| 摘要 |
An optometric apparatus is provided to visually illustrate a use method of a corrective lens by using a display of a clear visual region. An optometric apparatus includes an obtaining unit, a calculating unit, and a display unit(21). The obtaining unit obtains a control force based on an operation distance in measuring a far-sighted perfect correction power, a far-sighted prescription correction power, a power addition, a near-sighted power, and a perihelion distance. The calculating unit calculates a clear visual region corrected by at least one lens among a far-sighted single focus lens, a near-sighted single focus lens, and a progressive lens based on an obtained data. The display unit displays the clear visual region calculated by the calculating unit on a screen by a graphic.
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