What does 'far point' refer to in ocular physiology?

'Far point' refers to the point in space that is sharply focused on the retina when the eye is in a relaxed state and not accommodating for near vision. It denotes the furthest distance at which the eye can accurately focus light without strain or the need for additional accommodation. In a healthy eye with normal refractive power, this point would typically be at infinity, meaning that distant objects appear clear.

Understanding 'far point' is important in ocular physiology as it helps optometrists assess visual acuity and determine the presence of refractive errors. If someone cannot see clearly at the far point, it may indicate myopia (nearsightedness) or other vision problems that necessitate corrective lenses.

In contrast, the other options do not accurately describe 'far point.' The closest point of clear vision refers to the 'near point,' while the limit of lens accommodation relates to how much focusing power the eye can exert. The focal point of refracted light suggests a more general principle of optics rather than the specific physiological concept of the eye's distance vision capability.