BASIC EYE EXAMINATION Flashcards
BASIC EYE EXAMINATION
List 8 accordingly
•External Examination- Pentorch
• Visual Acuity
• Pupil Function
• Ophthalmoscopy
• Ocular motility
• Visual Field testing(Confrontation)
• Intraocular pressure
• Slit-Lamp biomicroscopy examination
External Eye Exmination-
• Inspection of __________,_________, and _________
• Inspection of __________ and _________
• Inspection of __________,_________,_______
eye-lids, surrounding tissues
& Palpebral fissures
conjunctiva & sclera
fornices, Cornea & iris
VISUAL ACUITY
• The eye’s ability to _______________ (the quantitative measure of the eye’s ability to see an in-focus image at a certain distance)
detect fine details
Visual Acuity
Ability to resolve a spatial pattern separated by a visual angle of —————— (_________ or __________).
one minute of arc
6/6 or 20/20
•
If one can see at a distance of 20 ft an object that normally can be seen at 20ft then one has _______ vision.
If one can see 20ft what a normal person can see at 40ft then one has _______ vision.
If an individual can see at 20ft what a normal person can see at 60ft then the visual acuity is ______
20/20
20/40
20/60.
The 6/6 terminology is more commonly used in Europe and Australia and represents the distance in _______ and often measured with a __________.
meters
SNELLEN CHART
PUPIL FUNCTION
• Inspect Pupil for equal size(______ or less of difference may be normal)
• Regular ______
• Reactivity to light( ________/__________)
1mm
shape
direct/ consensual accommodation
Reporting normal pupil function
Pupils equal and Round : Reactive to Light& Accommodation
• If there is an efferent defect in the left eye, the __________________________
• If there is an afferent defect in the left eye, _______________________________
left pupil will remain dilated regardless of where the light is shining while the right pupil will constrict.
both pupils will dilate when the light is shinning on the left eye, but both will constrict when it is shining on the right eye.
If there is a _______________ with _______ reactivity to light and associated _______________-Horner’s syndrome.
• A __________, ________ that ___________ to light but _____________________- Argyl Robertson Pupil
unilateral small pupil with normal reactivity to light and associated ptosis of upper eye lid
small pupil, irregular that constricts poorly to light but normally to accommodation
Intraocular Pressure(IOP)- Can be measured by __________ devices designed to measure the _______ (and __________ to outflow) of the ________________ from the eye.
There are different devices - __________ or ____________.
tonometry
Outflow; resistance
aqueous humor
applanation or air puff
Diatron tonometry measure IOP through the _________.
eye lid
Ophthalmoscopy –Include the visually magnified inspection of the ________________ and assessment of the quality of the _____________.
• Allows direct assessment of the _______ and other tissue at the back of the eye-best done through ___________ pupil. Room should be darkened and patient looking at far object
internal eye structures
eye’s red Reflex; retina
dilated
Focus in ophthalmoscopy is on the __________ and __________
optic disc and retinal vasculature.
Red reflex, defined as the ________________ through the ophthalmoscope light, is seen when looking at a patient ________ through a direct Ophthalmoscope from a distance of about _______.
reflection of the choroidal vessels
pupil; 50cm
The reduction and absence of red reflex will occur in the presence of:
Partial or total opacities of the media e.g _________,_________/ ___________ collections, partial or total occlusion of the pupils and partial or total _____________.
cornea, anterior chamber/ vitreous
Pupils
retinal detachment
SLIT LAMP BIOMICROSCOPE
•For close inspection of the _______ eye structure and _________
anterior
ocular adnexa.
___________ staining before slit lamp examination may reveal _________ or ______________ infection.
Fluorescein
corneal abrasions
herpes simplex
OCULAR MOTILITY
• Tested when there is __________/__________
• Check for deviation as a result of _________, EOM __________ or _______________ innervating the EOM.
Double Vision/Neurologic Disease.
Strabismus
Dysfunction
Palsy of the cranial nerves
Ocular motility
Slow tracking or “Pursuits” are assessed by the “ ________________ r” test in which the examiner’s finger traces an imaginary “ __________” which touches upon the ______________.
• It tests the EOM- inf, sup, lat, medial recti muscles as well as superior and inferior oblique muscles
follow my finger
double H
eight fields of Gaze.
CONFRONTATIONAL FIELD TEST
• Each eye is tested separately to assess the _____________________.
• Individual occludes one eye while fixated on the examiners’s eye with the non- occluded eye.
extent of the peripheral field
Common problems of the Visual field include :
Mention 4
Scotoma
Hemianopia
Homonymous quadrantanopia
Bitemporal hemianopia
Common problems of the Visual field include
Scotoma(area of ___________ )
Hemianopia( ___________ loss)
Homonymous quadrantanopia( _____________)
Bitemporal hemianopia( ________________)
reduced vision
half of visual field
both eyes involved
both eyes opposite fields