Comparison of X-ray and V-band luminosities and efficiencies for pulsars of different characteristic age τ detected in both spectral domains. Different pulsars are marked by different symbols. The tentative PSR J1357 − 642 optical luminosity and efficiency are shown by a filled square. As seen, both match the general dependences of the pulsar luminosity and efficiency on age, and display an efficiency minimum near the Vela age.