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A set of 12 lorgnettes to aid with further research into dyslexia.
Set consists of: BPI 450nm, BPI Omega 50%, BPI Omega 70%, BPI Mu 70%, BPI Mu 80%, BPI 456, BPI 500 Delta, BPI 540nm, BPI 550 Alpha, BPI 600, BPI IR Blue 10%, BPI IR Blue 40%.
Manufacturer: BPI
Manufacturer SKU: 367370
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