Correcting vision defects

• What is myopia?

  Being short sighted , the light rays focus too early before the retina
• What is hyperopia?

  Being long sighted, light rays focus too late beyond the retina
• What are three treatments besides glasses for fixing eye defects?

  Contact lenses, laser eye surgery and replacement lens surgery
• What is replacement lens surgery?

  The natural lens of the eye is removed and replaced with an artificial lens