| 摘要 |
An improved ocular prosthesis is provided in which the diameter of the pupil of the prosthesis can readily be varied to correspond to the diameter of the pupil of a person's natural eye when same is exposed to either direct or indirect light. The ocular prosthesis comprises a body portion having an anterior surface, a spatially disposed posterior surface, and a channel formed therebetween; an iris forming member secured to the anterior surface of the body portion, the iris forming member having a transparent central portion with a diameter substantially corresponding in size to the diameter of the pupil of the natural eye when same is exposed to indirect light, an outer iris colored portion, and a pupil colored area selectively positioned in the transparent central portion, the pupil colored area substantially corresponding in diameter to the diameter of the pupil of the natural eye when same is exposed to direct light; a pupil colored surface forming member disposed within the body portion between the posterior surface of the body portion and the channel such that the pupil colored surface member is substantially adjacent the channel and at least a portion of the pupil colored surface forming member is aligned with the transparent central portion of the iris forming member; and an iris colored member positioned within the channel of the body portion, the iris colored member being selectively movable between a first position in which the iris colored member is in a non-interposing relationship between the transparent central portion of the iris forming member and the pupil colored surface member and a second position wherein the iris colored member is interposed between the transparent central portion of the iris forming member and the pupil colored surface forming member.
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