QuestionAugust 27, 2025

What is the purpose of the green filter on a direct ophthalmoscope? To calculate the cup to disc ratio To allow visualization through a cataract To measure the pressure in the eye To better visualize retinal blood vessels To allow visualization of cotton wool spots

What is the purpose of the green filter on a direct ophthalmoscope? To calculate the cup to disc ratio To allow visualization through a cataract To measure the pressure in the eye To better visualize retinal blood vessels To allow visualization of cotton wool spots
What is the purpose of the green filter on a direct ophthalmoscope?
To calculate the cup to disc ratio
To allow visualization through a cataract
To measure the pressure in the eye
To better visualize retinal blood vessels
To allow visualization of cotton wool spots

Solution
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Answer

To better visualize retinal blood vessels Explanation 1. Identify the function of a green filter The green filter, also known as a red-free filter, is used in ophthalmoscopy to enhance contrast. 2. Determine what the green filter enhances It enhances the visibility of structures that are red or contain blood, such as retinal blood vessels.

Explanation

1. Identify the function of a green filter<br /> The green filter, also known as a red-free filter, is used in ophthalmoscopy to enhance contrast.<br /><br />2. Determine what the green filter enhances<br /> It enhances the visibility of structures that are red or contain blood, such as retinal blood vessels.
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