If one's glasses are dirty, one cannot see properly. In the same way, by being Gurudev's glasses let us clean the dirt in ourselves first. This will make one quite pure. One must feel that his X'ray eyes would see the slightest dirt in ourselves and therefore the necessity of self-cleansing. It is not the glasses that see but the eyes.
Glasses are only an aid.
If one is Gurudev's glasses one must see things as he sees. One must adjust one's vision according to his. In this Bhava one is in Gurudev's company for the greater part of the time as the glasses are in use for a long time and by this time one has raised oneself to that stage as to be in Sattvic mood for the greater period than in the beginning. When one reaches nearer to Gurudev's heart, I think life's Sadhana is over. It is at this stage that Gurudev's real blessings will grace us.