| | Conditions & Treatments | Eye & Vision Disorders What does the eye muscles do when seeing up close? The ciliary muscles contract and the suspensory ligaments relax, causing the lens to become more rounded, increasing its curvature. Eye & Vision Disorders - Related Articles List of Providers For EyeMed Signs of Blindness in Babies How Retinoids Help With Aging How to Use Reading Glasses How to Eat to Improve Eyesight How to Reduce Bloodspots in the White of the Eye What should you do if your eyes are yellow and tired?