Question:medium
The visual axis of the eye is best defined as the line from the:
The visual axis of the eye is best defined as the line from the:
Show Hint
It is the line of sight from what you look at to the point of sharpest retinal vision.
Updated On: Jun 24, 2026
- Center of cornea to retina
- Object to fovea
- Center of lens to cornea
- None
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Separate the two axes of the eye before answering. One is a purely geometric line through the centres of the refracting surfaces, and the other is the practical line along which we actually see.
Step 2: The line we see along is the visual axis. It connects the point of fixation, that is the object being viewed, to the fovea centralis, which is the retinal spot with the densest cone packing and the highest acuity.
Step 3: Because the eye rotates to drop the image of whatever it fixes upon exactly onto the fovea, the correct description among the choices is object to fovea, listed as option b.
Step 4: The cornea-to-retina and lens-to-cornea descriptions belong to the optical axis, which sits at a slight angle to the line of sight and is not what is asked. The visual axis is the object to fovea line.
\[\boxed{\text{Object to fovea}}\]
Step 2: The line we see along is the visual axis. It connects the point of fixation, that is the object being viewed, to the fovea centralis, which is the retinal spot with the densest cone packing and the highest acuity.
Step 3: Because the eye rotates to drop the image of whatever it fixes upon exactly onto the fovea, the correct description among the choices is object to fovea, listed as option b.
Step 4: The cornea-to-retina and lens-to-cornea descriptions belong to the optical axis, which sits at a slight angle to the line of sight and is not what is asked. The visual axis is the object to fovea line.
\[\boxed{\text{Object to fovea}}\]
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