Can IOP drop significantly without medication or surgery?
MAR 10, 2014
Is it possible for intraocular pressure to lower from 25 to 15 without medication or surgery?
That is a large change but it is possible. There is a variation of intraocular pressure throughout the day. This is called diurnal variation. Also, different methods of measuring intraocular pressure may yield different results. The change mentioned above can be due to these variables. You must also consider that one of the intraocular pressure readings may have been measured incorrectly. You also might see a large drop in intraocular pressure when there is inflammation in the eye (usually with symptoms of redness, pain, and reduced vision) or a retinal tear or detachment (usually will occur with symptoms of floaters and flashes). I would suggest that in this case, there be additional measurements taken at different times of day.