Steger JS, Durai I, Odayappan A, Raman R, Sruthi T, Song AJ, Puthuran G, Venkatesh R, Colantuoni E, Robin AL. An Evaluation of the Efficacy and Safety of Timolol Maleate 0.5% Microdrops Administered with the Nanodropper.
Ophthalmology 2024;
131:1045-1055. [PMID:
38492865 DOI:
10.1016/j.ophtha.2024.03.012]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024] Open
Abstract
PURPOSE
To examine if 12.5 μl timolol maleate 0.5% microdrops dispensed with the Nanodropper Adaptor provide noninferior intraocular pressure (IOP) reduction compared with conventional 28 μl drops in patients with open-angle glaucoma (OAG) and ocular hypertension (OHT).
DESIGN
Prospective, noninferiority, parallel, multicenter, single-masked, active-controlled, randomized trial.
PARTICIPANTS
Treatment-naïve subjects who were recently diagnosed with OAG and OHT at the Aravind Eye Care System.
METHODS
Both eyes of subjects received 1 commercially available drop or both eyes of subjects received 1 microdrop of timolol maleate 0.5%. We measured IOP, resting heart rate (HR), and blood pressure (BP) at baseline and 1, 2, 5, and 8 hours after timolol administration.
MAIN OUTCOME MEASURES
The IOP was the primary outcome measure. Secondary outcomes were resting HR, systolic BP (sBP), and diastolic BP (dBP).
RESULTS
Adaptor-mediated microdrops and conventional drops of timolol significantly decreased IOP compared with baseline at all timepoints. Noninferiority was established at 3 of 4 timepoints. Heart rate decreases with Nanodropper were approximately 3 beats per minute (bpm) less than with conventional drops.
CONCLUSIONS
Timolol microdrops appear to be as effective in ocular hypotensive action as conventional drops with a slightly attenuated effect on resting HR and BP.
FINANCIAL DISCLOSURE(S)
Proprietary or commercial disclosure may be found after the references.
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