PMC4983568_01
Pre-operative photograph
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F1
The skin covering the defect was in satisfactory condition (Fig. 1).
Anterior-posterior radiograph
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F2
Stereolithography
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F3
Then, by stereolithography, a RP technique (layer-wise additive manufacturing), a solid physical model of the defect was fabricated (Fig. 3).
Wax pattern fabrication
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F4
Wax pattern (Modeling Wax, DPI, Mumbai, India) was made on the stereolithographic model and then the acrylic resin plate (DPI, Mumbai, India) was fabricated accurately (Fig. 4).
Acrylic plate fixed
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F5
The acrylic plate was then surgically fixed with titanium screws to obtain proper contour of the defect (Fig. 5).
Intra-ocular tissue bed
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F6
There was adequate depth and undercut between the upper and lower fornices for retention of the prosthesis (Fig. 6).
(A) Polyvinyl siloxane injected, (B) Impression obtained, (C) Modified tray-syringe assembly
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F7
Light viscosity polyvinyl siloxane (Reprosil; Dentsply DeTrey GmbH, Konstanz, Germany) was injected into the socket through the modified tray syringe assembly (Figs. 7A, B, and C).
(A) Selected stock eye (B) Alignment of prosthesis; (C) Wash impression with irreversible hydrocolloid
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F8
Peripheral and posterior surfaces were reduced and retentive grooves were made on the posterior surface (Fig. 8A).The modified stock eye was adapted to the wax pattern. A plastic sleeve was secured with sticky wax over the pupil, perpendicular to the plane of iris for aligning the prosthesis in correct relationship to the natural eye (Fig. 8B). At this stage a wash impression was made with irreversible hydrocolloid of the stock eye to redefine the contour of the socket bed for proper retention and stability (Fig. 8C).
Packing of eye prosthesis
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F9
A tinge of pink colored resin was given at the inner and outer canthus of the eye mold to simulate the natural eye and then curing was done (Fig. 9).
Post-operative photograph
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F10
After final finishing and polishing, the prosthesis was inserted (Fig. 10).