Behind the eye’s pupil is a clear lens focusing light rays onto the retina, sending the brain an image. When a cataract develops, usually slowly over years, the lens becomes cloudy, preventing light passing through, causing a gradual blurring of vision, eventually not correctable with glasses. Developing a cataract can also cause glare, difficulty with night-time driving and multiple images in one eye, which can affect the visual quality in both eyes.
Most cataracts are age related, developing after the age of 40, although it’s not entirely clear why this happens. Some conditions increase the risk of cataracts, including a family
