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Barrier filter
OPTOMETRIC INSTRUMENTS
filter
Ocular Solutions Ltd
Europe: United Kingdom, England, Hampshire, Alresford
Post 2003
cardboard; plastic film
overall: 65 mm x 199 mm
2023.372
OPTOMETRIC INSTRUMENTS
filter
Ocular Solutions Ltd
Europe: United Kingdom, England, Hampshire, Alresford
Post 2003
cardboard; plastic film
overall: 65 mm x 199 mm
Hand-held barrier filter made of white cardboard containing two apertures filled with a yellow Fluorescein and a red Lissamine filter. Branded for a firm supplying contact lens and dry eye solutions and for the product Thera Tears.
2023.372
Gift of Mr Andrew Gasson FCOptom, 2023