Abstract
The purpose of the paper is to draw attention to the problems emerged in optical astrometry. It had to be developed by specialists in a new-born branch of radio physics named radio astrometry. The methods of the science with ancient origin were not familiar to them. The first step of reforms was the decision of International Astronomical Union about replacement of the International optical reference system by the radio reference system ICRS (ICRF). The decision retarded the development not only of fundamental astrometry and related sciences, but of astrophysics as well. 19 years passed after the decision, but radio frame (ICRF) is not used for reference either in space or in ground-based observations, or in geodesy as a reference for coordinates on Earth. The arguments of those who lobbied for the transition to radio sources remain unconfirmed
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