PRELIM Flashcards
Purpose of case history
Tentative diagnosis
Purpose of specific tests
Interpretation
Purpose of diagnosis
Management plan
Process of obtaining patient information regarding px’s visual and ocular problems
Case history
It allows for an organized discussion with patient
Case history
Time for px-examiner to get acquainted
Case history
Significance of case history
- To determine the nature of patient’s problem on patient’s visual and ocular health
- To use patient’s history and physical findings to form initial impression or differential diagnosis
- To gain baseline data to aid in accurate examination of patients in future
- To form good rapport with patient
Methods of history taking
Interview
Questionnaire
Combination of 1 and 2
Factors to observe during the history taking
Seating and body posture
Eye contact
Communication
Listening
Use of verbal and non-verbal reactions
Silence
Empathy and warmth
Basic components of case history: PATIENT PROFILE
Name
Age
Address
Occupation and hobby
Gender
Education
-for identification
-for communication
-forming a rapport w patient
-record maintenance
-psychological benefit
Name
-consider the condition of the patient that can possible affect eye health
-to determine the flow of examination (geriatric or pediatric)
-to adjusr your communication towrds the patient (use of basic words)
Age
diagnosis: prediction of different dse in both sexes
Gender
-predilection of diseases in different occupations
-type of lenses/ frame to be given
-amount og correction
Occupation and hobby
Primary concern or stimulus which primarily drives the px to seek visual and ocular assitance
Chief of complaint
Uncomfortable, painful, and irritable vision or a group of symptoms arising from any form of functional eye strain
Asthenopia
FOLDARQ
Frequency
Onset
Location
Duration
Associated symptoms
Relief
Quality
Basic components of case history
- patient profile
- chief complaunt FOLDARQ + signs and sympoms
- Occupational visual reqirements
- Recreational visual requirements + social visual requirements
- visual and ocular history
- general health history
- allergies to medications
- medication usage
- family eye and medical histories
abrupt on and off, more one CNS WHERE MYELIN SHEATH DETERIORATES. Myelin sheath is for communication.
Multiple sclerosis
inflammation of the blood vessels. blockage of blood in the central arteries in the retina. if may block sa blood flow ng mata, on and off ang vision sa patient.
Temporal arteritis
cholesterol plaque that blocks the arteries causes black out.
Carotid artery occlusive dse
clumping of the vitreous which could pull the retina.
Posterior vitreous detachment
light flashes can be experienced by patients with migraine with aura.
Migraine
Sensory information
Afferent
Motor information
Efferent
Visual, auditory, somatosensory, chemoreceptors
Afferent
Outside stimuli to the CNS
Afferent
From stimuli, processed by CNS, to the efferent
Efferent
Contraction of skeletal muscle, movement through somatic NS, contraction of smooth muscle
Efferent
2 types of cells in NS
Neurons
Synapses
Parts of the neurons
Cell body
Dendrites
Axon
Axon hillock
Types of cell bodies
Nucleus
Ganglion
Nerve fibers that receive signals from other neurons
Dendrites
Nerve fibers that send signals along to other neurons
Axon
Fatty protective sheath
Myelin sheath
Two neurons coming together
Synapse
A type of glial cells that are only present in the CNS
Astrocytes
Give structural and metabolic support to neurons
Astrocytes
Consists of tight junctions that connects the endothelial cells that line the capillaries in the brain
Blood brain barrier
Located within the cranial cavity and protected by the skull, meninges and cerebrospinal fluid
Brain
Weight of male brain
1345 gms
Weight of female brain
1245 gms
Distinguishing factors of the brain
Gyri
Sulci
Fissures
Convultions of the brain (big wrinkles)
Gyri
Shallow grooves on the surface of the brain
Sulci
Deep grooves at the brain
Fissures
Located within the spinal cavity and protected by the vertebral/spinal column, meninges, and CSF
Spinal cord
Has voluntary innervation
Somatic nervous system
Has involuntary innervation
Autonomic nervous system
Skeletal system
SNS
The heart, intestines, liver, endocrine
ANS
It is where the pre and post ganglionic fibers synapse not a center of reflex action
Autonomic ganglia
More on relax, chill when reading, the eye accommodate
Parasympathetic outflow
Fight or flight
Sympathetic outflow
Components that make up the visual pathway (in order)
Retina
Optic nerve
Optic chiasm
Optic tract
Lateral geniculate body
Optic radations
Visual cortex
Pupillary reflex pathway
Retina
Optic nerve
Optic tract
Pre-tectal nucleus
Edinger westphal nucleus
Preganglionic parasympathetic fibers
Ciliary ganglion
Postganglionic parasympathetic fibers
Sphinter pupillae
Cross diagram that shows which muscle move when the eye moves
Benzene ring
One eye
Duction
both eyes. synchronous and symmetric movement of both eyes in the same direction
Version
synchronous and symmetric movement of both eyes in the opposite direction
Vergence
Movement of one eye inwards
Adduction
Movement of one eye outwards
Abduction
Movement of one eye upwards
Supraduction/anaduction/sursumduction
Infraduction/kataduction/deosursumduction
Movement of one eye downwards
Exycloduction
Movement of the vertical corneal meridian of one eye outward
Inclycloduction
Movement of the vertical corneal meridian of one eye inwards
Both eyes to the right
Dextroversion
Levoversion
Both eyes to the left
Both eyes looking upward
Supraversion
Both eyes looking downward
Infraversion
Both eyes to the right and up
Dextrosupraversion
Dextroinfraversion
Both eyes to the right and down
Both eyes to the left and up
Levosupraversion
Both eyes to the left and down
Levoinfraversion
Movement of both eyes inward
Convergence
Movement of both eyes outward
Divergence
It is positive that the right things are looking up, the right eye turn up and left eye turn down
Positive vertical divergence
Right eye turns down, left eye turns up
Negative vertical divergence
Primary muscle or main muscle
Agonist
Opposing muscle
Antagonist
Helping muscle or prime mover muscle
Synergist
The muscle that is the same with the agonist
Yoke muscle
Three distinct type of organs
Receptors
Physiological connectors
Effectors
Organs in which the irritability to environmental changes or stimuli is very highly developed
Receptors
Any structure capable or reacting when stimulated
Receptors
Mechanism of vision
Physical process
Photo-chemical process
Neuro-muscular process
Psychological process
Impinging of an accident ray of light upon the eye and its transmission through various transparent media
Physical process
Transparent media of the eye
Precorneal tear film
Cornea
Aqueous humor
Crystalline lens
Vitreous humor
Retina
Layers of the retina
RPE
Photoreceptors
External limiting membrane
Outer nuclear layer
Fibers of henle
Outer plexiform layer
Inner nuclear layer
Inner plexiform layer
Ganglion cell layer
Nerve fiber layer
Internal limiting membrane
Involves in transduction of light meaning the change of sensory stimulus to form o another
Photo-chemical process
Generation of the nerve impulse in the retina and its transmission by a chan of neuron to CNS
Neuro-muscular process
Primary visual cortex of the brain
Occipital lobe
Occipital lobe deals with what aspects of vision?
Distance
Depth perception
Color determination
Object recognition
Movement
Face recognition
Memory information
A part of the cerebral cortex that plays an important role in processing visual information
Visual cortex
Flow of visual information
V1: primary visual cortex
V2: recognition
V3: identification
V4: categorization of the image
V5: spatial attention
Relates to spatial understanding
Upper dorsal stream
Helps identify, recognize, and categorize what we see
Lower dorsal stream
Test for red-green color deficiency
Ishihara color test
The ability of the px to recognize the figure in contrast with the bg
Minimum visible/detection acuity
The ability of the individual to recognize two lines are separated
Minimum separable/resolution acuity
The threshold of the identification of letters
Minimum recognizable
The smallest angle subtended at the nodal point, the center of the entrance pupil
Minimum separable angle