The inspirational model-turned-charity campaigner uploaded a picture to Twitter on Wednesday (21 May) showing herself sporting an eye patch and cuddling her tiny daughter.
Katie told fans: "I had a big operation at Centre For Sight today. No pain relief needed. My little lady takes all the pain away just by looking at me."
Katie has undergone a multitude of operations since suffering horrendous injuries in a 2008 acid attack. Her injuries including losing the sight in her left eye.
At the time, she said: "Of all my injuries, it's the damage to my left eye that has the most impact. The hardest part is not being able to see anything on one side. In crowded places it leaves me feeling scared and vulnerable."
Following stem cell treatment, the vision in her left eye was restored and the 30-year-old has said of Centre For Sight: "The improvement in my quality of the life the treatment had given me is priceless."
Katie became a first-time mother in March when she gave birth to daughter Belle Elizabeth.
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