Agreement between distance and near minus-lens-to-blur amplitude of accommodation in pre-presbyopic subjects
نویسندگان
چکیده
منابع مشابه
Lens fluorescence and accommodative amplitude in pre-presbyopic and presbyopic subjects.
Accommodative amplitude (AA; the difference, measured in diopters, between the near and far points of vision) declines steadily with age such that, by midlife, most individuals are unable to focus clearly on near objects and, thus, are said to be presbyopic. Conversely, intrinsic lens fluorescence (LF) increases steadily with age. Previous studies have suggested that AA and LF are negatively co...
متن کاملAccommodative amplitude using the minus lens at different near distances
PURPOSE The purpose of this study was to compare the mean findings and the repeatability of the minus lens (ML) amplitude of accommodation (AA) at 33 cm and 40 cm. MATERIALS AND METHODS AA was measured from the dominant eye of 120 fully corrected subjects using the ML procedure when viewing the target at both 33 and 40 cm. Each measurement was repeated between 24 and 48 hours after the first ...
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according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...
Accommodation measurements in a prepresbyopic and presbyopic population.
PURPOSE To study the efficacy of several subjective and objective methods of accommodation measurement in normal prepresbyopic and presbyopic populations to identify appropriate methods for measuring the outcome of accommodative restorative procedures. SETTING University of Houston, College of Optometry, Houston, Texas, USA. METHODS Thirty-one normal subjects with a mean age of 43.7 years (...
متن کاملMeasuring the heterophoria: Agreement between two methods in non-presbyopic and presbyopic patients.
PURPOSE To establish whether the cover test and von Graefe methods are interchangeable in a non-presbyopic and presbyopic population. METHODS We performed a prospective study on a sample of 127 non-presbyopic subjects between 20 and 45 years old and 56 presbyopic between 40 and 78 years old. Distance and near vision phoria were measured using the von Graefe method (VG) and cover test (CT). We...
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ژورنال
عنوان ژورنال: African Vision and Eye Health
سال: 2019
ISSN: 2410-1516,2413-3183
DOI: 10.4102/aveh.v78i1.491