Take a look at these: A tray of example glass eyes on display at the medical shop of ocularist Gerhard Greiner who makes prosthetics for people who lost theirs
Delicate process: Mr Greiner hand-blows molten glass to create a sphere which form the base of the prostethic eye
Getting a perfect match: Each eye takes about an hour to make because Mr Greiner painstakingly ensures the colour matches that of the patient
Stunning detail: Modern-day prosthetic eyes are often made to fit over a patient's current eyeball if in place or over a ball which has already been fitted into the eye socket
Seeing is believing: Mr Greiner inserts the new glass prosthetic into the eye of patient Helmut Sechser, who has come in for a replacement
Starting the process: Mr Greiner holds a glass tube over a bunsen burner as he gets to work in his medical equipment shop in Munich
A small price to pay for renewed confidence: A bespoke glass eye prostheses typically costs about ¿350 ($457)
Taking shape: Mr Greiner creates the spherical appearance of the eye by delicately blowing air through molten glass
Mastered the art: Modern-day versions are typically a hollow half sphere that fits over the non-working eye if it still in place
Amazingly realistic: Mr Greiner painstakingly ensures he gets the right colour for each patient and creates detailed drawing of the veins
Melting point: Mr Greiner holds the glass eye over the bunsen burner so it becomes soft enough for him to mould into shape
Clever science: If the patient has no existing eyeball, the prostethic is fitted over a ball that has been surgically implanted into the eye socket and attached to the muscles
Something for everyone: A tray of glass eyes with different-coloured irises ready to be fitted to Mr Greiner's patients
Giving hope to so many: Mr Greiner assesses a patient before fitting them a replacement glass eye in his Munich medical shop
Time for a change: Mr Greiner looks through his examples of glass eyes during his meeting with patient Helmut Sechser
Out with the old: Mr Greiner removes the glass eye of patient Helmut Sechser as he prepares to replace it
So realistic: The ocularist compares two different former glass eyes of patient Helmut Sechser in his medical equipment shop in Munich
In the palm of hand: Patient Helmut Sechser holds his old glass eye before being fitted with a new one
Keeping it as back-up: Patient Helmut Sechser cleans his old glass eye with water before packing it away in a box
Packed neatly away: The old glass eye of patient Helmut Sechser sits in a small box at the medical equipment shop of ocularist Gerhard Greiner in Munich
Before: Patient Helmut Sechser looks in a mirror without his glass eye before being fitted for a new one
After: Ocularist Gerhard Greiner (seen in mirror) looks at Mr Sechser's new glass eye
