Check if the IOL implantation is done normally. Pressure in eye, I only know about Glaucoma, is that the case with you? I think you should follow up with your same surgeon and get the things sorted.
you have traumatic glaucoma.It can be controlled with medication.If not, then surgery is the only option.
For more details visit
http://sites.google.com/site/eyediseases/Home/glaucoma