Accommmodation Flashcards
1
Q
Hofstetter’s formula
A
25-0.4age = max
18.5 - 0.3age = avg
15 - 0.25age = min
2
Q
Accomm insufficiency
A
AoA < min accom Blurred vision/frontal HAs Near xop -> eso if Px tries exert more accom Tx: hyperopic rx/low add Pen-nose exercise
3
Q
Accomm fatigue
A
Similar Sx to AI but more transient
4
Q
Accom spasm
A
Accom excess
Constant ciliary contraction
Causes: Uncorrected hyperopia / prolonged near work/brain lesions/MS/meningitis/head trauma
Sx: pseudomyopia/HAs/ocular discomfort/SOT/miosis
Tx: gradual hyperopia correction
Orthotic exercises
5
Q
Accom inertia
A
More common 30+yo
Difficult switching from DV-NV-DV
