Contrast sensitivity in children and adults.

نویسندگان

  • L D Beazley
  • D J Illingworth
  • A Jahn
  • D V Greer
چکیده

Contrast sensitivity functions to vertical sinusoidal gratings have been measured in 135 subjects ranging from 3 to 29 years of age. The reported contrast sensitivities for all spatial frequencies increased steadily with age, reaching adult levels during adolescence. The usefulness of these functions as a clinical test is discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Comparing the anatomy of the intrathoracic systemic central venous system in Iranian pediatrics and adults based on chest CT scan and evaluation of rate of catheter malposition in children

Background: Central venous catheterization is a procedure that is being performed frequently especially in critical clinical settings. In such conditions, good knowledge of the surface anatomy of venous structures is vital to avoid possible complications which could result in life-threatening situations such as bleeding and pneumothorax. Considering the difference between venous anatomy of chil...

متن کامل

O5: Children Need Our Protection Poly Trauma in Children-What Makes the Difference

Children are not little adults. Children have a limited responsibility corresponding to their age. Germany experiences a steady decline of Road Traffic Injuries and Fatalities in children to 28 674 injured children under 15 years and to 71 fatal injured children in 2014. In the European :::::union::::: similar data are available, but with a major difference between the countries. An evaluation ...

متن کامل

Immature visual neural system in children reflected by contrast sensitivity with adaptive optics correction

This study aimed to explore the neural development status of the visual system of children (around 8 years old) using contrast sensitivity. We achieved this by eliminating the influence of higher order aberrations (HOAs) with adaptive optics correction. We measured HOAs, modulation transfer functions (MTFs) and contrast sensitivity functions (CSFs) of six children and five adults with both corr...

متن کامل

Living Arrangements of Iranian Older Adults and Its Socio-Demographic Correlates

Objectives In the context of family changes and population aging, changing the pattern of life arrangements of older adults has become a social and policy issue. In this regard, this article aims to investigate the patterns of living arrangements of older adults and its socio-demographic correlates. Methods & Materials A secondary analysis of micro-census data for 2006 and 2016 was used. The s...

متن کامل

بررسی میزان تأثیر کتابخانه تلفنی رنگین‌کمان شهرداری سمنان بر افزایش فرهنگ مطالعه کودکان و نوجوانان

Purpose: The aim of the present research is to study the impact of Semnan Municipality phone library resources on the development of children' and young adults' reading, which is a new approach in the country Method: An experimental method including a pretest group and a post test group was selected as the research method. Two questionnaires were used for data collection. The pretest included ...

متن کامل

The Evaluation of Yellow vs. Blue Color Contrast Sensitivity pre and Post LASIK

Introduction: contrast sensitivity is one of the most important psychophysical tests that may be used for the evaluation of refractive state of eye and retinal image quality. Yellow vs. blue color contrast sensitivity may be more suitable in this regard. Materials and Methods: thirty myopic eyes were considered in this study. Yellow vs. blue color contrast sensitivity was evaluated under the sa...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The British journal of ophthalmology

دوره 64 11  شماره 

صفحات  -

تاریخ انتشار 1980