Sounds easy -
Meal Prep
You'll reasonably need aids to cook safely. Otherwise due to sight loss you'll be chopping your fingers off and scalding yourself. So pre-chopped veg count as an aid. I'd probably be arguing assistance actually on safety grounds (I rep PIP appeals at tribunal btw). So how can you tell meat is cooked? How can you cook meat? I just can't understand how you could do this safely with sight loss. AIDS should be easy though - bumpons for dials on the cooker count too.
2
Taking nutrition
Possibly arguable here. You have to get food off the plate into your mouth. Are you spilling food? How can you poke food with a fork and cut it with a knife?
3
Meds
That's an easy one with sight loss. You'll need some form of aid or assistance. Otherwise how do you know what meds you are taking and at what dose age?
4
Washing and bathing
I can't immediately think of anything obvious here, relevant to sight loss.
5
Toileting
As with 4?
6
Dressing
With sight loss defo assistance to chose appropriate clothing. Colours matching. Clothing on the correct way round. Etc
7
Communicating
No
8
Reading
You have points
9
Engaging
Unlikely as your work is customer facing (assume this is face to face)? You cannot see to read body language though, which could cause anxieties. It needs further exploration. Potentially you can't engage to an acceptable standard as you can't see the visual cues we rely on.
10
Budgeting
How do you see to recognise change? How do you see to recognise coins and notes? How do you see the process of something in a shop? I'd potentially be going for assistance with simple budgeting.
11
Planning and following journeys
How can you safely cross a road? How do you manage an unfamiliar journey? I'd be arguing 11d - at the least you'd need assistance. The overwhelming psychological distress isn't relevant here (unless you also suffer either anxiety and depression) it's the sight loss.
So there we have it. Enhanced rate daily living and standard mobility. MR it. And expect to be then going to appeal.
I would also highlight the inaccuracies of the HP report in the MR. It's something you'd need to do at appeal stage anyway (the tribunal would need to do).