The fovea plays a crucial role in clear vision, refractive errors affect focus, and light entry through the cornea is vital for vision.
Objects are seen most clearly when their images are focused on the fovea because the fovea contains cones with high visual acuity. Nearsightedness and farsightedness result from refractive errors impacting image focus on the retina. Light entering the eye through the cornea is crucial for vision as it initiates the visual process.
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