The earliest known evidence of the use of ocular prosthesis is that of a woman found in Shahr-I Sokhta, Iran [1] dating back to 2900–2800 BCE.[2] It has a hemispherical form and a diameter of just over 2.5 cm (1 inch). It consists of very light material, probably bitumen paste. The surface of the artificial eye is covered with a thin layer of gold, engraved with a central circle (representing the iris) and gold lines patterned like sun rays. On both sides of the eye are drilled tiny holes, through which a golden thread could hold the eyeball in place. Since microscopic research has shown that the eye socket showed clear imprints of the golden thread, the eyeball must have been worn during her lifetime. In addition to this, an early Hebrew text references a woman who wore an artificial eye made of gold (Yer. Ned. 41c; comp. Yer. Sanh. 13c). Roman and Egyptian priests are known to have produced artificial eyes as early as the fifth century BCE constructed from painted clay attached to cloth and worn outside the socket.[3]
The first in-socket artificial eyes were made of gold with colored enamel, later evolving into the use of glass (thus the name "glass eye") by the Venetians in the later part of the sixteenth century. These were crude, uncomfortable, and fragile and the production methodology remained known only to Venetians until the end of the 18th century, when Parisians took over as the center for artificial eye-making. But the center shifted again, this time to Germany because of their superior glass blowing techniques. Shortly following the introduction of the art of glass eye-making to the United States, German goods became unavailable because of WWII. As a result, the US instead made artificial eyes from acrylic plastic.[3]
Modern ocular prosthetics has expanded from simply using glass into many different types of materials
Limits of realism
Ocularists and eye surgeons have always worked together to make the most realistic artificial eye. For decades, all efforts and investments to improve the appearance of artificial eye are neutralized by the immobility of the pupil. A solution to this problem has been demonstrated recently.[4] The device is based on a LCD which simulates the pupil size as a function of the ambiant light.
for more information
http://www.chnpress.com/news/?Section=2&id=6857
2 .
A 5,000-year-old golden artificial eye that once stared out mesmerisingly from the face of a female soothsayer or priestess in ancient Persia has been unearthed by Iranian and Italian archaeologists.
The eyeball — the earliest artificial eye found — would have transfixed those who saw it, convincing them that the woman — thought to have been strikingly tall — had occult powers and could see into the future, archaeologists said.
It was found by Mansour Sajjadi, leader of the Iranian team, which has been excavating an ancient necropolis at Shahr-i-Sokhta in the Sistan desert on the Iranian-Afghan border for nine years.
Italian archaeologists said yesterday that the prophetess had also been buried with an ornate bronze hand mirror, which she presumably used to check her “startling appearance”.
They said the eyeball consisted of a half-sphere with a diameter of just over an inch. It was made of a lightweight material thought to be derived from bitumen paste. Its surface was meticulously engraved with a pattern consisting of a central circle for the iris and gold lines “like rays of light”.
Lorenzo Costantini, leader of the Italian group, said the eyeball still had traces of the gold that had been applied in a thin layer over the surface. On either side of it two tiny holes had been drilled, through which a fine thread, perhaps also gold, had held the eyeball in place.
Costantini said the woman had been as tall as 6 feet, putting her head and shoulders above most other women of the time. Aged between 25 and 30, she had a high sloping forehead, a “determined” jutting chin and dark skin, suggesting that she was from Arabia. Farad Foruzanfar, an Iranian anthropologist, agreed that the woman’s height and her “Afri-canoid cranial structure” suggested that she came from the Arabian Peninsula.
“She must have been a very striking and exotic figure,” Costantini told Corriere della Sera. He said the team had initially thought the eyeball might have been placed in the woman’s eye at burial. But microscopic examination had found an imprint left on her eye socket by prolonged contact with the golden eye. The socket also bore the marks of the thread, further proving that she had worn the eyeball in life.
Sajjadi said the skeleton had been dated to between 2900 and 2800 BC, when Shahr-i-Sokhta was a bustling, wealthy city and trading post at the crossroads of East and West. He said the woman might have arrived with a caravan from Arabia. Shahr-i-Sokhta means “Burnt City”, a local name referring to the fact that it burnt down and was rebuilt three times during Persia’s turbulent history before being finally destroyed in 2000 BC — about the time that Stonehenge was erected. The archaeologists said it was not clear what caused the woman’s death.
Costantini said the articial eye was clearly not intended to mimic a real eye but had “a special purpose... It must have glittered spectacularly, conferring on the woman a mysterious and supernatural gaze”. This would have been effective for someone who claimed to see into the future, such as a soothsayer or oracle.
Analaysis suggested that the woman may have suffered from an abscess on her eyelid because of long-term contact with the golden eyeball.
The archaeologists earlier unearthed what is believed to be the oldest backgammon set in the world, with 60 pieces made of turquoise and agate and a rectangular ebony board, probably imported from India.
The first in-socket artificial eyes were made of gold with colored enamel, later evolving into the use of glass (thus the name "glass eye") by the Venetians in the later part of the sixteenth century. These were crude, uncomfortable, and fragile and the production methodology remained known only to Venetians until the end of the 18th century, when Parisians took over as the center for artificial eye-making. But the center shifted again, this time to Germany because of their superior glass blowing techniques. Shortly following the introduction of the art of glass eye-making to the United States, German goods became unavailable because of WWII. As a result, the US instead made artificial eyes from acrylic plastic.[3]
Modern ocular prosthetics has expanded from simply using glass into many different types of materials
Limits of realism
Ocularists and eye surgeons have always worked together to make the most realistic artificial eye. For decades, all efforts and investments to improve the appearance of artificial eye are neutralized by the immobility of the pupil. A solution to this problem has been demonstrated recently.[4] The device is based on a LCD which simulates the pupil size as a function of the ambiant light.
3rd Millennium BC Artificial Eyeball Discovered in Burnt City | |
Skeleton of a woman having an artificial eye unearthed in Burnt City, southeast Iran | Discovery of an artificial eyeball belonging to 4800 years ago in the historic site of Burnt City has astounded archeologists. |
Tehran, 10 December 2006 (CHN Foreign Desk) -- Archeologists in Burnt City announced unprecedented discovery of an artificial eyeball, dated to 4800 years ago, in this historic site. Announcing this news, director of Burnt City archeology excavation team, Mansour Sajadi, said that this eyeball belongs to a sturdy woman who was between 25 to 30 years of age at the time of death. Skeletal remains of the woman were found in grave number 6705 of Burnt City’s cemetery. Regarding the material used to make this artificial eyeball, Sajadi said: “The material this artificial eyeball is made of has not yet been determined and will be assessed through later testing. However, at first glance it seems natural tar mixed with animal fat has been used in making it.” Initial studies on the eyeball also suggest formation of an abscess in the eyelid due to long-term contact with the eyeball. Moreover, remaining eyelid tissues are still evident on this artificial eyeball. According to Sajadi, even the most delicate eye capillaries were drawn on this eyeball using golden wires with a thickness measuring less than half a millimeter. There are also some parallel lines around the pupil forming a diamond shape. Two holes are also seen on the sides of this eyeball to hold it in the eye socket. Initial anthropological studies on the remaining skeleton of the woman to which this artificial eyeball belong revealed that she was of mixed race and died 4800 years ago between the ages of 25 to 30. A number of clay vessels, ornamental beads, a leather sack, and a bronze mirror have also been found in the grave of this woman. Located 57 kilometers from the city of Zabol in Sistan va Baluchistan province, southeast Iran, Burnt City is one of the most important prehistoric sites of the country which was well developed during the third millennium BC. Spreading over a 300,000 hectare area, Burnt City was recently recognized as mainland-Iran’s largest prehistoric site. The city experienced four stages of civilization and was burnt down three times, which is why it was named ‘Burnt City.’ Discovery of hundreds of historical sites including 166 satellite villages together with large numbers of archeological relics, skeletons, and ancient structures in the archeological site of Burnt City makes it holder of an unparalleled record in the history of archeological activities in Iran. Maryam Tabeshian foreigndesk@chn.ir |
http://www.chnpress.com/news/?Section=2&id=6857
2 .
5,000-Year-Old Artificial Eye Found on Iran-Afghan Border
Published February 20, 2007
London Times
The eyeball — the earliest artificial eye found — would have transfixed those who saw it, convincing them that the woman — thought to have been strikingly tall — had occult powers and could see into the future, archaeologists said.
It was found by Mansour Sajjadi, leader of the Iranian team, which has been excavating an ancient necropolis at Shahr-i-Sokhta in the Sistan desert on the Iranian-Afghan border for nine years.
Italian archaeologists said yesterday that the prophetess had also been buried with an ornate bronze hand mirror, which she presumably used to check her “startling appearance”.
They said the eyeball consisted of a half-sphere with a diameter of just over an inch. It was made of a lightweight material thought to be derived from bitumen paste. Its surface was meticulously engraved with a pattern consisting of a central circle for the iris and gold lines “like rays of light”.
Lorenzo Costantini, leader of the Italian group, said the eyeball still had traces of the gold that had been applied in a thin layer over the surface. On either side of it two tiny holes had been drilled, through which a fine thread, perhaps also gold, had held the eyeball in place.
Costantini said the woman had been as tall as 6 feet, putting her head and shoulders above most other women of the time. Aged between 25 and 30, she had a high sloping forehead, a “determined” jutting chin and dark skin, suggesting that she was from Arabia. Farad Foruzanfar, an Iranian anthropologist, agreed that the woman’s height and her “Afri-canoid cranial structure” suggested that she came from the Arabian Peninsula.
“She must have been a very striking and exotic figure,” Costantini told Corriere della Sera. He said the team had initially thought the eyeball might have been placed in the woman’s eye at burial. But microscopic examination had found an imprint left on her eye socket by prolonged contact with the golden eye. The socket also bore the marks of the thread, further proving that she had worn the eyeball in life.
Sajjadi said the skeleton had been dated to between 2900 and 2800 BC, when Shahr-i-Sokhta was a bustling, wealthy city and trading post at the crossroads of East and West. He said the woman might have arrived with a caravan from Arabia. Shahr-i-Sokhta means “Burnt City”, a local name referring to the fact that it burnt down and was rebuilt three times during Persia’s turbulent history before being finally destroyed in 2000 BC — about the time that Stonehenge was erected. The archaeologists said it was not clear what caused the woman’s death.
Costantini said the articial eye was clearly not intended to mimic a real eye but had “a special purpose... It must have glittered spectacularly, conferring on the woman a mysterious and supernatural gaze”. This would have been effective for someone who claimed to see into the future, such as a soothsayer or oracle.
Analaysis suggested that the woman may have suffered from an abscess on her eyelid because of long-term contact with the golden eyeball.
The archaeologists earlier unearthed what is believed to be the oldest backgammon set in the world, with 60 pieces made of turquoise and agate and a rectangular ebony board, probably imported from India.
No comments:
Post a Comment