Retinal bleeds occur in around 85% of SBS cases; the type of retinal bleeds are often believed to be particularly characteristic of this condition, making the finding useful in establishing the diagnosis, although this finding is based on circular reasoning and other studies have found that patterns of retinal bleeding cannot be used to make diagnoses. While there are many other causes of retinal bleeds besides SBS, there are usually additional findings (eyes or systemic) which make the alternative diagnoses apparent.