CO Optical Devices & Low Vision Rehabilitation Flashcards
6 cards from real CO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CO Optical Devices & Low Vision Rehabilitation flashcards as text
According to the CITT study, the most effective evidence-based treatment for convergence insufficiency is:
Answer: Office-based vision therapy combined with home exercises
The CITT (Convergence Insufficiency Treatment Trial) demonstrated that office-based vision therapy with home reinforcement is superior to home-based exercises alone or prism glasses.
The purpose of a Bangerter foil in amblyopia management is to:
Answer: Apply graded blur to the fellow eye as a penalization method
Bangerter foils are translucent filters applied to the fellow eye's spectacle lens to penalize it with graded blur, encouraging preferential use of the amblyopic eye.
Which test uses a graded prism bar to measure the fusional vergence range?
Answer: Prism bar vergence testing
Prism bar vergence testing uses a prism bar with increasing prism values to measure positive and negative fusional vergence amplitudes.
In low vision rehabilitation, 'relative distance magnification' refers to:
Answer: Moving the object closer to the eye to increase its retinal image size
Relative distance magnification refers to bringing an object closer to the eye to enlarge its retinal image size without using any optical device.
Base-in prisms are prescribed to relieve symptoms associated with:
Answer: Convergence insufficiency or exophoria at near
Base-in prisms reduce the convergence demand at near and are prescribed to relieve asthenopic symptoms in patients with convergence insufficiency or exophoria.
The red filter (or Bagolini striated lens) test in amblyopia management is used to assess:
Answer: Foveal fixation quality, retinal correspondence, and suppression
The red filter or Bagolini lens test assesses fixation quality, anomalous retinal correspondence, and the presence of suppression in patients with amblyopia or strabismus.