Final answer:
The cornea, lens, and retina are three essential components of the eye necessary for vision, with the retina being integral for converting light into neural signals.
Step-by-step explanation:
Besides the iris and the pupil, three critical parts of the eye that we rely on to see are the cornea, lens, and retina. The cornea acts as a clear protective layer on the front of the eye and allows light to enter. The lens adjusts its focus to ensure that images fall directly onto the retina, a layer of nervous tissue responsible for photo reception that converts light into neural signals for the brain to interpret.
The retina is located at the back of the eye and is key for detecting light and creating images that are sent to the brain via the optic nerve. The fovea, a small area on the retina, is especially important for sharp central vision due to its high density of photoreceptor cells. Hence, the correct answer to the question of which three other critical parts of the eye are relied on to see is Cornea, Lens, Retina (Option 1).