Term
| Which type of dye is popularly used to detect corneal abrasions? |
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Definition
| Fluorescein Sodium-intact cornea does not dye. |
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Term
| What test is used for detection of vascular abnormalities of the fundus? |
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Definition
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Term
| What is a common side effect of fluorescein injection? |
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Definition
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Term
| What is indocyanine green used for? |
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Definition
| It is used as a fluorescent dye for retinal and choroidal angiography |
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Term
| Why is indocyanine green better for choroidal angiography than fluorescein? |
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Definition
| Indocyanine green binds to albumin in the blood, thus less leaks out into the choroid. This makes it easier to see any defects. |
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Term
| Describe the action of Rose Bengal dye. |
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Definition
| Rose Bengal is a derivative of fluorescein that dyes dead or degenerated epithelial cells and mucus. |
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Term
| ________________dye should be used to diagnose pts suspected of having dry eye syndromes, herpetic keratitis, corneal abrasions and foreign bodies |
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Definition
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Term
| What is the advantage of Lissamine Green over Rose Bengal? |
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Definition
| Effect of the dye lasts longer. Also, lissamine green is easier to see in eyes that are inflamed or hemmorhagic |
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Term
| What is Visudyne therapy used to treat? |
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Definition
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Term
| Describe the mechanism of Visudyne therapy. |
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Definition
| Visudyne gets injected and forms a complex with LDL molecules. Verteporfin is the active ingredient and gets attracted to abnormal veins (since they grow so much faster, they take up greater amounts of Vertporfin). A cool red laser is shined into the eye, activating the Vertporfin and essentially burning up all the new, abnormal blood vessels. |
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