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Low accommodative amplitude
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Low AC/A
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High Lag
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Fails -2.00 (OD, OS, OU)
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Low PRA
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Eso at near
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High AC/A
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Low Lag (or lead)
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Fails +2.00 (OD, OS, OU)
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Low NRA
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Eso at near
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Fails/difficulty +2.00 & -2.00 (OD, OS, OU)
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Low NRA & PRA
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Eso similar dist & near
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Reduced BI (dist & near)
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Eso fd (dist & near)
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Normal AC/A
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Large Lag
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Low PRA
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Fail -2.00 OU
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Near Eso > Dist Eso high tonic vergence
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^Near Eso, Dist Ortho normal tonic vergence
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Reduced NBI (DBI may be reduced), BI facility (near)
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Eso fd
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Moderate hyperopia
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High AC/A
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High Lag
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Low PRA
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Difficulty/fails -2.00 OU
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Near Exo > Dist Exo low tonic vergence
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Dist Ortho, Near Exo normal tonic vergence
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Reduced NPC
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Reduced NBO and BO facility
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Low AC/A
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Small lag (or plano)
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Low NRA
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Difficulty +2.00 OU
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Exo fd
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Near Exo > Dist Exo
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Receded NPC (noncom. & accom. target about the same)
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Reduced PFV (or BO) at near
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Reduced PRA
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Fails -2.00 OU, Low OD, OS
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Low amplitude
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Large lag (>+1.00)
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Additional plus at near may reduced exo &/or improve NPC
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Dist Eso > Near Eso high tonic vergence
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Reduced DBI, BI facility (dist)
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Eso fd at distance
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Low AC/A
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Dist Exo > Near Exo low tonic vergence (tropia or phoria)
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Normal or limited DBI (adequate DBO)
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High AC/A
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Exo similar dist & near
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Reduced BO (dist & near)
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Possibly receded NPC
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Redced BO facility (dist & near)
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Exo fd (dist & near)
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Normal AC/A
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Small Lag
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Low NRA
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Fail +2.00 OU
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Reduced BI & BO dist and near
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Reduced vergence facility (BO &/or BI at DV &/or NV)
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NRA & PRA may be low
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May fail/difficulty binocular accomm. facility
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Normal AC/A
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
