There are a number of symptoms. These include:

• objects beginning to appear blurry or hazy
• night vision being poor
• sensitivity to light
• double vision
• contact lens/spectacle prescription needing changing often
• a visible lightening of the pupil

A full eye examination is the best way to determine whether someone has cataracts and to eliminate more urgent causes of some of these symptoms.

If you experience changes in vision you should visit your optician or GP.