Cataract Surgery Vision Outcomes
A widely accepted measure of quality of surgery is the proportion of eyes able to achieve a certain standard of vision (with glasses as required). Two major standards are used;
- The proportion of eyes that can see up to the 6/12 (20/40) standard. This level closely equates to the nominal standard of visual acuity that is required to pass the UK driving regulations for ordinary vehicles.
- The second measure is the proportion of eyes that can reach up to 6/6 (20/20) . This level of vision on a chart is regarded as “normal” level vision. Chart testing is normally carried out at a real or virtual distance of 6m in the UK. Click the tab below to see a more detailed explanation of vision and it measurement.
|Mr Rehman 2007-2008 Independent Practice||Published Report 4|
|6/12 or better||96||95|
|6/6 or better||67||51|
4. Narendran N et al. The cataract national dataset… Eye 2009,23:31-37.