(Q2) Eye

Question 1

Underlying Structures of the Eye

Answer 1

oculus (eyeball)
-margins of eye socket
-connective tissue inside of eyelids
(tarsus)

Question 2

Oculus (eyeball)

Answer 2

Spherical organ used for sight
90% of the “sphere” is internal
10% of the “sphere” is responsible
for surface form

Question 3

Exophthalmos

Answer 3

“bulging” eyes

Question 4

Margins of the Eye

Answer 4

Supraorbital area
Side of nose
Temple
Cheek

Question 5

Tarsus (pl. tarsi)

Answer 5

Connective tissue within the eyelids
Provides support and contributes
largely to surface form

Question 6

Projections and curvature

Answer 6

Supraorbital area most anterior (eyebrow area)
Cheek area second most anterior

Anterior edge of eye/eyelid is slightly posterior to oblique plane from supraorbital area to cheek

Question 7

Medial corner of eye

Answer 7

Medial corner of eye is more anterior than lateral corner of eye

Question 8

Palpebrae (eyelids)

Answer 8

-superior palpebra
-inferior palpebra
Superior palpebra is three times
larger than the inferior

Question 9

Line of Eye Closure

Answer 9

• Created when the two palpebrae are closed
• Line of closure is a subtle dipping curve with curving projection
• Lateral end is slightly more posterior
• At the line of closure, the upper eyelid protrudes slightly more anterior than the lower eyelid

Question 10

Superior margin of the eye socket

Answer 10

Supra orbital area
Bony protrusion created by the frontal bone (where your eyebrows sit)
Most anterior of eye margins
supra = above
orbital = eye

Question 11

Naso-orbital fossa

Answer 11

naso = nose
orbital = eye
fossa = depression (ditch)
Depression at the superior, medial corner of each eye

Question 11

Inner canthus

Answer 11

Most medial edge of the line of eye closure
Small elevation over the tear duct

Question 12

Orbital pouch

Answer 12

“Puffy” tissue just inferior to the
inferior palpebra
“Bags” under the eyes
An acquired facial marking

Question 13

Supercilium

Answer 13

eyebrow hair
The eyebrow consists of three parts
-head - most medial
-body - intermediate to head & tail
-tail - most lateral

Question 14

Position of the eyebrow

Answer 14

Medial margin - vertical line from
the wing of the nose
Lateral margin - oblique line from
wing of nose through lateral corner
of eye

Question 15

Cilia

Answer 15

eyelashes
Cilia on upper lid are longer
Cilia on lower lid are shorter and more sparse
When eyelids meet the cilia do not interlace
Curvature of the eye causes the cilia to fan out
Hairs are irregular in length and spacing
Usually no hairs appear in extreme medial or lateral corners
Cilia of superior palpebra curl upward
Cilia of inferior palpebra curl downward

Question 16

Superior palpebral sulcus

Answer 16

Facial markings of the eye

Question 17

Inferior palpebral sulcus

Answer 17

Facial markings of the eye

Question 18

Optic facial sulci

Answer 18

Facial markings of the eye

Question 19

Oblique palpebral sulcus

Answer 19

Facial markings of the eye

Question 20

Common transverse sulcus

Answer 20

Facial markings of the eye

Question 21

Linear sulci

Answer 21

Facial markings of the eye