The decision to refer a person with a cataract for surgery should be based on a discussion that includes how the cataract affects their vision and quality of life, whether one or both eyes are affected, and what surgery involves, including risks and benefits NICE CKS.
Referral should not be restricted on the basis of visual acuity alone, but local arrangements may specify certain visual acuity thresholds, such as a monocular visual acuity of 6/18 or worse, or binocular visual acuity of 6/12 or worse for non-drivers, or 6/9 or worse for drivers, especially in some CCG protocols NICE CKS.
Consideration of the impact on quality of life and specific symptoms like glare or double vision is also important, even if visual acuity is relatively unaffected NICE CKS.
In addition, advice on fitness to drive should be provided, with specific standards for visual acuity and the need to notify the DVLA if these are not met NICE CKS.