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H. G. Sperling, A. Kattech, M. T. Paukert, K. Dawson, S. Hilsenbeck, R. W. Yee; The Effects of Artificial Tears and Micro-Envirmoment Glasses (MEGSTM) on Evaporative Dry Eye Ocular Surface Signs and Symptoms in Computer Vision Syndrome. Invest. Ophthalmol. Vis. Sci. 2007;48(13):421.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the efficacy of interventions designed to treat computer vision syndrome: artificial tears and isolation techniques i.e. Micro-Environment Glasses (MEGsTM)
Computer users greater than 15 hours each week were classified as either symptomatic or control from their OSDI score. Subjects underwent a baseline evaluation including tear breakup time (TBUT), fluorescein staining (FS), lissamine green staining (LGS), measurement of conjunctival injection, and a thorough meibomian gland disease (MGD) evaluation. . In each 30 min challenge, a computer game was played for 30 minutes in a temperature, humidity and air controlled environment. Four random interventions included: no intervention, artificial tears (SystaneTM) instilled immediately prior to the computer challenge, MEGs and both MEGs and SystaneTM. Following each challenge, subjects filled out an eye-comfort questionnaire, and had an ocular surface assessment which included TBUT, FS, and LGS.Results The MEGs symptomatic group showed significant (P≤ .05) improvement in comfort score and tear break up time vs. with the no protection and SystaneTM alone conditions. They showed a progressive trend of less FS with SystaneTM vs. no treatment, MEGs vs. SystaneTM, MEGs plus SystaneTM vs. MEGs alone. Significant (p≤ .05) reduction in LGS with MEGs plus SystaneTM vs. no treatment, MEGs alone and SystaneTM alone. A significant correlation (p≤ .05) was found between lifetime cumulative computer use and the OSDI index but no significant correlation between current number of hours of computer use and the OSDI score, suggesting a 2 stage mechanism (most probably of MGD) involving long term degenerative effects of computer use (probably via blink inhibition) vs. acute dessication effects as produced by computer challenge.
MEGs are effective at improving signs and symptoms of dry-eye among symptomatic computer users, and offer additional protection when combined with SystaneTM.
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