There are different types of cataracts, depending on which part of the eye’s lens is affected: they can affect the centre, the sides, or the back of the lens. They can appear in just one eye or in both eyes, although they may not develop at the same time. Eventually, if they’re not treated, cataracts can lead to blindness.
Cataracts are caused by a build-up of protein in the eye, and usually develop because of old age. However they can also appear as a result of eye injuries or following eye surgery for other problems. They can also be present from birth: in many poorer countries, where healthcare and treatment may be less readily available, childhood cataracts can be a major cause of blindness.
What does the world look like when you have cataracts? Our simulator will give you an idea.
Try the simulatorIf you have cataracts, things can start to look dim, blurred or distorted, as if you’re looking through dirty glass. Your vision may seem cloudy, and it can also be hard to make out details or colours.
Try our vision simulator to see what the world looks like when you have cataracts.
Eleven years ago, Azimunnisa had a cataract operation to save her sight. It transformed her life: today she’s an advocate for eye health.
Read her storyWe also want to improve the quality of cataract surgery and increase the number of operations that are able to be performed.
To achieve this, we aim to improve community health programmes and increase the number of surgeons, nurses and community workers trained in eye health, as well as educating people about cataracts and explaining where to get treatment.
Since our work began in 1950, Sightsavers has helped to provide 8.3 million cataract operations in poorer countries, and trained more than 1,020 surgeons to perform the operations.
But we need your help to save the sight of people with cataracts: donating to our charitable cause can help to change lives.
An eye examination to screen someone for a range of eye conditions costs less than a cup of coffee, and could be the first step towards restoring their vision.
Students in Nigeria celebrated by taking part in a football match using sports equipment donated by one of Sightsavers’ corporate partners.
Arif’s life changed when he had two cataract operations at five years old. We've been following his journey since then, from completing his education to finding work as a driver.
In Nigeria, one community is home to a family in which nearly every member has experienced visual impairment. Amina and six of her seven children have had eye surgery to treat cataracts, ensuring they all have the chance to thrive.