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Alfred Sommer
Researcher at Johns Hopkins University
Publications - 366
Citations - 32936
Alfred Sommer is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Xerophthalmia & Vitamin A deficiency. The author has an hindex of 86, co-authored 364 publications receiving 31556 citations. Previous affiliations of Alfred Sommer include Centers for Disease Control and Prevention & Johns Hopkins University School of Medicine.
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Journal ArticleDOI
Efficacy and effectiveness of influenza vaccines: a systematic review and meta-analysis
TL;DR: Influenza vaccines can provide moderate protection against virologically confirmed influenza, but such protection is greatly reduced or absent in some seasons.
Journal ArticleDOI
Racial variations in the prevalence of primary open-angle glaucoma. The Baltimore Eye Survey.
James M. Tielsch,Alfred Sommer,Joanne Katz,Richard M. Royall,Harry A. Quigley,Jonathan C. Javitt,Jonathan C. Javitt +6 more
TL;DR: Black Americans are at higher risk of primary open-angle glaucoma than their white neighbors, which may reflect an underlying genetic susceptibility to this disease and indicates that additional efforts are needed to identify and treat this sight-threatening disorder in high-risk communities.
Journal ArticleDOI
Relationship between intraocular pressure and primary open angle glaucoma among white and black Americans. The Baltimore Eye Survey.
Alfred Sommer,James M. Tielsch,Joanne Katz,Harry A. Quigley,John D. Gottsch,Jonathan C. Javitt,Kuldev Singh +6 more
TL;DR: Results confirmed that IOP is an important factor in glaucoma, but did not support the traditional distinction between "normal" and "elevated" pressure, nor its corollaries, "low-tension" glau coma and "high-tensions" glAUcoma.
Journal ArticleDOI
Clinically detectable nerve fiber atrophy precedes the onset of glaucomatous field loss.
Alfred Sommer,Joanne Katz,Harry A. Quigley,Neil R. Miller,Alan L. Robin,Ronald C. Richter,Kathe A. Witt +6 more
TL;DR: Nerve fiber layer defects expanded with time, often by the development and coalescence of adjacent areas of damage, and field defects closely corresponded, but nerve fiber layer loss was generally more widespread.
Journal ArticleDOI
The VF-14. An index of functional impairment in patients with cataract.
Earl P. Steinberg,James M. Tielsch,Oliver D. Schein,Jonathan C. Javitt,Phoebe D. Sharkey,Sandra D. Cassard,Marcia W. Legro,Marie Diener-West,Eric B Bass,Anne M. Damiano,Donald M. Steinwachs,Alfred Sommer +11 more
TL;DR: The VF-14 is a reliable and valid measure of functional impairment caused by cataract and provides information not conveyed by visual acuity or a general measure of health status.