>open epithelial defect</strong>.

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12
Q

If this patient is a chronic contact lens user, what is the most likely diagnosis for this finding?

A

Mucin Balls

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13
Q

Given that the deposits presented in the image are intraepithelial, what is the most likely diagnosis?

A

Meesman Corneal Dystrophy

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14
Q

What is the most likely diagnosis, and what is the substance that is deposited?

A

Gelatinous Drop-Like Dystrophy

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15
Q

Inheritance and afected enzime in tyrosinemia II

A

AD

Tyrosine Aminotransferase

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16
Q

Given that the follonwing lesions doesnt stain with dyes, what is the most likely diagnosis?

A

Linear and branching epithelial and subepithelial deposits that resemble herpetic keratitis, but that does not stain whith dyes:

Must Rule out Tyrosinemia II

17
Q

Given that this globular lesions are located within under the epithelium, what is the most likely diagnosis?

A

Intraepithelial ointment Globules

ophthalmic ointment preparations can become entrapped in the epithelium after corneal abrasions have healed

18
Q

Can a corneal opacity due to blood staining clear?

A

Yes, but in severe staining it can last for years, and clearing starts in the periphery which means that the central cornea can remain damaged for a very long period.

19
Q

What is the most likely diagnosis:

A

Granular corneal dystrophy

20
Q

Given that this patient has a bilateral, chronic condition, what is the most likely diagnosis?

A

Corneal Macular Distrophy

21
Q

What is the most likely diagnosis given that this lesions are stromal, central, bilateral and asociated to corneal erosions?

A

Lattice Corneal Distrophy

22
Q

Where can the crystals be found in Bietti`s corneal dystrophy?

A

Cornea a Retina.

23
Q

Biettis corneal dystrophy presentation?

A

3rd decade, with nyctalopia, poor dark adaptation, peripheral visual field loss, and central visual acuity loss.

24
Q

What percentage of patients with Wilson´s Disease have a Copper Ring?

A

KF ring is present in 95% of these patients.

Because of its peripheral location (at the schwalbe´s line) it may be imposible to see it without gonioscopy at early stages

25
Q

Name this finding

A

Chysiasis

26
Q

Given that this is a chronic contact lens user, name this finding.

A

Motted Cyan Corneal Staining

27
Q

What is the correct term for corneal copper deposition.

A

Corneal Chalcosis.

28
Q

Given that this patient has these Farinata-like deposits in the posterior stroma, inmediately anterior to de descemet membrane. What is the diagnosis?

A

Predescemet´s corneal distrophy.

29
Q

This patien has been using an eyelash dye, she now consults for gleyish discoloration of the conjuntiva, cornea appears as shown. What is the diagnosis?

A

Corneal Argyrosis.