punctum /punc·tum/ (pungk´tum) pl. punc´ta [L.] a point or small spot.
Punctum
punctum
punctum cae´cum blind spot.
punctum lacrima´le lacrimal point.
punctum prox´imum near point.
punctum remo´tum far point.
punc·tum (p ngk t m)n. pl. punc·ta (-t ) 1. The tip of a sharp anatomical process. 2. A minute round spot differing in color or appearance from the surrounding tissues; a point. |
Punctum
Tiny opening at the inner corners of the upper and lower lids. The area for the beginning of tear drainage.
Mentioned in: Dacryocystitis
punctum
[pungk′təm]
a physiologic area or point.
punctum
pl. puncta [L.] a point or small spot.
imperforate punctum
congenital absence of an opening in the lacrimal punctum, usually the lower, occurs most often in toy and miniature poodles. Commonly absent also in pigs.
misplaced punctum
variations in the position of the lacrimal puncta, seen most commonly in brachycephalic dogs, may interfere with tear drainage.
punctum nasolacrimal
see lacrimal punctum.
obstructed punctum
may result from foreign bodies, inflammation, or swelling of the lower eyelid.
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