Transcript Artificial Eye.docx












INTRODUCTION
RAW MATERIALS
HISTORY
WHO IS ELIGIBLE ?
AIMS
MAKING AN ARTIFICIAL EYE
NORMAL & ARTIFICIAL VISION
PRECAUTIONS
ADVANTAGES
DISADVANTAGES
CONCLUSION
An artificial eye is a prosthetic device
resembling the anterior surface of a
normal eyeball. It is fitted under the
upper and lower eyelid of an eye that
has been removed.
 It does not function as well as the real
eye and does not have crystal clear
vision.
 The term may also refer to an ocular
prosthetic.

Plastic and glass are the main material
that makes up the artificial eye.
 Wax and plaster of paris are used to
make the molds. A white powder called
alginate is used in the molding process.
 Paints and other decorating materials are
used to add life-like features to the
prosthesis.



The very first artificial eyes were made
by Roman and
Egyptian priests as early as the 5th
century BC.
They were made of painted clay attached
to cloth and
worn outside the socket.
.


Centuries later, the first
in-socket artificial eyes were made of
gold, coated with coloured enamel.
Then, in the later part of the sixteenth
century, the Venetians started making
artificial eyes out of glass.
Those who had a severe Retinal
Pigmentosa
 Those who are suffering from agerelated macular degeneration

The aims with all artificial eye treatment
is to help the patient through the
operation of eye removal and to ensure
the patient is happy with its appearance,
its comfort and the psychology of having
an eye socket without a natural eye.
The perfect artificial eye is one which:
 Is comfortable
 Shows good movement
 Looks normal to the observer
 Is easy to look after
A magnified image of an eye with AMD
Age-related macular degeneration (AMD)
Four stages of Retinal Pigmentosa
1
2
3
4
Take an impression of the eye socket.
 Impression is encased in dental stone,
which is very similar to plaster of paris.
 We obtain a wax piece that constitutes a
pattern for the artificial eye.
 An iris button, similar to the pupil, iris,
and cornea of the front of the eye is
chosen and built into the wax pattern.


When satisfied with the wax pattern,
we make a final mold of dental stone
around it in a fiberglass flask.
A
thin layer of plastic is ground,
filed and sanded from the front
surface of the eye.
We then make a painting shell by placing
a clear polyethylene.
 The coloring of the artificial eye is done
with the greatest of care.
 When the color is judged to be correct,
the eye is returned to the final mold and
the layer of transparent acrylic is cured
onto the front surface to protect the
color.

Electrodes and stimulated neurons
Normal vision- Begins when light enters
and strike on photoreceptor cells. These
cells convert light to electric impulses
that are sent to brain via optic nerves.
 Artificial vision- The camera captures
images and sends to retina implant. It
stimulates neurons. The stimulated
neurons send information to brain via optic
nerves.

PROSTHESI DO NOT PLACE THE
ARTIFICIAL EYE IN MOUTH;COULD
CAUSE CHOKING AND/OR DEATH.
 DO NOT PLACE/ALLOW THE
ARTIFICIAL EYE TO COME IN CONTACT
WITH ALCOHOL OF ANY FORM.
 ALCOHOL WILL ABSORB INTO AND
CAUSE CRAZING IN THE PROSTHESIS
WHICH WILL CAUSEIRREPARABLE
DAMAGE.

IF THE PROSTHESIS CAUSES PAIN,
REMOVE PROSTHESIS AND RETURN
TO YOUR OPHTHALMOLOGIST
AND/OR PHYSICIAN IMMEDIATELY.
 HANDLE WITH CARE. IE: DON’T
DROP, SCRATCH, SCRAPE, OR
THROW THEPROSTHESIS.
 KEEP AWAY FROM SOLVENTS AND
CHEMICALS, WHICH CAN BE
ABSORBED INTO PROSTHESIS.

Its shine and especially its natural
appearance.
 The very smooth, hard and resistant
surface with its particular good surface
characteristics.
 A surface, that on basis of its
manufacture technique is completely
freely of elevation.
 The good moistening effect for covering
the surface with tears.







Surgery is required to implant the
electrode array.
Costly.
The vision is restored partially
Repairing is difficult if any of the devices
got damaged.
Those who lost their visions due to other
reasons could not use this device.
Life expectancy of an Ocular Prosthesis is
4.8 years.
Revolutionary piece of technology.
 Good news for AMD and retinal
pigmentosa patients.
