An Ophthalmologist is a doc specialising in eyes. Opticians [generally primary care] will test your eyes and refer to an ophthalmologist [secondary care ie hospital]if some kind of pathology is suspected for diagnosis and treatment.
If it’s your first appointment you’ll get your eye pressures checked and drops put in your eyes to dilate your pupils for the Ophthalmologist to look inside, you’ll have a field test to ascertain the extent of the loss/ tunnnel vision. You might get a CT and/or MRI scan to check any structures behind the eye and to check the brain.
No pins in the eyes just some drops, that may sting and some very bright lights