|
|
 |
2010 Series : November 2, 2010
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
To see views enlarged, click on the individual pictures...
| A 63-year-old female presented for evaluation of blurred vision and complained of mild eye irritation for the past 20 to 30 years. On exam, her best corrected visual acuity was 20/25 in both eyes. The slit lamp exam is demonstrated above with similar findings reportedly seen on exam of her sister and daughter. |
| 1. |
The slit lamp images demonstrate involvement of which layer(s) of the cornea? |
|
| a. |
epithelium |
| b. |
stroma |
| c. |
endothelium |
| d. |
epithelium and stroma |
| e. |
(a), (b), and (c) |
|
| 2. |
The diagnosis is: |
|
| a. |
anterior basement membrane corneal dystrophy |
| b. |
Reis-Bücklers corneal dystrophy |
| c. |
Thiel-Behnke corneal dystrophy |
| d. |
granular corneal dystrophy |
| e. |
Meesmann’s corneal dystrophy |
|
| 3. |
A pathologic specimen would show: |
|
| a. |
a thickened basement membrane of the epithelium with extension into the epithelium |
| b. |
Bowman’s layer is disrupted and replaced by a fibrogranular material in a “sawtooth” configuration |
| c. |
curly fibers beneath the basal epithelium on electron microscopy |
| d. |
a fibrogranular material, “peculiar substance” in the epithelial cells on electron microscopy |
| e. |
none of the above |
|
| 4. |
Inheritance is: |
|
| a. |
autosomal dominant |
| b. |
autosomal recessive |
| c. |
x linked |
| d. |
all of the above |
| e. |
none of the above |
|
For answers to the above, click here on or after November 9, 2010.
|