A doctor's new glasses could have contributed to more than 100 patients being left with eye damage, a report has found.
The 103 patients suffered lens damage after being given intravitreal injections by the locum at New Cross Hospital in Wolverhampton.
The consultant's new glasses caused a change in injection technique.
The NHS trust said procedures had been amended to prevent it happening again.
Artist Margaret Kitching was among those who suffered harm after being given injections to treat a rare eye condition.
During the treatment the ophthalmologist pierced the lens of her left eye, she was told.
Mrs Kitching, from Wolverhampton, said: "My eyesight is an important tool of my job, and I don't know whether the long-term impact of this treatment will mean I can no longer produce my art.
"It's been an awful experience and has caused me - and I'm sure many others - a huge amount of stress."
She is now pursuing a clinical negligence case against the Royal Wolverhampton NHS Trust, which carried out a recall of the locum's patients in December 2021.
An investigation, shared with patients, states the consultant, who started treating NHS patients at the hospital in October 2021, had been wearing new varifocal spectacles when carrying out treatments.
Jordan Higgs, a legal executive from the clinical negligence team at FBC Manby Bowdler, is supporting Mrs Kitching along with several other affected patients.
Mr Higgs said: "She [the locum] described the glare from the lighting in the treatment rooms as too bright and, in an attempt to reduce the effects of the glare, she changed the patients' head position when injecting.
"This was a change from usual practice and appears to have had dire results."
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