Binocular Vision
Test | Expected Values |
---|---|
Near Cover Test | Ortho - 6XP |
NPC | 5/7cm Near | 7/10cm Distance |
Vergence Facility (3BI/12BO) | 15 cycles/min |
Positive Fusional Vergence | 17/21/11 |
Negative Fusional Vergence | 13/21/13 |
Positive Fusional Reserve (Blur/Break/Recovery) | 7-11 / 15-23 / 8-12 △ |
Negative Fusional Reserve (Blur/Break/Recovery) | x / 5-9 / 3-5 △ |
Amplitude of Accommodation | Minimum: 15 - (¼)Age |
Lag of Accommodation | +0.25 to +0.75 |
Positive Relative Accommodation | -2.37 (±1.00) |
Negative Relative Accommodation | +2.00 (±0.50) |
ACA | 4/1 △ |
Condition | Cover Test | NPC | Vergence Facility | Vergence Amplitude | Binocular Acc. Facility | Monocular Acc. Facility | NRA/PRA | MEM | Accomodative Amplitude |
---|---|---|---|---|---|---|---|---|---|
Basic Exophoria | Exo, D=N | Normal | Low BO @ D&N | Low BO @ D&N | Fails (+) | Normal | Low NRA | Low | Normal |
Basic Esophoria | Eso, D=N | Normal | Low BI @ D&N | Low BI @ D&N | Fails (-) | Normal | Low PRA | High | Normal |
Accommodative Insufficiency | No Pattern | Normal | Normal | Normal | Fails (-) | Fails (-) | Low PRA | High | Low |
Divergence Insufficiency | Eso, >D | Normal | Low BI @ D | Normal | Normal | Normal | Normal | Normal | Normal |
Convergence Insufficiency | Exo, >N | Receded | Low BO | Low BO | Fails (+) | Normal | Low NRA | Low | Normal |
Convergence Excess | Eso, >N | Normal | Low BI | Normal | Fails (-) | Normal | Low PRA | High | Normal |
Fusional Vergence Dysfunction | Low Eso or Exo | Normal | Low BI & BO | Normal | Fails (+) & (-) | Normal | Low NRA/PRA | Normal | Normal |
Divergence Excess | Exo, >D | Normal | Low BO @ D | Low BO @ D | Normal | Normal | Normal | Normal | Normal |