Dawn
I am not aware of any specific regulations or guidance on this, but this is not in my normal area of expertise. You might find it helpful to speak to an ophthalmologist to see what they say.
Chris
Chris Packham
FRSPH, FInstSMM, MCMI, MIIRSM, MBICSc
EnviroDerm Services
Unit 10, Building 11, The Mews, Mitcheldean, GL17 0SN
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