Update - I was seen yesterday by an eye doctor and a retinal consultant. Both agreed there were no new tears or detachment. The consultant suggested what I am seeing is the scar tissue from the freezing treatment which is just encroaching on my peripheral vision. She says this will be permanent, but it is a small price to pay to save the retina and I can live with that. She also said if there is any change at all, new shadow or this one getting bigger then do not hesitate and go straight back to the hospital. so I would echo what Lisa told me, if you have any doubts at all get yourself seen by an eye doctor. It is better to be safe than sorry. Hope this helps anyone else with these worries.
Lisa - Thanks for that, I rang the eye clinic immediately and got a very unhelpful nurse who said it could be the remains of the gas bubble, which I knew it was not. She said she would pass the message onto the surgeon and ring back. Guess what, she didn't, so this morning I have rung the hospital again and insisted I be seen as a matter of urgency. The person I spoke to this time agreed and I am just setting off to the clinic now. Will let you know how I go on.
It is normal to get surface irritation after the surgery and uncomfortability in bright lights. Also, you will not be able to stay focused because gas in the eye prevents light from focusing on the retina. But seeing a shadow is not normal If there is an appearance of new floaters, flashes of light or a shadow in your peripheral vision after a surgery, you should seek immediate advice from your eye doctor. These problems are some side effects of the vitrectomy surgery for retinal detachment that needs immediate action.