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  Indian J Med Microbiol
 

Figure 2: Relationship between prism diopters and degrees. For angles smaller than 45° (or 100Δ), the number of prism diopters per degree is about 2. For angles larger than 45° (or 100Δ), this approximation becomes invalid, and as one approaches 90°, the number of prism diopters per degree goes up to infinity

Figure 2: Relationship between prism diopters and degrees. For angles smaller than 45° (or 100<sup>Δ</sup>), the number of prism diopters per degree is about 2. For angles larger than 45° (or 100<sup>Δ</sup>), this approximation becomes invalid, and as one approaches 90°, the number of prism diopters per degree goes up to infinity