How do you decide between a combined phacovitrectomy approach versus a staged procedure for patients with a retinal detachment and dense cataract?  

A primary buckle might be a consideration here to avoid the issue of the cataract all together. But if planning to add a buckle (with vitrectomy) during these cases, it is impossible to preoperatively perform lens measurements (i.e., axial length), which would be a relative contraindication to perfo...