The eye produces a real image on the retina by adjusting its focal length and power in a process called accommodation Nearsightedness, or myopia, is the inability to see distant objects and is corrected with a diverging lens to reduce power

Farsightedness, or hyperopia, is the inability to see close objects and is corrected with a converging lens to increase power Image formation by the eye is adequately described by the thin lens equations: P = 1 d o + 1 d i and h i h o = - d i d o = m .

myopia — a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina. nearsightedness — another term for myopia, a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina. accommodation — the ability of the eye to adjust its focal length is known as accommodation. farsightedness — another term for hyperopia, the condition of an eye where incoming rays of light reach the retina before they converge into a focused image.