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Summary

Summary Overview of the eye and visual pathway

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These notes will provide you with an an overview of the eye (including evolutionary considerations) and an introduction to the anatomy and physiology of the visual system.

Institution
Cardiff University (CF)
Course
Optometry









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Institution
Cardiff University (CF)
Study
Unknown
Course
Optometry
All documents for this subject (1)

Document information

Uploaded on
October 19, 2023
Number of pages
5
Written in
2023/2024
Type
Summary

Subjects

  • medicine
  • eyes
  • biology
  • retina
  • choroid
  • sclera
  • lens
  • optic nerve
  • ciliary body
  • opsin
  • crystallins
  • ommatedia
  • cornea
  • epithelial cells
  • cell
  • fovea
  • macula
  • uvea
  • photoreceptors
  • cones
  • rods
  • vitrous humour
  • conjunctiv

Content preview

opala overview of the eye and visual pathway
what is aneye Protozoa Asinglecellorganism with anucleus
o anorgan ableto detect light andmodify behaviour in Loeuglena Genusmicroorganismbelonging to Protozo
response tolight thensimple protozoamighthaveeyes Kingdom

f
Asinglecelleukaryotic microorganism
possesses aclearydefinednucleus
nuclear membrane
surrounded
by
personal study
ocular geometry topography
overview document
eye




types ofeyes
simpleeyes




evolution
ofeyes CharlesDarwin L
eyesevolve atleast 60separatetimes duringevolution
ofdifferent animalgroups




7




Why eyes evolve

sightless or sighted
availabilityoflight degreeofmobility oforganism
eyesare associated withrunning crawlinghoppingswimmingetc
Tomakemotion purposeful findfood sheltermating

, eyesevolvedin multicellular organisms 540 490mYearsago
Thetimewhenmostmajorgroupsof animalsfirstapp
infossilrecords defies Darwin'stheoryofevolutionI




É
s hi s t
action oflight
rhodopsin released
by



Tisane




firstappearedonEarth600mYearsago
structurehasn'tchange


this
tins structural proteinoflenses
crystal




toprovides highdensityproteinthatincreasesrefractiveindex
oftenseineye
evidence ofancienteyes
millionyo fossils
530
TheBurgessShalein CanadianRockies Britishcolumbia


Fmpoundeyesulssim FYFE
erateeye
Arthropod
eyes
Po dye
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