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Coming in the February 2010 Optometry & Vision Science
Here are brief highlights.
The online and printed copy will be available early-February.
E-Publication Ahead-of-Print now available for all these articles at http://journals.lww.com/optvissci
Anthony J. Adams, OD, PhD, FAAO
Editor-in-Chief
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Children with severe vision impairment from cortical visual impairment (CVI) often have much lower behavioral visual acuity compared to objective visually evoked potential (VEP) measures. Our authors make the important discovery that, years later, the behavioral acuity achieved was predicted from the initial VEP measure. |
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Lea Symbols and the HOTV test were equally effective for testing visual acuity in three to five year old children. There were no significant differences in sensitivity between tests for any age group, for any targeted vision conditions, or even the most severe vision conditions. |
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The authors looked at sensitivity and specificity and answer "no". Children with any Vision In Preschooler (VIP)-targeted condition were as likely to be detected using the initial confidence number reading as using the higher confidence number reading obtained from repeated testing. They suggest that failure to reach a confidence number of 6 is cause for referral for a comprehensive eye examination. |
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The authors report that preschool vision screening (PVS) in primary care settings is disturbingly rare. Providers with more advanced knowledge and attitudes are more likely to report routine PVS in compliance with the guidelines of the American Academy of Pediatrics (AAP). The authors advocate greater education of primary care providers. |
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The judged direction of side gaze from straight ahead is often biased from its true direction. The author finds that when the perceived directions of monocular gaze from the two eyes do not agree the perceived direction of binocular gaze resolves this conflict by matching that of the abducting eye. |
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With dilating drops, patients with dark irises generally take longer to dilate and fail to produce as large a pupil as patients with light irises. Two "cocktail" combinations, of two common dilation drops with different mechanisms, successfully produce a 7 mm pupil more quickly in both children and adults with dark irises. |
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Keratoconus, previously thought to be non-inflammatory in nature, does show elevated levels of inflammatory markers in the patient's tear film. This inflammatory component seems associated with ocular discomfort, providing a rationale for investigating the efficacy of a NSAID, ketorolac tromethamine 0.4%, (Acular LS), for pain management for keratoconic patients wearing RGP lenses. However the authors found an artificial tear solution appeared to be equally effective in improving comfort. |
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The authors conducted a survey of 216 eye care practitioners and 2232 patients in North America. Patients wearing daily disposable and one-month replacement lenses were more compliant than patients wearing two-week replacement lenses. "Saving money" and "forgetting which day to replace" were among the most frequent reports for non-compliance by patients. |
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Green laser pointers with threatening output powers in the tens to hundreds of milliwatt (mW) range, clearly exceeding the 5mW of ANSI class 3a limit, are now readily available in the global market. Educators and science communicators often use them in public sky observations and other nighttime outreach activities. However the author’s research suggests that output powers at the safety levels below 5mW are fully adequate for use in educational nighttime outdoor activities. |
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