CLINICAL CORNER

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POSTMENOPAUSAL WOMEN AND DRY EYE A large proportion of postmenopausal women were found to have dry eye that was predominantly related to meibomian gland dysfunction, according to a recent study. Lisa Jones-Jordan, PhD, at the College of Optometry in Columbus, OH, and co-author Kelly K. Nichols, OD, MPH, PhD, FAAO, Professor at the University Of Houston College Of Optometry, evaluated 939 postmenopausal women of an average age of 65 for dry eye with Schirmer’s test, meibomian gland status, and symptoms. The dry eye was “classified as aqueous-deficient dry eye and no meibomian gland blockage, mixed dry eye with some signs of meibomian gland blockage, or evaporative dry eye with signs of meibomian gland blockage,” according to Jones-Jordan.

THE IPAD TESTS LETTER CONTRAST SENSITIVITY The Ridgevue Vision Contrast Sensitivity Test for the iPad showed similar repeatability in both normally sighted and low vision patients, according to author Mark A. Bullimore McOptom, PhD, FAAO, a Professor at The Ohio State University College of Optometry.  The study looked at 40 subjects: 20 with normal vision and 20 with low vision/reduced contrast sensitivity. The subjects were tested monocularly for contrast sensitivity at 1 meter while wearing their habitual correction. Researchers evaluated results with the Pelli-Robson Chart, Freiburg Acuity and Contrast Test, and Ridgevue Vision Contrast Sensitivity Test for the iPad. According to the study abstract, the three tests showed good repeatability in terms of the 95% limits of agreement. The Ridgevue test showed good agreement with the Freiburg test in by-letter scoring and 95% limits of agreement, but the Pelli-Robson test had significantly lower values. Patients with low vision had slightly poorer repeatability.

MEDICATION AND GLAUCOMA A study from Johns Hopkins University suggests that nearly half of patients on medication for glaucoma don’t actually take their medication correctly. Glaucoma is a leading cause of blindness but fortunately it can be slowed and visual loss prevented by eyedrops. In the survey, one-third of patients were taking their eyedrops less often than prescribed. A quarter delayed refilling their prescriptions. One-fifth did not fill their prescriptions at all and another fifth stopped their medication sooner than they were supposed to.

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