Consumer Council warns contact-lens wearers over using eye drops
Wearers of contact lenses should remove them before applying drops that contain preservatives, the Consumer Council says
People using contact lenses should remove them when applying eye drops containing preservatives, which can otherwise cause irritation, the Consumer Council has warned.
The watchdog also said yesterday that eye drops containing steroids should never be used without a prescription, as they can seriously damage the eye when misused.
Reporting on studies of 16 brands of eye drops sold at pharmacies - most for moistening eyes, relieving red eyes and alleviating allergies - it said that 11 listed preservatives in their product information.
Two others, Hisamitsu Ganryo Jun drops and Rohto moisturiser, contained preservatives but did not list them.
Depending on the type of chemicals, preservatives could be toxic, might cause dryness and might irritate the cornea, the council said.
"For contact-lens wearers, preservatives may cling to the lens' surface and become a source of irritation," said Professor Ron Hui Shu-yuen, vice-chairman of the council's community-relations committee.
Four brands give clear instructions that users should not use the drops with their lenses on. The makers of several others, questioned by the council, replied that users should take their lenses off before use.