Examlex
When economists refer to "the invisible hand," what do they mean?
Blind Spot
The blind spot is an area on the retina without photoreceptors where the optic nerve exits the eye, resulting in a gap in the visual field.
Astigmatism
A common vision condition causing blurred vision due to an irregular curvature of the cornea or the lens inside the eye.
Near Point
The closest distance at which an object can be clearly focused on by the eye.
Accommodation
The ability of the eye to change its focus from distant to near objects, involving the lens changing shape.
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