Muscles blown out from Botox?

Hi! Good results from Btx for 2 years. A nurse injector at derm office recommended I receive3 units under my eyes for wrinkles. Massive swelling and wrinkling followed. I’m over 6 months out with sig swelling under one eye. 3 derms and one ophthalmologist have no explanation. A plas surgeon said the eye muscles might have been ‘blown out’ from too much btx for me. However, second opinion at derm said no way bc the muscles are too deep to be affected this way. Does the blown out make sense?