chatterbox - blepharitis can come and go, it can cause dry eyes, but then so can lots of other things. Yes, lubricating drops for dry eyes are the first stage of treatment, whilst they don't cure the underlying condition, they do make your eyes feel more comfortable.
They can also provide more lubrication between the eyelids and the eye, so that the eyelid doesn't rub on the eye when you blink.
Grave's Disease or thyroid eye disease (TED) is less common in those who have an underachieve thyroid, but around 10% of people who have an underactive thyroid also have thyroid eye disease.
Eye puffiness and dryness are two of the signs, but they are signs of a lot of other things as well. They can actually also be a sign that your medication dosage needs adjusting.
Optometrists only refer eye conditions if they are unable to manage them in practice. Our profession is also becoming a lot more specialised and many of us have higher qualifications in particular areas. For example, my areas of specialisation are the front of the eye and binocular vision. So, I would not refer someone who had an eye infection, but I would someone who had high eye pressure as glaucoma is not one of my areas of speciality and I wouldn't feel comfortable monitoring them myself.
If you do have mild thyroid eye disease therefore (I can't say for sure if you have or not as I haven't seen you personally) and you don't have any double vision/severe lid problems and the Optician is confident that they can manage your condition with dry eye drops, then they are right, there is no point you being referred. You'll most likely sit in the clinic for ages and then come out with a bottle of dry eye drops that will be less effective than the ones that your purchased from the optometrist.
Having said that though, if you would like to be referred then the Optician/Optometrist will do so. You just need them to write to your GP and they will refer you to the hospital eye service. You can either call them to write the referral or wait until they see you in a few weeks to look at how the dryness is progressing.
Either way, please, please don't worry. If it was serious the Optician would have referred you without hesitation.
Cornelius - can I remind you, you need to be aware of your legal professional duty with regards to inter-profession relations.