|LETTER TO EDITOR
|Year : 2016 | Volume
| Issue : 2 | Page : 139-141
Fabrication of custom-made eye prosthesis with accuracy
Sunil Kumar Mishra1, Ramesh Chowdhary2, Harsh Mahajan3, Puja Hazari3
1 Department of Maxillofacial Prosthodontics and Implantology, Peoples College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
2 Department of Maxillofacial Prosthodontics and Implantology, Rajarajeshwari Dental College, Bengaluru, Karnataka, India
3 Department of Maxillofacial Prosthodontics and Implantology, Peoples Dental Academy, Bhopal, Madhya Pradesh, India
|Date of Web Publication||13-Jan-2017|
Sunil Kumar Mishra
Department of Maxillofacial Prosthodontics and Implantology, Peoples College of Dental Sciences and Research Centre, Bhopal, Madhya Pradesh, India
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Mishra SK, Chowdhary R, Mahajan H, Hazari P. Fabrication of custom-made eye prosthesis with accuracy. J Curr Res Sci Med 2016;2:139-41
|How to cite this URL:|
Mishra SK, Chowdhary R, Mahajan H, Hazari P. Fabrication of custom-made eye prosthesis with accuracy. J Curr Res Sci Med [serial online] 2016 [cited 2020 Nov 25];2:139-41. Available from: https://www.jcrsmed.org/text.asp?2016/2/2/139/198376
Loss of an eye has a psychological effect on an individual and their families. When time is taken into considerations, stock ocular prosthesis can be given to a patient. But the disadvantages with a stock ocular prosthesis is that it may be ill fitting, and matching its shade with the contralateral eye is difficult. A custom made ocular prosthesis increases the adaptiveness and movement of the eyeball. An exact colour match of the iris and sclera can be achieved in comparison to the contralateral eye.,,,
This article describes an effective method for the fabrication of custom-made eye prosthesis to simulate eye movements and exact colour matching to that of contralateral eye. Contralateral eye measurements were made as a guide for the fabrication of custom-made eye prosthesis. The measurements were taken from the inner canthus to the outer canthus, inner canthus to the center of pupil, center of the pupil to the outer canthus, bridge of the nose to the inner canthus, diameter of the cornea, length from the center of pupil to the lower eyelid, and center of the pupil to the outer limbus.
Primary impression of the defect was made with putty consistency addition silicone (Reprosil, Dentsply, Milford, USA), and the impression was poured in type II dental plaster (Kalabhai, Mumbai, Maharashtra, India) [Figure 1]. The special tray was fabricated with cold cure clear acrylic resin (DPI, Mumbai, India) and a syringe was attached to it [Figure 2]. The final impression of the socket was made with regular viscosity addition silicone (Reprosil, Dentsply, Milford, USA) and the instruction was given to the patient to do ocular movements to get functional impression of the socket. The impression was removed [Figure 3] and poured to obtain a three-piece split cast mold.
Try-in of the wax pattern obtained from the three-piece split cast mold was done to evaluate size, comfort, simulation of eye movement, and eyelid support. It was then flasked, and dewaxing was done followed by packing with tooth color acrylic resin (DPI, Mumbai, Maharashtra, India) to obtain eye shell.
For making corneal button of the same size as that of the contralateral iris of the patient, a wax pattern was made, and flasking [Figure 4] and dewaxing were done. The mold was packed with clear heat cure acrylic resin (Dentsply, Milford, USA) and polymerization was done. The corneal button was removed from the mold, and finishing and polishing was done [Figure 5]. Black acetate disk as the same size of the contralateral iris was cut from a sheet [Figure 6] and painted with acrylic paints (Camlin, Mumbai, Maharashtra, India). The painted iris disk was checked for color matching with the contralateral eye and was allowed to dry. With the help of adhesive (Fevikwik, Pidilite, Mumbai, India) the corneal button was adhered to the iris disk, and care was taken to avoid any air entrapment [Figure 7]. The obtained assembly was placed in the center of the eye shell made with tooth-colored acrylic resin (DPI, Mumbai, India) [Figure 6] with the help of measurements taken from contralateral eye. Try-in was done to evaluate the center of the iris, eyelid support, and position to be same as that of contralateral eye. A layer of wax was placed over the surface of sclera shell, and flasking and dewaxing were done. Red color threads were placed to the sclera portion of the shell to simulate capillaries, and packing of the mold was done with clear acrylic resin (Dentsply, Milford, USA). Curing was done, and the prosthesis was finished and polished [Figure 8].
|Figure 6: Black acetate disk for iris fabrication and tooth-colored resin eye shell|
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Custom-made eye prostheses provide more esthetic and precise result when compared to stock-eye prostheses. The commonly available materials and simple technique described in this article make it relatively easy to fabricate a custom-made eye prosthesis exactly simulating the contralateral natural eye with greater accuracy and which is acceptable to patients.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8]