Apparently this is not new... listed next to it on PubMed was a case report from 1981 involving autofluorescence from tetracycline and minocycline.
Minocycline induced conjunctival autofluorescence deposition.
Minocycline can cause palpebral conjunctival greyish deposits in which autofluorescence can be readily demonstrated. We believe that this is a first report of the demonstration of in-vivo conjunctival autofluorescence of palpebral conjunctival minocycline deposit. In conclusion, minocycline deposit can be shown clinically without the need of an invasive biopsy procedure in patients with a history of blepharitis on long-term tetracycline group of medication presenting with palpebral conjunctival deposits.
Semin Ophthalmol. 2012 Jan;27(1-2):25-6.
Lim LT, Tarafdar S, Collins CE, Roberts F, Ramaesh K.
Tennent Institute of Ophthalmology, Gartnavel General Hospital , Glasgow , UK.