Accommodation

• What is the process of accommodation in the eye?

  It changes the lens's refractive power
• Why do glasses help with accommodation issues?

  They provide additional refracting power
• Which parts of the eye are important for accommodation?

  Cornea and lens
• What role do the ciliary muscles play in accommodation?

  They control the shape of the lens
• What is the fovea in the eye?

  It's the spot where light is focused
• How does the cornea contribute to vision?

  It refracts light consistently
• What happens to light rays from distant objects?

  They are almost parallel when hitting the eye
• How does the lens adjust for nearby objects?

  It becomes short and fat to refract more
• What happens to the ciliary muscle when focusing on nearby objects?

  It contracts and moves inward
• What do the suspensory ligaments do during accommodation?

  They slacken when the ciliary muscle contracts
• What is the difference between the ciliary muscle and suspensory ligaments?

  Ciliary muscle can contract; ligaments cannot
• What is long-sightedness?

  Inability to focus on nearby objects
• How do convex lenses help long-sighted individuals?

  They provide extra refracting power
• What is short-sightedness?

  Inability to focus on distant objects
• How do concave lenses assist short-sighted individuals?

  They counteract over-refraction of light
• What is the medical term for long-sightedness?

  Hyperopia
• What is the medical term for short-sightedness?

  Myopia
• What is the role of the ciliary muscle in distant vision?

  It relaxes to stretch the lens
• How does the lens change shape for distant objects?

  It stretches out to reduce curvature