VISION

THE _______ CHART IS USED TO MEASURE VISUAL ACUITY

Snellen

THE ABILITY OF THE EYE TO FOCUS DIFFERENTLY FOR OBJECTS OF NEAR VISION & 6m (20 FEET), IS CALLED?

accomodation

THE _______ CHART WAS USED IN THE LAB TO SHOW IRREGULARITIES IN CURVATURE OF THE LENS/ CORNEA

astigmatism

_______ IS BLURRED VISION CAUSED BY IRREGULARITIES IN THE CURVATURE OF THE LENS OR CORNEA

astigmatism

A TEST RESULT OF 20/15 IS BETTER OR WORSE THAN NORMAL VISION?

better than normal

PREDATORS HAVE WHAT TYPE OF VISION?

binocular vision

NAME ONE DEPOLARIZING CELL FOUND IN THE SENSORY LAYER/ TUNIC

bipolar, ganglion, rods & cones

WHAT IS THE FUNCTION OF LYSOZYME?

cleans and protects the eye

THE _______ LENS IS USED TO CORRECT THE MYOPIC/ NEARSIGHTED EYE

concave

WHICH SPECIFIC TYPE OF LENS IS USED TO CORRECT MYOPIA?

concave lens

THE PHOTORECEPTOR CELLS CALLED _______ ARE RESPONSIBLE FOR COLOR VISION

cones

WHAT DO THE EXTRINSIC MUSCLES ALLOW THE EYE TO DO?

control eye movement and make it possible for the eye to follow a moving object

WHAT IS THE MEDIAL ROTATION OF THE EYES CALLED?

convergence

THE _______ LENS IS USED TO CORRECT THE HYPEROPIC/ FARSIGHTED EYE

convex

WHICH SPECIFIC TYPE OF LENS IS USED TO CORRECT HYPEROPIA?

convex lenses

WHAT ARE THE TEARS COMPRISED OF?

diluted salt solution

WHAT IS THE CAUSE OF PRESBYOPIA?

elasticity of lens decreases dramatically with age

DEFINE HYPEROPIA

farsightedness

FIBERS FROM WHICH EYE(S) ARE FOUND IN THE LEFT OPTIC NERVE?

fibers from the left eye

FIBERS FROM WHICH EYE(S) IS FOUND IN THE RIGHT OPTIC NERVE?

fibers from the right eye

WHAT EYE DISORDER IS CAUSED BY COMPRESSION OF RETINA / OPTIC NERVE

glaucoma

NAME ONE OF THE NON‐DEPOLARIZING SUPPORTING CELLS FOUND IN THE RETINA

horizontal cells, amacrine cells

WHAT IS A STY?

inflammation of one ciliary gland or small oily gland

WHAT IS CONJUNCTIVITIS?

inflammation of the conjunctiva

WHAT CAUSES GLAUCOMA?

interference with drainage of aqueous fluid

NAME ONE OF THE 2 GROUPS OF MUSCLES RESPONSIBLE FOR EYE REFLEXES

intrinsic and extrinsic muscles

_______ IS THE GENERAL NAME OF THE INVOLUNTARY MUSCLES THAT ARE RESPONSIBLE FOR CHANGES IN BOTH THE LENS CURVATURE AND PUPILLARY SIZE

intrinsic muscles

NAME ONE CONSTITUENT OF THE LACRIMAL APPARATUS

lacrimal gland, lacrimal canaliculi, lacrimal sac, nasolacrimal duct

OPTIC TRACT FIBERS WILL SYNAPSE WITH WHAT PART OF THE BRAIN?

lateral geniculate body

DEFINE: CATARACTS

lens becomes hard and opaque and causes vision to be hazy or entirely obstructed

DEFINE: PRESBYOPIA

loss of elasticity of the lens overtime which results in decreased ability to focus on near objects

WHAT IS THE FUNCTION OF THE CILIARY GLANDS?

lubricate the eyeball

FIBERS FROM WHICH EYE(S) ARE FOUND IN THE LEFT OPTIC TRACT?

medial fibers from right eye, lateral fibers from left eye

FIBERS FROM WHICH EYE(S) ARE FOUND IN THE RIGHT OPTIC TRACT?

medial fibers from the left eye and lateral fibers from the right eye

WHICH FIBERS COMING FROM THE EYE(s) CROSS IN THE OPTIC CHIASMA?

medial optic fibers

CLOSER IN CHILDREN AND YOUNG ADULTS AND FARTHER WITH OLD AGE, THE _______ IS THE CLOSEST DISTANCE AN OBJECT CAN BE FOCUSED ON CLEARLY

near point of accomodation

WHAT DO THE TARSAL GLANDS PRODUCE?

oily substance

FIBERS/ AXONS FROM THE LATERAL GENICULATE NUCLEUS WILL BRANCH INTO THE _______

optic radiation

PREYS TEND TO HAVE WHAT TYPE OF VISION?

panoramic vision

THE _______ REFLEX IS OBSERVED BY SUDDEN ILLUMINATION OF THE RETINA BY BRIGHT LIGHT CAUSING THE PUPIL TO CONSTRICT IN DIRECT PROPORTION TO LIGHT INTENSITY

photopupillary reflex

IN THE ACCOMMODATION PUPILLARY REFLEX TEST DONE IN THE LAB WHAT WAS THE REACTION OF LOOKING AND FOCUSING AT A DISTANT OBJECT AND THEN FOCUSING AT A VERY CLOSE OBJECT BY THE PUPILS?

pupil dilation followed by pupil constriction

WHAT IS THE FUNCTION OF THE SCLERAL VENOUS SINUS?

reabsorbs aqueous humor

WHAT ACCOMPANIES CONJUNCTIVITIS IN THE EYEBALL?

redness of the eyes

WHAT IS THE BENDING OF LIGHT UPON PASSING FROM ONE SUBSTANCE TO ANOTHER CALLED?

refraction

LIGHT BENDING POWER OF THE CORNEA, LENS OR VITREOUS HUMOR IS CALLED ITS _______

refractive index

IN THE CONVERGENCE REFLEX TEST DONE IN THE LAB WHAT WAS THE REACTION OF LOOKING AND FOCUSING AT A DISTANT OBJECT AND THEN FOCUSING AT A VERY CLOSE OBJECT BY THE EYES?

regular eye movement followed by medial eye movement

NAME ONE PART OF THE SENSORY TUNIC/ LAYER OF THE EYE

retina

THE _______ IS THE PART OF THE EYE THAT IS EXAMINED WHEN USING THE OPTHALMASCOPE

retina

THE PHOTORECEPTOR CELLS CALLED _______ ARE RESPONSIBLE FOR DIM LIGHT VISION

rods

NAME ONE OF THE COMPONENTS OF THE OUTER FIBROUS TUNIC/ LAYER OF THE EYE

sclera, cornea

WHAT IS THE FUNCTION OF THE LACRIMAL SAC?

storage, drains tears

WHAT DO THE LACRIMAL GLANDS PRODUCE?

tears

DEFINE ACCOMMODATION

the ability of the eye to focus on objects closer than 20 feet

NAME ONE PART OF THE VASCULAR TUNIC/ LAYER OF THE EYE

uvea, choroid, ciliary body, ciliary muscle

THE SNELLEN CHART WAS USED TO TEST

visual acuity / sharpness of vision

THE BRANCHED OPTIC RADIATIONS WILL TERMINATE IN WHICH REGION OF THE BRAIN?

visual cortex

A TEST RESULT OF 20/40 IS BETTER OR WORSE THAN NORMAL VISION?

worse than normal

_______ IS THE SPECIFIC NAME OF THE COLOR PLATES USED TO TEST FOR COLOR BLINDNESS IN LAB.

Ishihara plates test