Term
| Why do you store the bottle of gonioscopic fluid in its container upside down and use proper lens filling technique? |
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Definition
| To reduce the number of bubbles formed |
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Term
| What effect does excess light have on a gonioscopy readings? |
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Definition
| Minimal amounts of light constrict the pupil leading to a wider angle appearance than would occur in dark conditions. |
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Term
| What type of iris is associated with hyperopia and has an increased risk of developing angle closure glaucoma? |
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Definition
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Term
| What shape of iris is associated with myopia and pigment dispersion syndrome? |
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Definition
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Term
| What color is the ciliary body in gonioscopy and where is it? |
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Definition
| Light gray to brown band just anterior to teh root of the iris. |
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Term
| Do myopes or hyperopes have a wider ciliary body? |
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Definition
| The ciliary body may be wide in myopes and narrow or absent in hyperopes. |
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Term
| How does the scleral spur appear? |
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Definition
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Term
| What color does the trabecular meshwork appear to be? |
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Definition
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Term
What is the most anterior structure of the angle and how does it appear? |
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Definition
| Schwalbe's line and it appears as a refractile white line. |
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Term
| Where is the angle usually largest in gonioscopy? |
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Definition
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Term
| Where is the pigment densest? |
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Definition
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Term
| Where is the angle narrowest in gonioscopy? |
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Definition
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Term
| What is one possible reason for bubbles in the gonioscopic fluid? |
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Definition
| to little pressure is being placed on the eye |
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Term
| What are the advantages of four mirrored gonioscopy compared to three mirrored gonioscopy? |
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Definition
1) It is performed quickly
2) Requires no rotation of the lens
3) Allows for rapid comparison between the two eyes
4) requires no gonioscopic fluid
5) is smaller in size and may be better suited for patients with small palpebral apertures, and may be easier for patients to tolerate
6) less traumatic to the globe, may be better in cases of ocular trauma or to assess acute angle closure glaucoma
7) |
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Term
| What are the disadvantages to gonioscopy? |
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Definition
| maintaining proper positioning of the lens can be difficult to master because no suction is created between the lens and the cornea |
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Term
| In what type of gonioscopy can you distinguish between synechial and appositional narrow angle glaucoma? |
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Definition
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Term
| How do you clear the cornea to allow for angle evaluation if a corneal edema develops secondary to an acute intraocular pressure elevation? |
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Definition
| Instill 1 to 2 drops of topical opthalmic glycerin solution |
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