Eyes Flashcards
Transmits visual stimuli to the brain for interpretation and, in doing so, functions as the organ of vision?
Eye
Is located in the eye orbit, a round, bony hollow formed by several different bones of the skull?
Eyeball
External Structures of the eye?
Eyelids
Eyelashes
Conjunctiva
Lacrimal Apparatus
Extraocular Muscles
Are two movable structures composed of skin and two types of muscle?
Eyelids
Are projections of stiff hair curving outward along the margins of the eyelids?
Eyelashes
Is a thin, transparent, continuous membrane that is divided into two portions?
Conjunctiva
Two portions of conjunctiva?
*Palpebral
*Bulbar
Consists of glands and ducts that lubricates the eyes?
Lacrimal Apparatus
Are the six muscles attached to the outer surface of the eyeball?
Extraocular Muscles
Three cranial nerves responsible for the eyes?
Oculomotor (III)
Trochlear (IV)
Abducens (VI)
Internal structures of the eye?
Eyeball
Iris
Lens
Choroid Layer
Retina
Optic Disk
Retinal Vessel
Is a circular disc of muscle containing pigments that determine eye color?
Iris
Is a biconcave, transparent, avascular, encapsulated structure located immediately posterior to iris?
Lens
Contains the vascularity necessary to provide nourishment to the inner aspect of the eye?
Choroid Layer
Extends only to ciliary body anteriorly. It receives visual stimuli and sends it to the brain?
Retina
Is a cream-colored, circular area located on the retina toward the medial or nasal side of the eye?
Optic Disc
Can be readily viewed with the aid of an ophthalmoscope?
Retinal Vessels
Refers to what a person sees with one eye?
Visual Fields
Occurs as light rays strike the retina, where they are transformed into nerve impulses conducted to the brain through optic nerve, and interpreted?
Visual Perception
Two types of visual reflexes?
Pupillary Light Reflex
Accomodation
Causes pupils to constrict immediately when exposed to bright light?
Pupillary Light Reflex
Is a functional reflex allowing the eyes to focus on a near object?
Accomodation
Legal blindness visual acuity?
20/200
Spots and floaters are common in clients with ____?
Myopia
A blind spot?
Scotoma
Intermittent blind spots may be associated with vascular spasms?
Opthalmic Migraines
Seeing halos around lights is associated with _____?
Narrow-Angle Glaucoma
Double vision is called?
Diplopia
Excessive tearing?
Epiphora
Term used in measuring eye pressure?
Tanometry
Macular degeneration test?
Amsler Test
Normal eye pressure range?
10-21 mmHg
Many eye disorders have familial tendencies, some examples are?
Glaucoma
Refraction Errors
Allergies
Macular Degeneration
Exposure to ultraviolet radiation puts the client at risk for the development of ____?
Cataracts
Is a group of eye diseases that damages the optic nerve, often caused by abnormally high pressure within the eye?
Glaucoma
Two most common glaucoma?
Open-angle Glaucoma
Acute-Angle Glaucoma
Is a major cause of visual impairment that affects the macula portion of the retina?
AMD
Two types of AMD?
Dry
Wet
Which are often preventable, are leading causes of blindness today?
Cataracts
Are a clouding of the usually clear lens of the eye?
Cataracts
Causes deterioration of the macula portion of the retina?
AMD
Used to test distant visual acuity?
Snellen Chart