Results 21 to 30 of about 129,670 (294)

Prevalence and Burden of Refractive Errors at National and Sub-national Levels in Iran

Journal of Ophthalmic & Vision Research, 2022
Purpose: To estimate the prevalence, burden of refractive errors and their associated trend from 1990 to 2018 and geographic inequalities in Iran. Methods: Data regarding the epidemiology of refractive errors was extracted from three different sources ...
Seyed Mohammadi, Farshad Farzadfar, Parinaz Mehdi Pour, Elham Ashrafi, Alireza Lashay, Bahram Mohajer, Mohsen Asadi Lari   +6 more
doaj   +1 more source

The prevalence of uncorrected refractive errors in underserved rural areas

Journal of Current Ophthalmology, 2017
Purpose: To determine the prevalence of uncorrected refractive errors, need for spectacles, and the determinants of unmet need in underserved rural areas of Iran.
Hassan Hashemi, Hedayat Abbastabar, Abbasali Yekta, Samira Heydarian, Mehdi Khabazkhoob   +4 more
doaj   +1 more source

The preferences and practices regarding refractive surgeries among Saudi Ophthalmology Society members

Saudi Journal for Health Sciences, 2022
Background: Refractive errors are the leading cause of visual impairments in the Kingdom of Saudi Arabia (KSA). Laser refractive eye surgeries are getting huge popularity for correcting these visual impairments in KSA and other gulf countries.
Abdullhamid S AlGhamdi, Rahma A AlGethami, Nada Ahmad Almalki, Abdulrahman Mohammed Al-Amri, Ma'an Al-Barry   +4 more
doaj   +1 more source

Agreement between methods of retinoscopy, conventional subjective refraction and fogging subjective refraction [PDF]

Reviews in Clinical Medicine
Purpose: to compare the refractive error measurements achieved through three distinct techniques: retinoscopy, subjective method, and the subjective fogging method. Methods: Participants included 223 young adults aged 18 to 36 years (mean age: 25.63±5.31)
Atefeh Kebriaei, Asieh Ehsaei, Hadi Ostadimoghaddam, Elham Bakhtiari, Mojtaba Salamati, NEGAREH YAZDANI, Shima Mesbahi   +6 more
doaj   +1 more source

A contralateral eye study comparing characteristics of corneal endothelial cells in bilateral keratoconus patients with unilateral corneal Vogt's striae

Journal of Current Ophthalmology, 2018
Purpose: The aim of this study was to analyze and compare corneal endothelial cell morphology and characteristics in bilateral keratoconus (KCN) patients with unilateral Vogt's striae. Methods: Fifty patients aged 20–38 years were recruited in this cross-
Hadi Ostadi-moghaddam, Mohamad-Reza Sedaghat, Tahereh Rakhshandadi, Sattar Rajabi, Foroozan Narooie-Noori, Farshad Askarizadeh   +5 more
doaj   +1 more source

Using aircraft measurements to determine the refractive index of Saharan dust during the DODO Experiments [PDF]

, 2010
Much uncertainty in the value of the imaginary part of the refractive index of mineral dust contributes to uncertainty in the radiative effect of mineral dust in the atmosphere.
Formenti, P, Harrison, M. A. J., Highwood, E. J., McConnell, C. L.   +3 more
core   +1 more source

Investigation of the effects of Islamic fasting on ocular parameters

Journal of Current Ophthalmology, 2017
Purpose: To investigate the effects of religious fasting during the month of Ramadan on intraocular pressure (IOP), refractive error, corneal tomography and biomechanics, ocular biometry, and tear film layer properties.
Mohamad-Reza Sedaghat, Javad Heravian, Farshad Askarizadeh, Mahmoud Jabbarvand, Mohsen Nematy, Tahereh Rakhshandadi, Maryam-Sadat Amirkalali-Sijavandi, Fatemeh Shahsavan, Foroozan Narooie-Noori   +8 more
doaj   +1 more source

Comparison of mechanical debridement and trans-epithelial myopic photorefractive keratectomy: A contralateral eye study

Journal of Current Ophthalmology, 2019
Purpose: To compare clinical outcomes between mechanical debridement photorefractive keratectomy (m-PRK) and trans-epithelial photorefractive keratectomy (t-PRK) in myopic patients.
Siamak Zarei-Ghanavati, Javad Heravian Shandiz, Mojtaba Abrishami, Maliheh Karimpour   +3 more
doaj   +1 more source

Long-Term Scintillation Studies of Pulsars: III. Testing Theoretical Models of Refractive Scintillation [PDF]

, 1998
Refractive interstellar scintillation (RISS) is thought to be the cause behind a variety of phenomena seen at radio wavelengths in pulsars and compact radio sources.
Bhat, N. D. Ramesh, Gupta, Yashwant, Rao, A. Pramesh   +2 more
core   +2 more sources

The normal distribution of corneal eccentricity and its determinants in two rural areas of north and south of Iran

Journal of Current Ophthalmology, 2018
Purpose: The aim of this study was to determine the distribution of corneal eccentricity (E-value) in a normal population and to examine related factors.
Samira Heydarian, Hassan Hashemi, Fereshteh Shokrollahzadeh, Abbas Ali Yekta, Hadi Ostadimoghaddam, Akbar Derakhshan, Mehdi Khabazkhoob   +6 more
doaj   +1 more source