  The potential of the gravitational microlensing inside our Galaxy for testing
the Einstein formula for the gravitational light deflection is discussed. For
this purpose, the lens mapping is modified by introducing parameter eps, which
characterizes the deviation from this formula. An example of such deviation
described by a simple power law is analyzed. We formed a sample of 100
microlensing light curves using the data of the Optical Gravitational Lensing
Experiment (OGLE) for 2018. The resulting eps value does not contradict the
General Relativity within 1 percent errors.
