Questions and Answers
What is binocular single vision?
The state of simultaneous vision achieved by the coordinated use of both eyes
How is binocular single vision classified as 'normal'?
When it is bifoveal and there is no manifest deviation
What is anomalous binocular single vision?
When the images of the fixated object are projected from the fovea of one eye and an extrafoveal area of the other eye
What does binocular vision imply?
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When is a manifest deviation present in anomalous binocular single vision?
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Study Notes
Binocular Single Vision
- Binocular single vision is the ability to perceive a single, three-dimensional image from the two separate images formed by each eye.
- It is a result of the brain's ability to fuse the images from each eye, creating a unified perception of the visual world.
Classification of Binocular Single Vision
- Binocular single vision is classified as 'normal' when the brain is able to fuse the images from each eye correctly, resulting in a single, clear image.
Anomalous Binocular Single Vision
- Anomalous binocular single vision occurs when the brain's ability to fuse images is impaired, resulting in an abnormal single image.
- It is characterized by a deviation in the normal alignment of the eyes, leading to abnormal visual processing.
Implications of Binocular Vision
- Binocular vision implies the ability to perceive depth and distance, allowing for accurate judgement of spatial relationships.
Manifest Deviation in Anomalous Binocular Single Vision
- A manifest deviation is present in anomalous binocular single vision when the deviation in eye alignment is significant enough to cause noticeable visual disturbances.
- This deviation can be detected through visual assessments and can have implications for daily life and visual function.
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