Myogenic Disorders

Rowe, Fiona

doi:10.1002/9781118702871.ch16

Cited by 2 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, ductions were graded on a 9-point scale of −4 through to +4 where 0 represents normal full ocular motility, negative for underactions and positive for overactions. 18 Reading was taken as follows: −4 = no movement of the eye(s) past midline (marked), −3 = 75% deficit of movement (moderate), −2 = 50% deficit of movement (small), −1 = 25% deficit of movement (slight), + values represent similar percentages of excess movement. Finally, MRI Brain and Orbit was done in all the cases planned for surgery to rule out LR atrophy.…”

Section: Methodsmentioning

confidence: 99%

Outcome of Jensen Procedure for Complete Abducent Nerve Palsy in Tertiary Eye Hospital of Nepal

Joshi¹,

Suwal

Shrestha³

2023

Nep J Neurosci

View full text Add to dashboard Cite

Introduction: Jensen procedure is done for correcting large amount of esotropia and improving abduction in complete abducent nerve palsy. It is a modified form of transposition surgery where the superior, inferior, lateral rectus muscles are split longitudinally and their lateral halves are respectively joined to the superior halves and inferior halves of lateral rectus with non-absorbable sutures. The study was done to find the surgery outcome of Jensen Procedure in complete abducent nerve palsy. Methods and Materials: A retrospective study of complete abducent nerve palsy of greater than six months duration that underwent Jensen Procedure was performed. Preoperative deviation and postoperative deviation at six weeks and three months were measured and analyzed. Clinical photography and diplopia charting of each case was done before surgery, and postoperatively at three months follow up in all cardinal gazes. Results: Eight eyes of eight patients with the mean age 38.50 ± 22.32 years (16 - 83) underwent medial rectus recession with muscle union (Jensen’s) procedure. Three right eyes and five left eyes were operated. The preoperative esodeviation reduced from mean preoperative 74.37±28.21∆ (30 - 120∆) base out to mean post-operative 12±12.29∆ (-8 – 30∆) base out. The abduction deficit improved from mean preoperative -3.75 ± 0.46 (-4 to -3) to postoperative -1.87 ± 0.99 (-3 to 0). All cases were satisfied with their ocular alignment and cosmesis. Conclusion: The Jensen Procedure can successfully correct the large amount of deviation due to complete abducent nerve palsy with improvement in functionality, abduction deficit and cosmesis.

show abstract

Section: Methodsmentioning

confidence: 99%

Outcome of Jensen Procedure for Complete Abducent Nerve Palsy in Tertiary Eye Hospital of Nepal

Joshi¹,

Suwal

Shrestha³

2023

Nep J Neurosci

View full text Add to dashboard Cite

show abstract

“…The panography method uses a cylindrical surface, which is placed on the surface of the test target, to induce image separation in each eye and provide a stereoscopic feel. The subject does not need to be given glasses with special filters [21][22][23].…”

Section: Separation Of Strategies / Techniquesmentioning

confidence: 99%

“…The test should be performed with only one eye open at a time, but with both eyes open at the same time, to evaluate the position where the pencil is placed each time. Although the test is simple and fun for the test subjects, especially the children, it will only detect gross weaknesses of the stereotaxis and should in no way be regarded as an accurate screening test [4,5,17,23,24]. 2).…”

Section: Pencils Lang Testmentioning

confidence: 99%

See 1 more Smart Citation

Stereoscopic Vision & Testing Techniques – Overview

Evangelos

Plakitsi

Chatzipantelis

2020

BJSTR

View full text Add to dashboard Cite

Binocular vision we call the combined use of the two eyes to create a single and unique brain impression [1][2][3]. Essentially, it is the set of brain processes that result in the integration of the two retinal images and therefore in their perception as one.When we see binocular, then, an object in front of us is formed by an image in the central well of each retina, resulting in the formation of an image in each eye. These two images are transmitted via the visual pathways to the cerebral venous lobe, are sensory integrated and perceived as one.Binocular vision, developed and practiced during the first years of life, gives us an important advantage, the ability to see and observe space in three dimensions, that is, it gives us a sense of depth. This ability is called "stereoscopic vision". Other benefits of binocular vision are the widening of the field of vision, as well as an increase in visual acuity, which is slightly better than single-eyed. Binocular Vision GradesClaude Worth has classified binocular vision into three grades:a) First-degree binocular vision is the "simultaneous perception" of the two retinal images, but not necessarily their integration into one. b) Second-degree binocular vision is the ability to integrate two similar retinal images, that is, their sensory "identification". c)Third degree binocular vision is stereoscopic vision or stereopsis Stereo VisionStereoscopic vision is called the ability to classify objects we see in the 3D world. Essentially is the ability to estimate depth [1,[4][5][6][7]]. An object, located in the middle line in front of the eyes, forms slightly dissimilar images on each retina, on each eye. This is due to the transverse distance, so each eye sees the object from a different location. If the object is within the bounds of Panum's space, that is, the area that extends forward and behind the chopper and within which a single binocular vision is possible, then the images, although dissimilar, may be subjected to sensory identification.This matching of the two dissimilar images leads to the perception of the third dimension, stereoscopic vision and therefore depth [1].An object looks flat because it is projected to the corresponding retinal areas causing zero horizontal inequality. The non-zero difference creates the stereoscopic depth and is divided into split and nonlinear [4]. The split is created by the objects in front of the horopter, that is, by the nearby objects. This is called as, the oneeyed image of the object observed with the right eye is moved to

show abstract

Myogenic Disorders

Cited by 2 publications

References 26 publications

Outcome of Jensen Procedure for Complete Abducent Nerve Palsy in Tertiary Eye Hospital of Nepal

Outcome of Jensen Procedure for Complete Abducent Nerve Palsy in Tertiary Eye Hospital of Nepal

Stereoscopic Vision & Testing Techniques – Overview

Contact Info

Product

Resources

About