Carl Zeiss has announced employee Michael Crewe lost his battle with cancer earlier this month.
A company statement said: 'Michael (Bill) will be sadly missed by those who both knew and worked with him and our thoughts are with his family at this time.
'A well-known and respected individual, Michael’s personality was infectious and through the strong relationships he built personally and professionally, his passing will be a loss to both Carl Zeiss and the broader ophthalmic community.
'During his 25 years with the company, Michael became a key member of our team and showed unerring loyalty to his work and his customers, always going the extra mile to satisfy and support those that relied on him.
'His commitment, drive, loyalty and professionalism will remain in our memories and his time at Zeiss will be recalled fondly by all. He will be sorely missed.'