**9. Comments**

From the foregoing description many points are clear. MTF is the least traumatic of all filtra‐ tion operations. Currently we are making 150 to 250 micron filtration tracks. We are trying to cope with the frequent problem of internal block by iris, which has to be cleared with YAG laser. YAG laser management of iris block is a minor intervention.But think of the worldwide lack of YAG lasers in clinics and far off places. All the various strategies descri‐ bed above are attempts to keep the iris away. At the same time filtration should continue. I do all my filtration surgery with a 6X head-worn loupe/microscope. Thus it is possible to perform MTF in any remote area, where the light source shall be a hand held bright LED flash light.No dissection filtration surgery protects conjunctival lymphatics.There is an ever increasing load of tens of millions of glaucoma patients, who can not afford life long medi‐ cation.

Now let us consider, minimally traumatic filtration surgery in some specific situations.
