نتایج جستجو برای: axial angle

تعداد نتایج: 175346  

Journal: :American journal of ophthalmology 2013
Hamid Hosseini Nariman Nassiri Parham Azarbod JoAnn Giaconi Tom Chou Joseph Caprioli Kouros Nouri-Mahdavi

PURPOSE To report a novel method for measuring the vertical tilt angle of the optic nerve (ON) head and to investigate the associated factors. DESIGN Cross-sectional diagnostic study. METHODS One hundred and twelve normal, glaucomatous, and glaucoma suspect eyes (99 patients) were enrolled in this study. Subjects underwent a full eye examination, biometry, and spectral-domain optical cohere...

2006
De-Min Li Zhen Li

The masses of the K1( 3P1) and K1( 1P1) are considered in a nonrelativistic constituent quark model, and the absolute value of the K1( 3P1) −K1(P1) mixing angle is determined to be about 59.29◦. Comparison of the theoretical predictions on the strong decay widths of the K1(1270) and K1(1400) in the 3P0 decay model as well as the production ratio of these two states in the τ decay between the av...

Journal: :Journal of applied biomechanics 2007
Niell G Elvin Alex A Elvin Steven P Arnoczky Michael R Torry

Impact forces and shock deceleration during jumping and running have been associated with various knee injury etiologies. This study investigates the influence of jump height and knee contact angle on peak ground reaction force and segment axial accelerations. Ground reaction force, segment axial acceleration, and knee angles were measured for 6 male subjects during vertical jumping. A simple s...

2013
Saskia H. M. van Romunde Gijs Thepass Hans G. Lemij

Objectives. To determine if hyperopia is a risk factor for primary angle-closure glaucoma (PACG) in the Dutch population and to identify other biometrical parameters as risk factors for PACG including axial length (AL), anterior chamber depth (ACD), and k values. Methods. The study population consisted of PACG patients that had undergone a laser peripheral iridotomy (LPI). The control group con...

Journal: :Proceedings of the Japan Academy 1962

Journal: :Japanese journal of ophthalmology 2000
K Esaki H Ishikawa J M Liebmann D S Greenfield Y Uji R Ritch

PURPOSE To investigate prospectively the relationships between anterior chamber angle configuration and refractive error, axial length, age, and body height in the Japanese. METHODS We studied 65 eyes of 65 subjects (30 men, 35 women) who were either patients at the Ophthalmology Department of Mie University or volunteers. The 65 subjects underwent a complete eye examination, A-scan biometry,...

2007
YUAN LI ZHOU QING HANG ZHANG EE CHON

Three-dimensional L4-L5 finite element (FE) models of three disc heights (9.5mm, 11.5mm, and 13.5mm) and three disc wedge angles (5o, 8 o, and 10 o) were developed to investigate their effect on L4-L5 lumbar motion segment under pure axial compressive loading. The FE predictions indicated that the axial disc displacement and the posterior disc bulge increased greatly with an increase in the ave...

Journal: :Technology in cancer research & treatment 2012
Junjie Yao Konstantin I Maslov Lihong V Wang

Blood flow is a key parameter in studying cancer angiogenesis and hypermetabolism. Current photoacoustic blood flow estimation methods focus on either the axial or transverse component of the flow vector. However, the Doppler angle (beam-to-flow angle) is needed to calculate the total flow speed, and it cannot always be estimated accurately in practice, especially when the system's axial and la...

Journal: :The British journal of ophthalmology 1971
D A Leighton A Tomlinson

Weekers, Lavergne, and Prijot (1958), Davenport (I959), and Perkins and Jay (I960) have all commented on a high incidence of myopia in open-angle glaucoma. Abdalla and Hamdi (1970) showed that myopic eyes have higher ocular tensions than emmetropic eyes in most age groups. The findings of Tomlinson and Phillips (1970) agreed with this, but showed that ocular tension correlated more closely with...

2005
A. Tomlinson

Weekers, Lavergne, and Prijot (1958), Davenport (I959), and Perkins and Jay (I960) have all commented on a high incidence of myopia in open-angle glaucoma. Abdalla and Hamdi (1970) showed that myopic eyes have higher ocular tensions than emmetropic eyes in most age groups. The findings of Tomlinson and Phillips (1970) agreed with this, but showed that ocular tension correlated more closely with...

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