Final answer:
A person's 7/10 visual acuity signifies that they can see at a closer distance what a person with normal acuity sees at a standard distance; visual acuity measures this capability. A young woman with a 10% ability to accommodate can increase her eye's lens power beyond the usual range, allowing for a closer clear focus point than the average 8% accommodation.
Step-by-step explanation:
When a person has 7/10 visual acuity, it implies that their vision can correctly identify an image at a distance where the average person with normal acuity can see it at 7/10ths of that distance. For example, if the average person can see an object clearly at 10 meters, a person with 7/10 visual acuity would need to be at 7 meters to see it clearly. The concept of visual acuity can be related to the question about the closest object a young woman with a 10.0% accommodation ability can see, which delves into the ability of the eye to adjust its lens power to maintain a clear image on the retina for different distances.
The normal power range for an eye is between 50.0 diopters (D) to 54.0 D, which is an 8% increase. Given this woman can accommodate 10.0%, her eyes can increase power beyond the standard 54.0 D for close focus, enabling her to see close objects more clearly than the standard accommodative range. This example illustrates how age, the stiffness of the lens, and accommodative ability can affect visual sharpness and the ability to focus on objects at varying distances.