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Welcome To Drishti Ocular Prosthetics Training & Research Center | A Custom Made Artificial Eye Center
Manufacturing Process
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2. The Ocularist inspects the condition of the socket. The horizontal and vertical dimensions and the periphery of the socket are measured.
3. The procedure is essentially painless and includes instillation of Alginate paste in the eye socket under the impression tray to get the impression of eye socket.

4. This impression is translated into a wax model and after due treatment, this wax model is tried in the patient's eye socket for fit.
The Ocularist will primarily be smoothing and reshaping the wax so that the impression is the right shape for your eye lids to reset properly when your eye is open, and then to close properly when you blink. He will also be trying to shape the wax so that it fills out certain areas around your socket to give your eye a natural look.
6. The Ocularist will insert and take out the wax impression several times during this process .It is not painful, although your eye socket may get a little irritated.

7. The Ocularist paints the iris. An iris button (made from a plastic rod using a lathe) is selected to match the patient's own iris diameter. Typically, iris diameters range from 10-13 mm. The iris is painted on the back, flat side of the button and checked against the patient's iris by simply reversing the buttons so that the color can be seen through the dome of plastic. When the color is finished, the Ocularist removes the conformer, which prevents contraction of the eye socket.

The Ocularist hand carves a wax molding shell. This shell has an aluminium iris button imbedded in it that duplicates the painted iris button. The wax shell is fitted into the patient's socket so that it matches the irregular periphery of the socket. The shell may have to be reinserted several times until the aluminium iris button is aligned with the patient's remaining eye.

9. A plaster-of-paris cast is made of the mold of the patient's eye socket. After the plaster has hardened (about seven minutes), the wax and alginate mold is removed and discarded. The aluminium iris button has left a hole in the plaster mold into which the painted iris button is placed. White plastic is then put into the cast, the two halves of the cast are put back together and then placed under pressure and plunged into boiling water. This reduces the water temperature and the plastic is thus cured under pressure for about 25to30 minutes. The cast is then removed from the water and cooled.

10. The plastic has hardened in the shape of the mold with the painted iris button imbedded in the proper place. About 0.5 mm of plastic is then removed from the anterior surface of the prosthesis. The white plastic, which overlaps the iris button, is ground down evenly around the edge of the button. This simulates how the sclera of the living eye slightly overlaps the iris. The sclera is colored using paints, chalk, pencils, colored thread, and liquid plastic syrup to match the patient's remaining eye. Any necessary alterations to the iris color can also be made at this point

11. The prosthesis is then returned to the cast. Clear plastic is placed in the anterior half of the cast and the two halves are again joined, placed under pressure, and returned to the hot water. The final processing time is about 30 minutes. The cast is then removed and cooled, and the finished prosthesis is removed. Grinding and polishing the prosthesis to a high luster is the final step. This final polishing is crucial to the ultimate comfort of the patient. The prosthesis is finally ready for fitting.
After dispensing the prosthesis the patients are educated for the care of the prosthesis as well as protection of the other normal eye. The entire procedure takes about 12 hours that is divided in two days and patient can walk out with a custom ocular prosthesis on the 2nd day of appointment.