fasfasf Flashcards
(29 cards)
Plus lens close to the nasal is
base out
plus lens away from the nasal is
base in
plus lens view above the optical center is
base down
plus lens view below the optical center is
Base up
minus lens close to the nasal is
base in
minus lens away from the nasal is
base out
minus lens above the optical center is
base up
minus lens below the optical center is
base down
base cancelling situations
Base Up and Base Up
Base Down and Base Down
Base In and Base Out
Base Compounding situations
Base Up and Base Down
Base In and Base In
Base Out and Base Out
what is strabismus(heterotropia)
When one eye is not aligned with the
The other eye, causing the other eye to look in a different direction
What would be the result of Strabismus (heterotropia)
Diplopia or Double Vision – since
Two objects are imaged onto the maculas
of both eyes
What is amblyopia (LAZY EYE)
When an eye is suppressed (turned off) for too long, the visual acuity in the “Lazy eye” is no longer good. Due to the lack of use, the lazy eye shuts down and decreases the patient’s vision in that eye
The Angle of Deviation of strabismus is measured in
Prism Diopters
what percentage does strabismus affect children
2 percent
MOST COMMON TYPE OF
STRABISMUS
Esotropia, Exotropia
how do you correct strabismus
Vision Therapy,Surgical Correction
left eye esotropia is turned
Inward
what is Adverse prism
Stimulate eye muscle to make it work harder, used to strengthen weak muscle
What was the the first fresnel prism used
Cordouan lighthouse
Who made Fresnel prism
French physicist, Augusti-
Jean Fresne
who came up with the metric system
C.F. Prentice in 1890
Esophoria or Exophoria
tendency for the eye to turn
Esotropia or Exotropia
a fixed turning of the eye
