**15. CyPass**

The Cypass is a polyamide implant 6mm long with a 300 µm diameter that is inserted ab interno in the suprachoroidal space with a specially designed inserter. It is inserted through the main incision of cataract surgery following clear cornea phacoemulsification [112]. Lanchulev et al reported IOP reduction from 22.9 mmHg to 16.2 mmHg after 6 months in eyes that underwent phacoemulsification and Cypass insertion [113]. Craven et al reported that the most common adverse effects are: hyphaema, persistent inflammation, branch retinal vein occlusion and exacerbation of diabetic macular oedema [114].
