Wer hat noch große Pupillen/wurde mit OZ >7,5mm gelasert??
Verfasst: 14.05.2013, 16:51
Hallo Leute,
ich habe sehr große Pupillen (geschätzt ~7,5-8mm mesopisch und ~9mm skotopisch) und Angst mir mit einer OP ernsthafte Nachtsichtprobleme einzuhandeln...
Ich war schon bei einigen Laserzentren und alle waren m.M. bei der Pupillenmessung nicht sorgfältig: entweder war der Raum zu hell, es gab keine Adaptionszeit oder ich wurde kurz vor der Messung nochmal geblendet, was jede Adaption wieder hinfällig werden ließ...
Meine Fragen an Euch:
Wer wurde mit sehr großen Pupillen gelasert und mit welcher optischen Zone? Wie ist die Nachtsicht?
Wer hat eine wirklich gute Messung der Pupillengröße gehabt (potentielle Fehler siehe unten) und wo war das?
Danke und viele Grüße
Martin
hier noch ein paar interessante Links zum Thema:
http://www.lasikcomplications.com/largepupils.htm
http://lasikscam.com/viewtopic.php?f=22&t=17
http://www.lasermyeye.org/keratoscoop/c ... n2003.html
(die Seite ist leider down, aber ich hatte den relevanten Text kopiert...)
Wait a minute. What Tips for Dark Adaptation can be gleaned from all that dusty research? In general, 1) the ambient Chamber illumination should probably be less than 5 lux to simulate night driving (this equals ‘way too dim to read without squinting’), 2) you should stay in there for a minimum of 3-5 minutes, depending on how much light you were exposed to before you were pushed into the Chamber, 3) you should not stay in there all by yourself for "too long", because your RAS starts to power down, 4) nobody should enter the Chamber during adaptation and testing, because a flash of light in your eyes, no matter how brief, may cause constriction of your pupils to an unknown degree for an unknown duration, 5) you can’t try to read (the consent form, say) to keep yourself awake, because looking at up close stuff constricts your pupils.
The LD has had many a pupil measurement in the process of researching this article and has noted the following faux pas:
Failure to dark-adapt you at all
Dark-adapting at a room illumination that is too high
Dark-adapting in a dim room while you are facing the projected visual acuity chart from a short distance away
Dark-adapting you for a few minutes immediately after you have had lots of very bright lights shined in your eyes
Dark-adapting for an insufficient amount of time, period
Failing to prevent your urge to focus up-close during the actual measurement
Failing to prevent your urge to fall asleep
(this is the big one) Tucking you away in the Chamber of Pupil Measurement, getting you nicely dark-adapted but not somnolent, and then having the technician or the doc walk back in the room from a brightly illuminated corridor
ich habe sehr große Pupillen (geschätzt ~7,5-8mm mesopisch und ~9mm skotopisch) und Angst mir mit einer OP ernsthafte Nachtsichtprobleme einzuhandeln...
Ich war schon bei einigen Laserzentren und alle waren m.M. bei der Pupillenmessung nicht sorgfältig: entweder war der Raum zu hell, es gab keine Adaptionszeit oder ich wurde kurz vor der Messung nochmal geblendet, was jede Adaption wieder hinfällig werden ließ...
Meine Fragen an Euch:
Wer wurde mit sehr großen Pupillen gelasert und mit welcher optischen Zone? Wie ist die Nachtsicht?
Wer hat eine wirklich gute Messung der Pupillengröße gehabt (potentielle Fehler siehe unten) und wo war das?
Danke und viele Grüße
Martin
hier noch ein paar interessante Links zum Thema:
http://www.lasikcomplications.com/largepupils.htm
http://lasikscam.com/viewtopic.php?f=22&t=17
http://www.lasermyeye.org/keratoscoop/c ... n2003.html
(die Seite ist leider down, aber ich hatte den relevanten Text kopiert...)
Wait a minute. What Tips for Dark Adaptation can be gleaned from all that dusty research? In general, 1) the ambient Chamber illumination should probably be less than 5 lux to simulate night driving (this equals ‘way too dim to read without squinting’), 2) you should stay in there for a minimum of 3-5 minutes, depending on how much light you were exposed to before you were pushed into the Chamber, 3) you should not stay in there all by yourself for "too long", because your RAS starts to power down, 4) nobody should enter the Chamber during adaptation and testing, because a flash of light in your eyes, no matter how brief, may cause constriction of your pupils to an unknown degree for an unknown duration, 5) you can’t try to read (the consent form, say) to keep yourself awake, because looking at up close stuff constricts your pupils.
The LD has had many a pupil measurement in the process of researching this article and has noted the following faux pas:
Failure to dark-adapt you at all
Dark-adapting at a room illumination that is too high
Dark-adapting in a dim room while you are facing the projected visual acuity chart from a short distance away
Dark-adapting you for a few minutes immediately after you have had lots of very bright lights shined in your eyes
Dark-adapting for an insufficient amount of time, period
Failing to prevent your urge to focus up-close during the actual measurement
Failing to prevent your urge to fall asleep
(this is the big one) Tucking you away in the Chamber of Pupil Measurement, getting you nicely dark-adapted but not somnolent, and then having the technician or the doc walk back in the room from a brightly illuminated corridor