Degenerative changes in the vitreous body. [hyalo- + G. -osis, condition]
- asteroid h. numerous small spherical bodies (“snowball” opacities) in the corpus vitreum, visible ophthalmoscopically; an age change, usually unilateral, and not affecting vision.
- punctate h. a condition marked by minute opacities in the vitreous.

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hy·a·lo·sis (hi″ə-loґsis) [hyal- + -osis] degenerative changes in the vitreous body.

Medical dictionary. 2011.

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