Accommodative and Vergence Dysfunction Flashcards
Tonic esophoria
is high when measured at distance but less at near.
divergence insufficiency
High tonic esophoria at
distance, a similar degree of esophoria at near, and a normal AC/A ratio.
basic esophoria
Has different phorias in far and near.
mixed phoria
most common causes of newly acquired vertical diplopia or
asthenopia with vertical deviation is longstanding, decompensated, fourth
nerve palsy, which results in superior oblique paresis.
vertical heterotropias
Patients with fusional vergence insufficiency often have normal phorias and AC/A ratios but
reduced fusional vergence amplitudes.
fusional vergence dysfunction
Can be described as esophoria or esotropia at far greater than
the near deviation by at least 10 prism diopters
divergence insufficiency
Can be described as esophoria or esotropia at near greater
than the far deviation by at least 10 prism diopters
convergence excess
Deviation of similar
magnitude at both distance and near
basic exophoria
Can be described as exophoria or exotropia at far greater than
the near deviation by at least 10 prism diopters
divergence exess
A rare condition in which the accommodative system fails to
respond to any stimulus.
paralysis of accommodation
Also called as accommodative inertia
accommodative infacility
Can be described as exophoria or exotropia at near greater
than the far deviation by at least 10 prism diopters
convergence insufficiency
Amplitude of accommodation is lower
than the expected AA for the patient’s age and is not due to
sclerosis of the crystalline lens.
accommodative insufficiency
It is a condition in which the AA is normal, but fatigue occurs
with repeated accommodative stimulation.
ill-sustained accommodation
A rare condition in which the accommodative system fails to
respond to any stimulus.
paralysis accommodation
