Final answer:
The blind spot is the part of the retina without binocular correspondence because it corresponds to where the optic nerve exits and lacks photoreceptor cells.
Step-by-step explanation:
The point in the retina that lacks binocular correspondence is the blind spot. This is because the blind spot corresponds to the location on the retina where the optic nerve exits, which does not contain any photoreceptor cells. Thus, it does not capture any visual information and has no counterpart in the visual field of the other eye. In contrast, the fovea, which is the region of the retina with the highest visual acuity, does have a corresponding area in the visual field of the other eye. This permits the fusion of images from both eyes, contributing to depth perception.
It is important to note that while the peripheral retina has lower visual acuity compared to the fovea, it still contributes to the binocular vision, as it has photoreceptors that correspond to both eyes' visual fields, unlike the blind spot.