Complex sentence: However, many of these areas are very poorly developed With some physical improvements such as increasing distances between cornea and retina, increase pupil dimensions, and strengthening cones and rods, an infant's visual ability improves drastically.
Split into simpler sentences: However, many of these areas are very poorly developed. With physical improvements such as increasing distances between cornea and retina, increase pupil dimensions, and strengthening cones and rods, an infant's visual ability improves drastically.