Related Experiment Video
Updated: Jul 21, 2025

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
Published on: February 15, 2022
Loss of Blink Regularity and Its Impact on Ocular Surface Exposure
Genis Cardona1,2, Marc Argilés1,3, Elisabet Pérez-Cabré1,2
1Optics and Optometry Department, Universitat Politècnica de Catalunya, c/Violinista Vellsolà, 37, 08222 Terrassa, Spain.
Abstract:
(1) Background: Changes in blink parameters have been found to influence ocular surface exposure, eliciting symptoms of dry eye and ocular signs. The aim of the study was to highlight the relevance of including blink regularity as a new parameter to fully characterize blinking; (2) Methods: A novel characterization of blink parameters is described, including spontaneous eyeblink rate (SEBR), percentage of incomplete blinks, and blink regularity. A pilot study was designed in which tear film break-up time (TFBUT), blink parameters, and the time percentage of ocular surface exposure were determined in eight subjects (52.0 ± 16.6 years, 4 females) in three experimental conditions (baseline, reading a hard-copy text, and reading from an electronic display). Blink parameters were monitored through asynchronous image analysis of one minute video segments; (3) Results: All blink parameters were influenced by experimental conditions. A trend was observed in which both reading tasks resulted in an increase in ocular surface exposure, mainly related to a combination of reduced SEBR, increased percentage of incomplete blinks, and loss of blink regularity; (4) Conclusions: A complete characterization of blink parameters is relevant to better understand ocular dryness related to surface exposure and to advice patients towards a reeducation of their blinking habits.
More Related Videos
07:27Anterior Segment Organ Culture Platform for Tracking Open Globe Injuries and Therapeutic Performance
Published on: August 25, 2021
12:59Assessment of Oxidative Damage in the Primary Mouse Ocular Surface Cells/Stem Cells in Response to Ultraviolet-C UV-C Damage
Published on: February 15, 2020
Related Concept Videos
Accessory Structures of the Eye
Photoreceptors and Visual Pathways
Glaucoma: Overview
Focusing of Light in the Eye
Angle Closure Glaucoma: Treatment
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...