Now and then I use eyedrops to comfort dry or strained eyes when sitting in front of a computer for long hours. Since reasonabyl, effective formulated drops are rather expensive, epsecially those without preservatives, I use to make the mysel, simply by taking sterile NaCl 0,9% injection soulution and 2% Ectoin + 0,3% Hyakuronic acid - both substances can be obtained for much lower prices that what you pay for in ready made drops. Since Salicylic acid is also used in standard eyedrops, Usually in conc. of 1mg/ml, I thought mixing a "peaty" sort of eye-drop. In additon to Sailcylic acid, coffeine seems to be a very promising agent for eyedrops: Caffeine eye drops protect against UV-B cataract Could Caffeine Help Dry Eye? potentially protective agianst UV-radiation and dryness. Also, instead of NaCl 0,9% I figured using a 0,9% solution of Magnesiumchloride. Mg seems to be an important mineral especially for corneal health, as is indicated also in this thread by Ella and Haidut: https://raypeatforum.com/community/...vents-neurological-diseases.4700/#post-185466 Any thoughts on this? I'll probably let you know how they "feel" to the eye.