DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.6271#0264
( 238 )
.integuments and a cartilage: they are extremely iaoveablu;.
.especially the upper. The glandules Meibomiance secrete
a sebaceous matter, that facilitates the motions of the eyelids,
and prevents their accretion during sleep. The cartilage be-
tween the conjunctive membrane and the common integu-
ments of the eyelid is semilunar, and termed the tarsus. The
edges of the eyelids have a number of short hairs arising from
them and turned outwards, called cilia, or eye-lashes. The
use of the eyelids is to cover the eyes during sleep ; to defend
them from dust and other substances, and too strong rays
of light; and to lubricate the conjunctiva by frequently
moving its secretion over the surface of the eye.
3. The puncta lachrymalia, two small orifices, one of
which is seen at the end of each eyelid near the nose. From
these openings, a canal goes downwards and inwards; and
meeting about half an inch from their origin, they form a sac,
called saccus lackrymalis, which is continued downwards
through the ductus ad nasum into the nose. The tears are
absorbed by the puncia lachrymalia, and conveyed into the
Hose through the sac and canal.
4. The lachrymal gland, which is situated in the su-
perior part of the orbit, in a peculiar depression : it is hard,
globate, of an oval form, and has a number of excretory
ducts which convey the fluid called tears, secreted by this
gland, on the surface of the eye.
5. The caruncula lachrymalis, a small red tubercle
in the internal canthus of each eye. It has a number of
hairs, and secretes a smegma: it is also of use to direct the
tears iuto the puncta lachrymalia.
6. The plica lunaris, or valvula semilunaris, a membranous
duplicature of the tunica conjunctiva, situated between the
caruncula lachrymalis and the ball of the eye. In sense
.integuments and a cartilage: they are extremely iaoveablu;.
.especially the upper. The glandules Meibomiance secrete
a sebaceous matter, that facilitates the motions of the eyelids,
and prevents their accretion during sleep. The cartilage be-
tween the conjunctive membrane and the common integu-
ments of the eyelid is semilunar, and termed the tarsus. The
edges of the eyelids have a number of short hairs arising from
them and turned outwards, called cilia, or eye-lashes. The
use of the eyelids is to cover the eyes during sleep ; to defend
them from dust and other substances, and too strong rays
of light; and to lubricate the conjunctiva by frequently
moving its secretion over the surface of the eye.
3. The puncta lachrymalia, two small orifices, one of
which is seen at the end of each eyelid near the nose. From
these openings, a canal goes downwards and inwards; and
meeting about half an inch from their origin, they form a sac,
called saccus lackrymalis, which is continued downwards
through the ductus ad nasum into the nose. The tears are
absorbed by the puncia lachrymalia, and conveyed into the
Hose through the sac and canal.
4. The lachrymal gland, which is situated in the su-
perior part of the orbit, in a peculiar depression : it is hard,
globate, of an oval form, and has a number of excretory
ducts which convey the fluid called tears, secreted by this
gland, on the surface of the eye.
5. The caruncula lachrymalis, a small red tubercle
in the internal canthus of each eye. It has a number of
hairs, and secretes a smegma: it is also of use to direct the
tears iuto the puncta lachrymalia.
6. The plica lunaris, or valvula semilunaris, a membranous
duplicature of the tunica conjunctiva, situated between the
caruncula lachrymalis and the ball of the eye. In sense