Cytomegalovirus, HCMV, is a herpes type virus carried by most people – like other viruses – without any symptoms.
Eyes can be seriously damaged by the HCMV virus. It can cause a condition called HCMV retinitis which as its worst could lead to blindness.
Ithmid Kohl has been traditionally used as an antimicrobial agent by ancient Arabs in the Middle East.
Therefore, it is very plausible that regular use of ithmid Kohl, as has been strongly recommended by prophet Muhammad ( May Allah’s peace and blessings be upon him), could protect the eyes against viral infections such as that caused by CMV.