Daughters eyes

My 29 yr old daughter went for an eye test yesterday the optician has referred her to hospital he says the back of her eye she be slightly curved and raised. But hers is in a dip.

Any ideas as to what it could be

I have a Chrodial Hemanagomia which is a tumour at the back of your eye.

 

The opticion said its nothing to worry about and hes seen quite a few of this condition but it doesnt stop you worrying