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. 2007 Apr;91(4):497-9.
doi: 10.1136/bjo.2006.103093. Epub 2006 Aug 17.

Accuracy and performance of a commercially available Dosing Aid

Tara H Cronin  1 , Malik Y Kahook, Kira L Lathrop, Robert J Noecker
Affiliations

Accuracy and performance of a commercially available Dosing Aid

Tara H Cronin et al. Br J Ophthalmol. 2007 Apr.

Abstract

Aim: To evaluate the recently introduced Travatan Dosing Aid (TDA) for its accuracy in recording and dispensing eyedrops.

Methods: The number of eyedrops dispensed with each lever depression and agreement of total number of drops dispensed with that recorded by the device was evaluated in a controlled setting.

Results: The TDA correctly recorded a drop being dispensed 100% of the time with full TDA lever depression for <3 s. Under these conditions, agreement between numbers of drops dispensed and recorded was 99%. However, failure to fully depress the lever or prolonged lever depression for >4 s resulted in unreliable TDA recording.

Conclusion: Eyedrops were reliably recorded by the TDA after each full lever depression. However, patients need to be instructed about optimal technique so that evaluation of compliance is not confounded by mechanical factors.

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Conflict of interest statement

Competing interests: RJN and MYK have received speaking fees from Alcon.

References

    1. Patel P C, Spaeth G L. Compliance in patients prescribed eyedrops for glaucoma. Ophthamol Surg 199526233–236. - PubMed
    1. Gurwitz J H, Glynn R J, Monane M.et al Treatment for glaucoma: adherence by the elderly. Am J Public Health 199383711–716. - PMC - PubMed
    1. Kass M A, Gordon M, Meltzer D W. Can ophthalmologists correctly identify patients defaulting from pilocarpine therapy? Am J Ophthalmol 1986101524–530. - PubMed
    1. Deokule S, Sadiq S, Shah S. Chronic open angle glaucoma: patient awareness of the nature of the disease, topical medication, compliance and the prevalence of systemic symptoms. Ophthal Physiol Opt 2004249–15. - PubMed
    1. Taylor S A, Galbraith S M, Mills R P. Causes of non‐compliance with drug regimens in glaucoma patients: a qualitative study. J Ocul Pharmacol Ther 200218401–409. - PubMed

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