Related Experiment Video
Updated: Jan 31, 2026
Quantification of Optic Nerve Cross Sectional Area on MRI: A Novel Protocol using Fiji Software
Published on: September 4, 2021
The Effects of Optic Nerve Head Tilt on Visual Field Defects in Myopic Normal Tension Glaucoma: The Intereye
Jae Hwan Choi1, Jong Chul Han, Changwon Kee
1Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Purpose:
To evaluate whether optic nerve head (ONH) tilt has relations with the visual field (VF) defect in myopic normal tension glaucoma (NTG).
Materials And Methods:
Comparisons of variables were performed between less and more advanced VF defect groups in bilateral myopic NTG. Vertical, horizontal, maximal ONH tilt angles and angular location of maximal ONH tilt were measured using fundus photography and spectral-domain optical coherence tomography. Logistic regression analysis was performed to evaluate variables associated with more advanced VF defect in bilateral myopic NTG.
Results:
In total, 112 patients who have bilateral myopic NTG were included. Significant correlation was found between horizontal ONH tilt angle and angular location of maximal ONH tilt (R=0.45; P<0.001). In logistic regression analysis, a larger number of medications, greater horizontal ONH tilt, and greater angular location of maximal ONH tilt were associated with more advanced VF defect in myopic NTG (P=0.004, 0.014, 0.037, respectively). The location of VF defect was associated with the horizontal ONH tilt direction and angular location of maximal ONH tilt (κ=0.63, P<0.001; κ=0.48, P<0.001, respectively).
Conclusions:
The horizontal ONH tilt and angular location of maximal ONH tilt correlated with the severity and location of VF defects in myopic NTG eyes.
Related Concept Videos
01:10Tension
02:57Surface Tension, Capillary Action, and Viscosity
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
01:25Glaucoma: Overview
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
01:27Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
01:23Lumber Defects
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...