n. an incision made in the capsule of the lens. In posterior capsulotomy a hole is made in the centre of the posterior capsule using a *YAG laser, thus providing a clear path for light rays to reach the retina. The laser light is aimed using a modified slit-lamp microscope from outside the eye.
n. a continuous tear made in the lens capsule of the eye. In anterior capsulorrhexis, performed during cataract surgery, the tear is made in the anterior surface of the capsule. It has the advantage over a *capsulotomy in making the residual capsule much more resilient to being torn during surgery.... capsulorrhexis
a type of *laser whose active medium is a crystal of yttrium, aluminium, and garnet. It is used for cutting tissue, for example in lens *capsulotomy or *iridotomy. Specialized types (e.g. the *holmium:YAG laser) are used for various specific purposes.... yag laser
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