Fluoroscopy Visual Physiology
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| What is the difference between rod and cone vision? What type of vision is each? Which visual acuity is greater? | show 🗑
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| show | 0.5 mA to 5.0 mA
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| show | A dynamic study. Viewing internal structures in motion. To distinguish between adjacent structures.
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| The fluoroscope was invented by whom and when? | show 🗑
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| What is photopic vision? What light receptors are used for photopic vision? Why is this? | show 🗑
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| show | Cones are concentrated in the center of the retina. Fovea Centralis.
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| What is visual acuity? What light receptors have high visual acuity? How much greater is the acuity in comparison to the other light receptor? | show 🗑
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| show | Night vision or dim vision. The rods. Rods are concentrated in the periphery of the retina.
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| show | Because the rods are concentrated in the periphery of the retina and the rods are used for viewing dim objects.
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| Why is image brightness intensified for fluoroscopy? | show 🗑
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| show | 0.2 seconds. The visual system will reset itself and reacquire the information for the next 0.2 seconds.
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| show | Cornea is the protective covering. The Iris in between the Cornea & Lens. Iris controls the amount of light admitted to the eye onto the Lens. Lens focuses light onto the Retina.
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| What type of light do the Rods and Cones detect? Where are the Rods and Cones concentrated and how many? | show 🗑
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| show | Cone vision.
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| show | Excessive light in the room decreases the ability of the light to resolve detail on the screen.
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| show | The technical factors may be increased to make up for the lack of ability to resolve detail due to bright lights. The patient may receive an increased radiation dose.
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Created by:
jamestkelley
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