Manufacture of crown glass by blowing (left) and

Manufacture of crown glass by blowing (left) and plate glass by casting (right). From The Universal Magazine London 1760. Glass workers were susceptible to cataract caused by glare of the furnace. Hand-coloured engraving

1760 Blowing Casting Cataract Caused Furnace Glare Hand-coloured Occupational Ophthalmology Susceptible

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