Ocular Synthesis

OCULAR PROSTHESIS FOR A CASE OF PHTHISIS BULBI

INTRODUCTION

Ocular prosthesis has been used since centuries to provide cosmetic replacement for missing eye [1]. Most ocular defects result from trauma but occasionally tumors also require removal of eye [2].The defect can cause considerable physical, psychological and emotional problems. Fabricating a prosthesis that appears real and at the same time can achieve consistent visual amalgamation with the surrounding tissue requires both artistic and technical expertise. The constructed prosthesis must replicate the missing features so accurately that the casual observer would notice nothing that would draw attention to the prosthetic reconstruction. Replacement of the lost eye helps the patient …show more content…
The present clinical situation existed as the patient was from a poor socio-economic status and lack of proper knowledge, awareness and literacy leading to improper care. There was no associated pain, discomfort or residual oedema on palpation. Treatment planning was done and fabrication of a custom made ocular prosthesis was decided upon. Impression of the defective eye was made in light viscosity polyvinyl siloxane using a custom tray. A 2-3 mm diameter perforation was made around approximately at pupil location to attach a syringe for injecting impression material. Multiple perforations of 1-2 mm were made over the remainder of the surface to suffice for the retention of the impression material. The tray was placed in the socket and low viscosity polyvinyl siloxane was loaded onto the syringe. The impression material was injected into the tray, placed into the defect and patient was instructed to perform all the movements of the eye, so that the functional impression was recorded. After removal from the socket impression was checked for acceptability. Investing of the impression was done with dental stone.A wax pattern conformer was then carved. Try-in was done with the wax conformer to assess the contour, fit, size, comfort and support from …show more content…
The facial region remains a challenge when it comes to the replacement of any anatomic structure by artificial means.A maxillofacial Prosthodontist has to plan carefully along with meticulous attention to detail in order make a major contribution in the rehabilitation of the patient with an ocular defect. Many optical companies have developed mass-produced stock acrylic resin prosthesis and although the fabrication is much faster, the results are not entirely satisfactory. Custom made, hand painted, and individually constructed acrylic resin artificial eye have been proved to be a more satisfactory ocular replacement. In a custom made acrylic resin eye the iris and the sclera are fabricated and painted individually and thus provide more precise and accurate aesthetics. Advantages include improved facial contours, improved adaptation to underlying tissues, increased mobility of the prosthesis, and enhanced esthetics.The ocular prostheses are either ready-made or custom-made and are produced from either glass or methyl methacrylate resin. Glass is subject to damage and surface deterioration from contact with orbital fluids, leading to a usable life expectancy of few months and is thus not preferred as the material of

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