What are cataracts?

Cataracts occur when the natural lens in your eye becomes cloudy or loses its transparency, from the introduction of natural proteins that build up over time. Your vision becomes blurry, hazy or less colourful with a cataract. A common indication of when a cataract has developed is when your vision isn’t as clear or bright as it used to be.


  • Cataracts are very common; they mostly develop naturally with age.
  • Globally, cataracts are one of the leading causes of vision impairment, with over 94 million people affected.1
  • Cataract surgery is a common, safe, and effective procedure to restore your vision.2
  • There are more than 28 million cataract surgeries performed worldwide each year.3


Vision with healthy eyes

Vision with cataracts

How are cataracts treated?

The only way to remove a cataract is through surgery. The eye remains in its natural position and the cataract is removed via a surgical method called phacoemulsification and replaced with a tiny, acrylic intraocular lens (IOL). 


Although the diagnosis of a cataract may not be welcome news, it is an opportunity to reduce the need for glasses and permanently improve your vision. 


Innovation in recent years within eye care means there are many options available. Find out more about the variety of IOL options available. 

Speak to your eye surgeon to discuss the best IOL options available for you.

Already had your cataracts treated?

Cataract surgery is safe and effective but if you have a problem with your sight or need some adjustment to your vision after cataract surgery (called a refractive error) then a supplementary intraocular lens (IOL) might be an option for you. Supplementary IOLs are placed in front of the original lens that was implanted during your cataract surgery.


Rayner’s Sulcoflex IOLs are available with one focal point to help correct a problem with your vision, or with industry-leading optical technologies designed to enhance your near and intermediate vision if you still need glasses for close-up activities like reading a menu or using your mobile phone – Sulcoflex Trifocal can rid the need to wear glasses for most everyday activities at any distance.


A trusted British manufacturer of IOLs for over 70 years, Rayner was the first company in the world to offer this advanced optical technology.


Find out more about our Sulcoflex lens options.


"The freedom of not wearing glasses and having new lenses has been extraordinary and wonderful."

Susan R, Sulcoflex Trifocal patient (UK)