Coco's Blood Pressure

After getting back from Comic Con, I found out that Coco's Blood Pressure is high (180) which caused Retina detachment. He was on Benezepril then I changed it to Norvasc after doing some research. He was pretty much blind for 2 weeks. The 3rd week, it seems like he can kind of see again. I'm not sure if he can see very clearly or not, but anything is better than being blind. His blood pressure is now 130 (Normal BP is 120). He will get another check up in 2 weeks. T_T