It has been generally written that Murad intended that the same punishment should be meted out to Andronicus. For the sake of appearances, he did order John Palaeologos to have his son’s eyes put out. But there was no order for execution. John Palaeologos consented to the blinding of Andronicus and of his grandson and namesake, who was only five years old.[349] The operation was not successfully performed. Both Andronicus and his son, even if temporarily blinded, recovered their eyesight. Some have explained this by stating that they were healed by a Genoese physician.[350] There is recorded a beautiful story that Andronicus owed the restoration of his sight to the empress, his mother, who visited him daily in the tower of Anemas and was prodigal in her efforts to heal him. He was in despair for some months, until one day he saw a lizard climbing on a wall.[351] If Murad had really desired the death or total blindness of Andronicus, he could easily have secured this result. While punishing his own son, however, he saw to it that Andronicus escaped the consequences of the same crime. Here we have a revelation of the far-sightedness and cold-bloodedness of Murad. He killed his own son, because he feared his rivalry. He spared the son of John Palaeologos in order to perpetuate the rivalry between the emperor and his son. To have killed or incapacitated Andronicus would have been from his view-point an act of folly rather than of justice; for Andronicus, brilliant, adventurous, magnetic, was at the same time a worthy exemplar of the name he bore, a name that stood for the acme of unscrupulous conduct and contempt for ties of blood. Murad had only to wait, and history would repeat itself. Internal dissensions in the family of the Palaeologi had made the fortunes of Orkhan. Murad had no intention of getting rid of Andronicus, in whom he saw the means of still further enmeshing the Byzantine emperors.[352] The Byzantine historians record for the year 1374 another event, which illustrates the power of Murad over John Palaeologos. Manuel, who had resumed the government of Salonika, tried to induce the inhabitants of Serres to recover their liberty by massacring the Ottoman garrison and the Ottoman colonists. Serres, in spite of its prominent place in recent Serbian history, was regarded by the Byzantines (as it still is by the Greeks of to-day) as a city of their compatriots. We have no means of establishing the grounds upon which Manuel believed it possible to restore the Byzantine authority in the country between the Struma and the Vardar. The sequel indicates that it was a wild and unfounded hope of a desperate man, and shows how thoroughly in two years the Osmanlis had become masters of the situation in Macedonia.