|Year : 2022 | Volume
| Issue : 3 | Page : 747-748
Orientation of the iris in ocular prosthesis use of a light source
Dinesh Rokaya1, Pawarit Wanichsetakul2, Suppapong Tirakunwichcha3, Preamjit Saonanon3
1 Department of Opthalmology, Dental Biomaterial Science, Faculty of Dentistry, Chulalongkorn University; Department of Ophthalmology, Oculoplastic and Reconstructive Surgery, Faculty of Medicine, King Chulalongkorn University, Bangkok, Thailand
2 Department of Ophthalmology, Oculoplastic and Reconstructive Surgery, Faculty of Medicine, King Chulalongkorn University, Bangkok; Department of Ophthalmology, Thammasat University Faculty of Medicine, Rangsit, Pathumtani, Thailand
3 Department of Ophthalmology, Oculoplastic and Reconstructive Surgery, Faculty of Medicine, King Chulalongkorn University, Bangkok, Thailand
|Date of Submission||12-Dec-2019|
|Date of Decision||21-Dec-2019|
|Date of Acceptance||28-Mar-2020|
|Date of Web Publication||2-Nov-2022|
Dr. Dinesh Rokaya
Oculoplastic and Reconstructive Surgery, Department of Ophthalmology, Faculty of Medicine, King Chulalongkorn University, Bangkok 10330
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Rokaya D, Wanichsetakul P, Tirakunwichcha S, Saonanon P. Orientation of the iris in ocular prosthesis use of a light source. J Datta Meghe Inst Med Sci Univ 2022;17:747-8
Esthetics play an important role in the social and professional life. Loss of eye causes severe social and professional life impairment. Ocular prosthesis helps in the rehabilitation of patient's eye defect caused from various causes such as congenital, trauma, and tumor., For the natural appearance of the ocular prosthesis, color, contour, and shape of the ocular prosthesis including the orientation of the iris should match with the fellow eye.,, Orientation of the iris in ocular prosthesis sometimes presents a problem and often needs readjustment of the iris position., This article presents an innovative technique for the orientation of the iris position in an ocular prosthesis using a light source.
A 42-year-old male presented with a right eye defect from trauma. At the first visit, an ocular impression of the anopthalmic socket was made using a stock ocular tray with polyvinyl siloxane impression material (3M ESPE, Express, 3M, USA). The patient was given a right stock ocular prosthesis, and its iris (center of the ocular prosthesis) is not coinciding with the natural eye on the left side as confirmed from the light source (torch) [Figure 1]a and [Figure 1]b. This prosthesis was used as a temporary prosthesis until the fabrication of the final prosthesis.
|Figure 1: (a and b) The patient with right eye defect and with stock ocular prosthesis and its iris (center of the eye) is not coinciding with the natural eye on left side. (c and d) The patient with customized stock conformer with the position of the iris marked. (e and f) The patient with the final ocular prosthesis showing the iris (center of eye) coinciding with the natural eye. The position of the iris was confirmed using a torch from front at ½ m|
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At the second visit, ocular conformer was tried and adjusted the size, shape, and contour to simulate the shape of the natural eye (left eye). Then, the position of the iris of the stock conformer was accessed using the same torch. The patient was asked to sit and look straight, and a torch light source (Elcometer Safety Torch, Elcometer Ltd., UK) was hold in front of the patient at ½ m away from the patient at the level of patient's eyes. The center of the iris on the confirmer and the point of the light point were coincided and the center of the iris was marked on the conformer [Figure 1]c and [Figure 1]d. The light source 2–3 times to confirm the position of the iris of the prosthesis. The final prosthesis was fabricated with heat-polymerized polymethyl methacrylate resin (Vertex-Dental, Zeist, Netherlands) according to the manufacturer's instructions taking the shade from the patient's natural eye and it is tried on the patient [Figure 1]e and [Figure 1]f. The iris position of the prosthesis was verified using the same light source [Figure 2] and similar conditions. The figures of the conformer and ocular prosthesis is shown is shown in [Figure 3].
|Figure 2: Torch used to check iris position in the ocular prosthesis and in natural eye|
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|Figure 3: (a) Marking of iris (center of eye) done in stock conformer. (b) Final ocular prosthesis|
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This method is useful and cost-effective for the orientation of the iris and the confirmation of the iris center in the ocular prosthesis. This technique can be also used in the orientation of the iris in the orbital prosthesis.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that his names and initials will not be published, and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3]