This is an operation to straighten the partition between the two nostrils (the septum). In many people this is bent and this causes obstruction to breathing through the nose. This has 2 effects; one is that the airflow though the nose becomes more turbulent and the second is it makes it more likely that you will have to breathe through your mouth. This can lead to vibrations in the nose and throat and therefore cause a snoring noise. The operation is done through the nostrils so there is no scarring on the outside. The bent bits are either removed or put into the correct position in the middle of the nose. The skin covering is then stitched back into place with dissolving stitches. The operation is not usually very painful afterwards. The possible complications of the procedure are bleeding, change in shape of the nose and septal perforation (a hole in the partition). The success rate is very good for relieving blocked nose 90+% but not so good for relieving snoring, 50-60%. Having the septum straightened may make it easier to use other snoring treatments such as a Jaw positioning device or CPAP. This means that even though the operation may not cure the problem it may still be worthwhile.