Question

Define the following terms- a) Persistence of vision b) Far point of the eye c) Near point of the eye d) Least distance of distinct vision

Answer 1

Answer:

a) persistence of vision - it is traditionally reffers to the optical illusion that occurs when visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye.

b)far point of eye - In visual perception, the far point is the farthest point at which an object can be placed (along the optical axis of the eye) for its image to be focused on the retina within the eye's accommodation. It is sometimes described as the farthest point from the eye at which images are clear.

c)near point of the eye - the point nearest the eye at which an object is clearly focused on the retina when accommodation of the eye is at a maximum.

d)least distance of distinct vision - In optometry, the least distance of distinct vision (LDDV) or the reference seeing distance (RSD) is the closest someone with "normal" vision (20/20 vision) can comfortably look at something. In other words, LDDV is the minimum comfortable distance between the naked human eye and a visible object.

Answer 2

Answer:

Explanation:

• persistence of vision - it is traditionally reffers to the optical illusion that occurs when visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye.

• far point of eye - In visual perception, the far point is the farthest point at which an object can be placed (along the optical axis of the eye) for its image to be focused on the retina within the eye's accommodation. It is sometimes described as the farthest point from the eye at which images are clear.

• near point of the eye - the point nearest the eye at which an object is clearly focused on the retina when accommodation of the eye is at a maximum.

• least distance of distinct vision - In optometry, the least distance of distinct vision (LDDV) or the reference seeing distance (RSD) is the closest someone with "normal" vision (20/20 vision) can comfortably look at something. In other words, LDDV is the minimum comfortable distance between the naked human eye and a visible object.