How to eliminate the reflection on glasses in portrait photography?

Using reflected light as the main light source for dimming can easily remove the reflection of glasses.

Use ordinary glasses. This kind of glasses will only reflect light when the characters turn their heads, just flash by. If an actor has vision problems, he can wear contact lenses first and then plain glasses to shoot. Use vision correction glasses with anti-reflective coating. It can prevent the appearance of reflection and is the ultimate weapon to solve the problem of reflection.