Concerned about medical for HGV licence renewal

I just had my medical.via a company that I won’t name.
The do driver training cpc courses and also an agency as well.
My medical was pointless.put a blood pressure thing on my arm asked me few questions.
Read a line on an eye chart.
Which looked like an a4 print out done on a pc.
That was it took about 5 mins.
1st medical ever had but was expecting it to be a bit more indepth