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A new unity for angular measurements in strabismus

For instance, if P=100 Δ (=45º), U=82.843 Λ. If U=100 Λ (=53.130º), P=133.333 Δ. But if U=200 Λ (=90º), P=∞. And if U=300^ (=112.62º), P=-240 Δ. Table 1 ...