Cataracts usually develop slowly and painlessly. In some cases, cataracts can develop in an individual who has glaucoma, which can be a painful condition. Physical changes in the eye are generally not apparent, but cataracts have many other indicators. These include:

• Cloudy, blurry, fuzzy, filmy, or dull vision
  
  
• Increased sensitivity to light and glare
  
  
• Poor night vision
  
  
• Double vision or multiple images in one eye
  
  
• Seeing halos around lights
  
  
• Fading perception of colors
  
  
• Difficulty distinguishing blues from purples
  
  
• Eyestrain
  
  
• Needing brighter lights for reading, sewing and other close activities
  
  
• Needing frequent changes in prescription glasses or contact lenses
  
  
• Increased blinking