| 摘要 |
A prosthetic eye and a coordinating pair of glasses simulate dilation of the pupil of a normal eye. The prosthetic eye has a white scleral portion with a simulated iris is painted on the front. A polarized disc is located at the center of the iris. The polarized disc is placed on the horizontal transmitting axis. The center of the polarized disc is darkened with paint to simulate a pupil having a fairly small diameter. The back of the polarized disc is painted to blend with the iris or simulate the collarette of the eye. Over the top of the polarized disc and iris is a dome of material simulating the cornea of the eye. The prosthetic eye is used in conjunction with the special pair of eyeglasses having a lens formed of linearly polarizing material with the transmitting axis in the vertical plane. When the eyeglasses are used, it makes the pupil appear to dilate because it causes the entire disc to blacken when viewed through the polarized lens. Conversely, removal of the glasses causes it to lighten, showing the details painted on the back of the disc, thereby making the pupil appear smaller in diameter.
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