BIOL 065 Lecture Notes - Lecture 1: Conjunctivitis, Cranial Nerves, Choroid
7 May 2018
School
Department
Course
Professor
Corneal Transplants
Conjunctivitis - “Pink Eye” is Bacterial
Glaucoma: (Up arrow) Aqueous Humor Pressure
Cataract: Cloudy Lens
“Floaters” in Vitreous Humor - shed Rods and Cones
Nearsightedness, Farsightedness
Detached Retina and Laser Treatment
When and where does the eye form?
Eye form during embryonic in the ectoderm layer.
Embryonic development of the eye
Antenne goes out until it reach and touch the skin.
Bulbs go out and out until it reach the cornea.
Bulbs collapse, instead of round, it goes into a double layered cup attached to the brain.
the pop of the balloon forms?
the retina.
What forms from the retina?
Optic nerve
Retina may detach, never firmly secure and pull apart
What are the 4 bones that surround and protect the eyes?
Zygomatic, Maxillary, Frontal bone, and sphenoid
What is the fat surrounding the eye?
peri(around) orbital(eye) fat, cushion for the eye. When they are close to death, they will use this
fat. Sunken eyes, eyes go back to the skull. It is critically important to feed them immediately,
near death.
3 tunics of the eyeball
fibrous tunic comprising the cornea and sclera
vascular tunic comprising the iris, ciliary body, and choroid
an internal, nervous tunic, or retina
sclera (white)
Outer layer is fibrous - thick white connective tissue, durable and strong. Extends all the way to
the front
Cornea (clear)
Rest of the region and clear / transparent is the purpose: permit light
Muscles that move the eye in harmony, attach to the sclera, you can touch the white of your
eye.
Cornea is sensitive and does it have a direct blood supply to the eye?
No, scratching the cornea is a bad injury.
Handle contact lens carefully
Cornea may be damaged by?
a splash of chemical or fragments into the eye, vision may be lost
What happens when the child is first born?
The doctors or surgeon examine the child’s eye to check if it has opaque cornea due to the
improper embryonic development, so transplant of the eyes if it is opaque or cloudy eyes. Can
transplant any eye from anybody, body won't reject it
What happens when the cornea is too round?
an individual becomes nearsighted, Radial keratotomy of cornea. Use lasers to make tiny
incisions in the cornea all around the outer edge
Flatten the cornea, will?
correct the nearsightedness, no longer need glasses
When we talk about the cornea damaged from Bell’s Palsy, on the lateral side of the orbit. There
are lacrimal glands, refers to tears. Tears wash across the surface of the eye, keeping the eyes
moist. Leading to the lacrimals duct.
Tears wash across the surface of the eye to keep the eye moist, but where does it enter
next?
Lacrimal duct
What is the glossy surface on the inside of the eye?
conjunctivi, spread the tears.
Conjunctivitis
bacterial infection. Sclera of the eye turns pink. Loads of tears due to dilation. Contaminated
and produce bacterial tears. A person turn a knob on a door with their bacterial tears, somebody
can use that door knob and get a pink eye
6 astrological muscle.
What are the 4 muscles attach to the sclera?
Superior rectus
Document Summary
Floaters in vitreous humor - shed rods and cones. Eye form during embryonic in the ectoderm layer. Antenne goes out until it reach and touch the skin. Bulbs go out and out until it reach the cornea. Bulbs collapse, instead of round, it goes into a double layered cup attached to the brain. the pop of the balloon forms? the retina. Retina may detach, never firmly secure and pull apart. What is the fat surrounding the eye? peri(around) orbital(eye) fat, cushion for the eye. When they are close to death, they will use this fat. Sunken eyes, eyes go back to the skull. It is critically important to feed them immediately, near death. 3 tunics of the eyeball fibrous tunic comprising the cornea and sclera vascular tunic comprising the iris, ciliary body, and choroid an internal, nervous tunic, or retina sclera (white) Outer layer is fibrous - thick white connective tissue, durable and strong.
