Eye Anatomy and Function Quiz

Eye Anatomy and Function

• Eye Structures and Origins:
  • Parts of the eyeball: Lens (a), Iris (c), Neuroreceptors (b)
  • Source of the eyeball's origin: Neural ectoderm (a), Ectoderm of skin (b), Mesenchim (c)
• Binocular Vision:
  • The ability to look with two eyes without mixing monocular images
• Conjunctivitis Symptoms:
  • Diminishing vision, Sensation of sand, Dizziness
• Superior Oblique Muscle Innervation:
  • Innervated by the trochlear nerve (N. trochlearis)
• Corneal Staining Stains:
  • Silver nitrate, Fluorescein, Boric acid, Iodine
• YAG Laser in Cataract Treatment:
  • Used in a variety of cataract surgery, including secondary, traumatic and cortical cataracts (but not congenital)
• Sensory Innervation of Choroid:
  • The average rate and is strong. Not none, or weak.
• Worth Apparatus and Monocular Vision:
  • Patients with monocular vision see 5 circles on the Worth apparatus.
• Parts of the Optic Nerve:
  • Optic nerve, chiasm, visual pathways, visual center (intracranial, intracanalicular, intraorbital, optic nerve head)
• Time for impulse to reach occipital cortex after retinal stimulation:
  • Approximately 124 milliseconds
• Nutriment of the choroid:
  • Provided by the posterior ciliary arteries.
• Tear Drainage Pathway:
  • Glandula lacrimalis, canaliculi, saccus lacrimalis, canalis nasolacrimalis
• Dychromasia:
  • Low sensitivity to one or two colors or disorders in the visual field
• Superior Orbital Fissure Contents:
  • oculomotor nerve (N.oculomotorius), central retinal artery, anterior ciliary arteries, central retinal vein, optic nerve
• Pterigium:
  • presence of subconjunctival tissue in the internal angular area that passes over the cornea (usually due to chronic eye irritation/exposure)
• Retina Structure
  • Posterior layer, fibrous layer, middle layer
• Intraocular Pressure Measurement (Machlakov):
  • Measurement range of 17–26 mm Hg
• Foreign Body Removal from Cornea:
  • Use of a special needle; keep under observation for 3 days
• Ciliary Body and Iris Blood Supply:
  • Short posterior ciliary arteries
• Innervation of the Cornea:
  • Provided by the trigeminal nerve (N. trigeminalis)
• Eye Fundus Findings in Retinitis Pigmentosa:
  • Local hemorrhages, bone crumbs, red cherry spots, dystrophic lesions
• Drainage System (Eye):
  • Includes trabecula, Schlemms canal, venous collector system
• Eyellids Muscles:
  • Orbicularis oculi muscle
• Intraocular Fluid Production:
  • Ciliary body
• Regenerative Ability of Corneal Endothelial Cells:
  • Present throughout life, and in particular in the limbal area.
• "Crushed Tomato" Symptom:
  • Seen in central retinal vein occlusion
• Location of Crystalline Lens:
  • Posterior chamber of the eye
• Acquired Lens Diseases:
  • Cataract (Lens opacity)
• Sensory Innervation of the Eye:
  • By the trigeminal nerve (N. trigeminalis)
• Beginning of Optic Nerve:
  • Optic nerve disc.
• Endothelial Cell Amount in Cornea:
  • Stable
• Examination of the Eye Drainage Systems:
  • Gonioscopy
• Intraocular Fluid Production:
  • By the ciliary body
• Innervation of Upper Eyelid:
  • Oculomotor nerve (N. oculomotorius)
• Ciliary Body Function:
  • Accommodation of the eye
• Visual Acuity (Snellen Chart):
  • The lowest row visible with acuity of 0.6 corresponds to line 6/10
• Innermost Layer of the Eye:
  • Retina
• Testing for Corneal Disturbances
  • Keratoscopy, gonioscopy, tonometry, perimetry, skiascopy

Other Eye Conditions and Procedures

• Aphakia
  • Absence of a lens
• Determination of Sequence of Examinations:
  • Gonioscopy (Anterior chamber angle), Ophthalmoscopy (Fundus), Strabometry (Deviation angle), Keratometry (Cornea shape and curvature)
• Location of Lamina Cribrosa:
  • Retina
• Normal Central Vision:
  • 20/20 (or 6/6)
• Blind Spot Location:
  • Medial to the fixation point, by roughly 15 degrees.
• Highest Visual Acuity Location:
  • Fovea centralis
• Most Dangerous Complication of Cellulitis:
  • Cerebral involvement.
• Examination of Binocularity:
  • Worth test
• Secretion of Tears (Lacrima):
  • Lacrimal glands
• Scotopic Vision Basis:
  • Rods
• Visual Field Examination Methods:
  • Perimetry, ophthalmoscopy, with perimeter
• Color Vision Method:
  • Using the 4-point apparatus, Rabkin tables, Golovin-Sivtsev schedule, perimeter
• Retinal Color Vision Cells:
  • Cones
• Advantages of Binocular Vision:
  • Expanded visual field, controlled intraocular pressure, increased visual acuity, relaxed accommodation.
• Types of Astigmatism Combinations:
  • Simple (same type, both meridians), compound (different types, both meridians), mixed (different types, separate meridians.)
• Choroid Nutriment
  • From the posterior ciliary arteries

Additional Information

• Eye Structures and Function:
  • The cornea is thinned in keratoglobus and keratoconus
  • Normal visual acuity at a distance of 0.5 meters corresponds to a reading of 1/10 (or 0,1) using a Snellen chart.
  • The ciliary body is provided with blood by the short posterior ciliary arteries
  • Normal intraocular pressure is 9-21 mm Hg (measured using a tonometer, such as in the case of the Machlakov tonometer)

Test your knowledge on eye anatomy, functions, and related conditions with this comprehensive quiz. From understanding the structures of the eye to recognizing symptoms of eye diseases, this quiz covers essential topics in ocular health. Challenge yourself and enhance your understanding of vision sciences.