She underwent an operation to correct the condition in January 2006, aged two, but it was unsuccessful.
In late 2013, aged, ten, she underwent further treatment and her vision was corrected.
Speaking to the Sunday Express in 2015, Sophie said: “Premature babies can often have squints because the eyes are the last thing in the baby package to really be finalised.
“Her squint was quite profound when she was tiny and it takes time to correct it.
“You’ve got to make sure one eye doesn’t become more dominant than the other but she’s fine now – her eyesight is perfect.”