18th century eye testing spectacles.

Eyes: Identity and Commemoration in British 18th and 19th Century Sculpture

Applications of a Genetic Algorithm for Identification of Maxima in Specific Absorption Rates in the Human Eye Close to Perfectly Conducting Spectacles

this paper investigates relative changes in specific absorption rates due to perturbing metallic spectacles in proximity to the face. A representative electrical property biological matter model with twenty-five distinct tissue types based on images of an adult male is used with the FDTD method. Both plane wave and dipole source stimuli are investigated and are used to represent a mobile cellul...

The prevalence of uncorrected refractive errors in underserved rural areas

Purpose To determine the prevalence of uncorrected refractive errors, need for spectacles, and the determinants of unmet need in underserved rural areas of Iran. Methods In a cross-sectional study, multistage cluster sampling was done in 2 underserved rural areas of Iran. Then, all subjects underwent vision testing and ophthalmic examinations including the measurement of uncorrected visual ac...

Near visual acuity in an inner city Hispanic community: understanding the barriers and benefits of correction

Presbyopia is age-related loss of accommodation that gradually impairs near vision. Few studies have examined the burden of presbyopia in the United States of America (USA)1,2 and none have examined it in economically disadvantaged or minority populations, in which there are increased rates of visual impairment and decreased use of eye care services.3,4 In our study, individuals ≥35 years of ag...

A Survey on the Principles and Techniques of Gynecology and Obstetrics Surgery in the Islamic Period (From the 3rd to the 12th Century AH. / 9th to 18th Century AD.)

Surgical science is one of the important aspects of traditional medicine in the Islamic period. By reviewing the compilations in the field of gynecology and obstetrics some common and well-documented principles can be traced that have been accepted by the majority of surgeons as the fixed rules. The extraction of these principles is the first issue and the examination of gynecological surgery t...