Research published in 1994 (“Experimental studies on the influence of millimeter radiation on light transmission through the lens” Klin Oczna. 1994 Aug-Sep; 96(8-9):257-9) showed that rats exposed to millimetre wave radiation for only 56 days developed changes in the lens of their eyes.
The wave length used was 5.6 mm (53 GHz). The power output was 10 milliwatts/cm2 (100,000,000 microwatts/m2).
The authors, Prost M, Olchowik G, Hautz W, Gaweda R, conclude the abstract for their study by stating that “radiation in millimetre range can induce changes in the lens, predisposing to cataract development.”