The photograph below depicts: | OphthalmologyWeb: The Ultimate Online Resource for Ophthalmologists

Tuesday, September 22, 2009

The photograph below depicts:

A punctum occluded by an intracanalicular collagen plug
A punctum occluded by a silicone punctal plug
A punctum occluded by punctal cautery
A punctum occluded by an extruding Jones tube

Correct Answer: A punctum occluded by a silicone punctal plug

The picture depicts a punctum occluded by a permanent silicone plug with a collarette to keep it in place at the punctal opening.

Muller's muscle is responsible for approximately 5 mm of eyelid elevation. (True/False)
1. True
2. False
check the answer
The cornea endothelium is derived from which structure?
1. Neural crest
2. Endoderm
3. Mesoderm
4. Ectoderm
check the answer
All of the following drugs are FDA approved for the treatment of minimally classic subfoveal CNV in patients with neovascular AMD with evidence of recent disease progression (loss of vision, growth of CNV on FA, new macular hemorrhage) except for which one?
1. Pegaptanib sodium (Macugen)
2. Verteporfin (Visudyne PDT)
3. Ranibizumab (Lucentis)
4. None of the above
5. All of the above
check the answer
The first day after trabeculectomy, a patient with primary open angle glaucoma presents with a bleb that is almost flat, a very shallow anterior chamber, and vision decreased from 20/30 to 20/100. The IOP is 1 to 2 mmHg. What is the most likely cause?
1. Aqueous misdirection (malignant glaucoma)
2. Pupillary block
3. Early failure of the bleb with episcleral fibrosis
4. Ciliary body shut down
5. Bleb leak
check the answer
Which of the following is false regarding the development of diabetic retinopathy?
1. The earliest vascular abnormality is the loss of retinal capillary intramural pericytes.
2. Microaneurysm formation is the earliest clinical sign of diabetic retinopathy.
3. Microaneurysm formation typically occurs on the arteriolar side of the retinal vasculature.
4. Basement membrane thickening is
... check the answer

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