Also known as farsightedness or longsightedness. Hyperopia occurs when the eyeball is too short from front to back, or the eye's focusing mechanism is too weak, causing light rays to be focused behind, rather than on, the retina. People with hyperopia have difficulty seeing objects close up. This refractive abnormality requires a plus (positive or convex) lens for correction. Hyperopia is significantly more difficult to correct with refractive surgery. Detailed Hyperopia (Farsighted/Longsighted) Lasik Vision Correction Information