well i havent done any research but when my friend asked his optometrist if the drops could cause the thinning of his corneas he replied with only if they were used excessively. he use to use it all the time at work and at home hes the paranoid type
i found this on the murine site:
Stop use and ask a doctor if
* you experience pain
* condition worsens changes in vision occur
* symptoms persist
* for more than 72 hours
* redness or irritation of the eye continues
Keep out of reach of children. If swallowed, get medical help of contact a Poison Control Center right away.
To avoid contamination, do not touch tip of container to any surface. Replace cap after using. If you experience eye pain, changes in vision, continued redness or irritation of the eye, or if the condition worsens or persists for more than 72 hours, discontinue use and consult a doctor. If solution changes color or becomes cloudy, do not use. Keep this and all drugs out of the reach of children. In case of accidental ingestion, seek professional assistance or contact a Poison Control Center immediately
i guess if you ignored the warnings then you have a problem like i said he used it all the time