Results 71 to 80 of about 1,806,748 (193)

Uncorrected refractive errors and spectacle utilisation rate in Tehran: the unmet need [PDF]

British Journal of Ophthalmology, 2006
To determine the prevalence of the met and unmet need for spectacles and their associated factors in the population of Tehran.6497 Tehran citizens were enrolled through random cluster sampling and were invited to a clinic for an interview and ophthalmic examination.
A, Fotouhi, H, Hashemi, B, Raissi, K, Mohammad   +3 more
openaire   +2 more sources

Weighted crude (univariable) associations with uncorrected refractive error (URE) and need for reading glasses.

, 2018
Weighted crude (univariable) associations with uncorrected refractive error (URE) and need for reading glasses.
David Macleod (2557612), David Musendo (5158871), Jennifer L. Y. Yip (770665), Tess Bright (3908404), Peter Irunga (5158868), Hannah Kuper (25751)   +5 more
core   +1 more source

Influence of Laser Repetition Rate, Fluence and Spot Size on LA‐Q‐ICP‐MS/MS 87Sr/86Sr Precision: Insights from Apatites and Silicate Glasses

Geostandards and Geoanalytical Research, EarlyView.
Key Points Higher laser repetition rate, fluence and larger spot size increase signal intensity. Higher laser repetition rate produces overlaps in aerosolised particles, improving signal stability and precision. For Sr‐rich materials, moderate spot diameter (≤ 60 μm), 3 J cm‐2 fluence and ≥ 12 Hz repetition rate are recommended.
Edafe O. Ominigbo, David T. Murphy, Kate E. Jenkins, Mitchell de Bruyn, Karine H. Moromizato   +4 more
wiley   +1 more source

Prevalence of Refractive Error, Presbyopia, and Spectacle Coverage in Bogotá, Colombia: A Rapid Assessment of Refractive Error [PDF]

, 2019
SIGNIFICANCE: Uncorrected refractive error is the leading cause of visual impairment; therefore, reducing its prevalence is important worldwide. For two decades, there has not been a comprehensive assessment of refractive error in Latin America. PURPOSE:
Peña, Fernando Yacoov, Silva, Juan Carlos, Ving Fai Chan, Thomas John Naduvilath, Naduvilath, Thomas John, Chan, Ving Fai, Mayorga, Myriam, Casas Luque, Luisa, Peña, Fernando, Luisa Casas Luque, Fernando Peña, Ramírez, Leonardo, Kovin Naidoo, Myriam Mayorga, Leonardo Ramírez, Juan Carlos Silva, Naidoo, Kovin   +16 more
core   +1 more source

Pattern of Refractive Error among Patients attending a Tertiary Care Hospital in Southern Assam, India: A Cross-sectional Study [PDF]

Journal of Clinical and Diagnostic Research
Introduction: Uncorrected Refractive Errors (URE) are a primary cause of vision impairment worldwide and a leading contributor to blindness. These errors impact daily productivity, limit job opportunities and can significantly diminish quality of life ...
Nilanjan Kaushik Thakur, Ruma Das Debsikdar, Srawani Sarkar, Surabhi Prasad, S Lakshmi, Devajit Deka   +5 more
doaj   +1 more source

Addressing the Burden of Uncorrected Refractive Error in Mozambique

, 2011
A situational analysis indicates a lack of eye health personnel who can and do refract. The logical course of action would be to train more eye health personnel. A conservative estimated annual burden of URE in lost productivity in Mozambique is $14,486,692.
Thompson, Stephen, Loughman, James, Ramson, Prasidh, Bilotti, Luigi, Harris, Geoff, Naidoo, Kovin   +5 more
openaire   +2 more sources

A novel strategy for management of uncorrected refractive errors in urban slums

Oman Journal of Ophthalmology, 2015
Blindness and Vision impairment remains a major public health issue not only in rural but also in urban areas. Concept of using peripheral health centers to render primary health care services to the community was a WHO proposed model. However, establishing them in urban slums is a challenge as most of the slums are illegal establishments.
Prema K Chande, Hiral Korani, B R Shamanna   +2 more
openaire   +3 more sources

Interventional human ocular safety experiments for 222‐nm far‐ultraviolet‐C lamp irradiation

Photochemistry and Photobiology, Volume 101, Issue 2, Page 517-526, March/April 2025.
To directly assess the ocular safety of 222‐nm far‐ultraviolet‐C (UVC) irradiation in humans, five subjects were exposed to 222‐nm UVC at doses of 22, 50, and 75 mJ/cm2. The findings indicate that far‐UVC irradiation does not cause “clinically significant photokeratitis” or long‐term ocular damage, though it may induce temporary discomfort.
Kazunobu Sugihara, Sachiko Kaidzu, Masahiro Sasaki, Masaki Tanito   +3 more
wiley   +1 more source

Prevalence of visual impairment and estimation of refractive errors among school children in Kakamega, Kenya [PDF]

International Journal of Ophthalmology
AIM: To investigate the prevalence of visual impairment (VI) and provide an estimation of uncorrected refractive errors in school-aged children, conducted by optometry students as a community service. METHODS: The study was cross-sectional.
Isabel Signes-Soler, Alfred Ragot, Sheilah Nangena, Andrew Wekesa, Raúl Montalbán Llamusí   +4 more
doaj   +1 more source

Human ocular‐discomfort‐free thresholds for 222 nm Far‐UVC irradiation: A prospective interventional study

Photochemistry and Photobiology, EarlyView.
Eye discomfort induced by 222 nm far‐UVC irradiation is significantly correlated with both irradiance and radiant exposure dose. The red circles indicate conditions with significant differences in the number of eye discomfort compared to the control group (blue circles), while the green circles indicate conditions with no difference from the control ...
Sachiko Kaidzu, Kazunobu Sugihara, Masaki Tanito   +2 more
wiley   +1 more source