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ocular misalignment

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https://www.readbyqxmd.com/read/28728924/strabismus-measurements-with-novel-video-goggles
#1
Konrad P Weber, Daniel Rappoport, Muriel Dysli, Tanja Schmückle Meier, Guy B Marks, Christopher J Bockisch, Klara Landau, Hamish G MacDougall
PURPOSE: To assess the validity of a novel, simplified, noninvasive test for strabismus using video goggles. DESIGN: Cross-sectional method comparison study in which the new test, the strabismus video goggles, is compared with the existing reference standard, the Hess screen test. PARTICIPANTS: We studied 41 adult and child patients aged ≥6 years with ocular misalignment owing to congenital or acquired paralytic or comitant strabismus and 17 healthy volunteers...
July 17, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28704144/orbital-ultrasonography-in-the-diagnosis-of-neoplastic-extraocular-muscle-enlargement
#2
Giovanni H Greaves, Kym Livingston, Grant T Liu, Kenneth S Shindler, Nicholas J Volpe, Maxwell Pistilli, Sonul Mehta, Madhura A Tamhankar
Neoplastic infiltration of the extraocular muscle (EOM) is a rare condition which can pose a diagnostic dilemma due to its rarity and overlapping ultrasonographic features with orbital myositis. The ultrasonographic features of neoplastic enlargement of EOM have not been systematically studied and previously have been described in only a few case reports. Orbital ultrasonography, in conjunction with the pattern of ocular misalignment, was assessed for its potential role in identifying patients with neoplastic EOM enlargement...
July 13, 2017: Orbit
https://www.readbyqxmd.com/read/28681278/are-we-overlooking-masked-bilateral-congenital-superior-oblique-palsy-in-children-is-it-possible-to-diagnose-before-surgery
#3
Kadriye Erkan Turan, Hande Taylan Sekeroglu, Ali Sefik Sanac
PURPOSE: To describe the characteristics of children who had subsequent contralateral superior oblique underaction (SOUA) and inferior oblique overaction (IOOA) after unilateral inferior oblique weakening surgery and to identify suggestive clinical features for masked bilateral fourth nerve palsy. METHODS: The medical records of children who underwent unilateral inferior oblique tenotomy as a single procedure for unilateral superior oblique palsy were all reviewed...
July 5, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28574497/stepping-into-the-virtual-unknown-feasibility-study-of-a-virtual-reality-based-test-of-ocular-misalignment
#4
N Nesaratnam, P Thomas, A Vivian
IntroductionDissociated tests of strabismus provide valuable information for diagnosis and monitoring of ocular misalignment in patients with normal retinal correspondence. However, they are vulnerable to operator error and rely on a fixed head position. Virtual reality headsets obviate the need for head fixation, while providing other clear theoretical advantages, including complete control over the illumination and targets presented for the patient's interaction.PurposeWe compared the performance of a virtual reality-based test of ocular misalignment to that of the traditional Lees screen, to establish the feasibility of using virtual reality technology in ophthalmic settings in the future...
June 2, 2017: Eye
https://www.readbyqxmd.com/read/28442887/management-of-duane-retraction-syndrome-with-prismatic-glasses
#5
Ebru Demet Aygit, Murat Kocamaz, Asli Inal, Korhan Fazil, Osman Bulut Ocak, Serpil Akar, Birsen Gokyigit
PURPOSE: To report the results of using prismatic glasses for Duane retraction syndrome (DRS). METHODS: Data were obtained from the records of patients who were evaluated during the year 2000 in the Strabismus Unit of the Beyoglu Eye Training and Research Hospital. The average follow-up was 12.2±17.7 months. In all cases, 2 main variables were evaluated: horizontal deviation in the primary position and face turn. Prismatic glasses were provided to patients according to the degree of shift in the primary position...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28325621/-diplopia-an-important-symptom-in-internal-medicine
#6
S Bidot, V Biousse
Diplopia is defined as "double vision" when looking at a single object. Monocular diplopia is related to an ocular disorder and must be differentiated from binocular diplopia which is secondary to ocular misalignment. The examination of the patient with binocular diplopia is often challenging for non-specialists. However, a careful and systematic clinical examination followed by targeted ancillary testing allows the clinician to localize the lesion along the oculomotor pathways. The lesion may involve the brainstem, the ocular motor nerves III, IV or VI, the neuromuscular junction, the extraocular ocular muscles, or the orbit...
March 18, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28300605/a-rapid-quantification-of-binocular-misalignment-without-recording-eye-movements-vertical-and-torsional-alignment-nulling
#7
Kara H Beaton, Mark J Shelhamer, Dale C Roberts, Michael C Schubert
BACKGROUND: Small, innate asymmetries between the left and right otolith organs can cause ocular misalignment with symptoms that include double vision and motion sickness. Additionally, ocular misalignment affects nearly 5% of the US population. We have developed a portable, non-invasive technology that uses subjective perception of binocular visual signals to estimate relative binocular alignment. NEW METHOD AND RESULTS: The Vertical Alignment Nulling (VAN) and Torsional Alignment Nulling (TAN) tests ask subjects to view one red and one blue line on a tablet computer while looking through color-matched red and blue filters so that each eye sees only one of the lines...
March 12, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28286307/strabismus-surgery-outcomes-in-eyes-with-glaucoma-drainage-devices
#8
Carla J Osigian, Kara M Cavuoto, Julia D Rossetto, Mohamed Sayed, Sara Grace, Ta C Chang, Hilda Capo
PURPOSE: To report strabismus surgery outcomes in eyes with prior implantation of glaucoma drainage devices (GDD). METHODS: The medical records of patients who underwent strabismus surgery for ocular misalignment that developed after implantation of a GDD over a 13-year period at a single institution were examined retrospectively. Patient characteristics, deviation types, preoperative measurements, surgical procedures, and postoperative measurements were analyzed...
April 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28255284/clinical-evaluation-of-blepharoptosis-distinguishing-age-related-ptosis-from-masquerade-conditions
#9
REVIEW
Michelle W Latting, Alison B Huggins, Douglas P Marx, Joseph N Giacometti
Aponeurotic ptosis accounts for the majority of acquired ptosis encountered in clinical practice. Other types of ptosis include traumatic, mechanical, neurogenic, and myogenic. In addition to true ptosis, some patients present with pseudoptosis caused by globe dystopia, globe asymmetry, ocular misalignment, or retraction of the contralateral lid. It is particularly important for the clinician to rule out neurologic causes of ptosis such as dysfunction of the third cranial nerve, Horner's syndrome, and myasthenia gravis, as these conditions can be associated with significant systemic morbidity and mortality...
February 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/28254627/inferior-rectus-transposition-a-novel-procedure-for-abducens-palsy
#10
Federico G Velez, Melinda Y Chang, Stacy L Pineles
PURPOSE: Superior rectus transposition has been popularized for the treatment of abduction deficiencies. Potential complications include induced vertical deviation and torsion. A new procedure, the inferior rectus transposition (IRT), may be similarly beneficial for patients at risk for postoperative vertical deviation or incyclotropia. The purpose of this study is to describe the outcomes of patients undergoing IRT. DESIGN: Prospective, interventional case series...
May 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28243072/subconjunctival-orbital-fat-prolapse-and-thyroid-associated-orbitopathy-a-clinical-association
#11
Klio I Chatzistefanou, Christianna Samara, Ioannis Asproudis, Dimitrios Brouzas, Marilita M Moschos, Elisabeth Tsianta, George Piaditis
BACKGROUND: Thyroid associated orbitopathy (TAO) comprises a spectrum of well-recognized clinical signs including exophthalmos, eyelid retraction, soft tissue swelling, ocular misalignment, keratopathy as well as a number of less common manifestations. Subconjunctival fat prolapse is a rare clinical condition occurring typically spontaneously in elderly patients with a mean age of 65-72 years. We describe subconjunctival prolapse of orbital fat as an uncommon clinical association of TAO...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28009406/the-frequency-and-causes-of-abnormal-head-position-based-on-an-ophthalmology-clinic-s-findings-is-it-overlooked
#12
Kadriye Erkan Turan, Hande Taylan Sekeroglu, Irem Koc, Meltem Kilic, Ali S Sanac
PURPOSE: To determine the frequency of abnormal head position (AHP) and identify the underlying causes in patients who presented to an ophthalmology clinic due to any ophthalmologic complaint. METHODS: The medical records of patients who presented with any ophthalmologic symptoms during a 6-month period were prospectively evaluated. In all, 2,710 patients (1,492 female and 1,218 male) aged 6 months-91 years were included in the study. Each patient underwent complete ophthalmologic evaluation...
December 2, 2016: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/27651233/surgical-planning-and-innervation-in-pontine-gaze-palsy-with-ipsilateral-esotropia
#13
Deniz Somer, Fatma Gul Cinar, Ahmet Kaderli, Firdevs Ornek
PURPOSE: To discuss surgical intervention strategies among patients with horizontal gaze palsy with concurrent esotropia. METHODS: Five consecutive patients with dorsal pontine lesions are presented. Each patient had horizontal gaze palsy with symptomatic diplopia as a consequence of esotropia in primary gaze and an anomalous head turn to attain single binocular vision. RESULTS: Clinical findings in the first 2 patients led us to presume there was complete loss of rectus muscle function from rectus muscle palsy...
October 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/27503958/sight-threatening-ocular-diseases-remain-underdiagnosed-among-children-of-less-affluent-families
#14
Joshua D Stein, Chris Andrews, David C Musch, Carmen Green, Paul P Lee
Sight-threatening eye diseases such as strabismus (misaligned eyes) and amblyopia (lazy eye) develop during childhood. The earlier in life these diseases are diagnosed and effectively treated, the greater the chance of preventing irreversible long-term sight loss. Using 2001-14 claims data for nearly 900,000 US children with health insurance, we followed a cohort for up to fourteen years from birth, to assess whether household net worth affected rates of visits to ophthalmologists and optometrists or rates of diagnoses of strabismus and amblyopia...
August 1, 2016: Health Affairs
https://www.readbyqxmd.com/read/27432594/comparison-of-the-adaptive-optics-vision-analyzer-and-the-kr-1-w-for-measuring-ocular-wave-aberrations
#15
Carles Otero, Meritxell Vilaseca, Montserrat Arjona, Joan A Martínez-Roda, Jaume Pujol
BACKGROUND: The aim was to assess the agreement in the measurement of ocular aberrations between a new Adaptive Optics Vision Analyzer (AOVA, Voptica, Murcia, Spain) and a commercial aberrometer (KR-1 W, Topcon, Tokyo, Japan), both based on the Hartmann-Shack technique. METHODS: One experienced examiner measured 29 healthy right eyes nine consecutive times with the two instruments. The individual Zernike coefficients and the root mean square (RMS) of each order from the second to the fifth order, the higher-order RMS (RMSHOA ), the total RMS (RMSTOT ) and the values of the spherical equivalent (M) and Jackson cross-cylinder (J0 and J45 ) were compared...
January 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/27116725/vision-disturbances-in-multiple-sclerosis
#16
Fiona Costello
Visual disturbances are frequently encountered in multiple sclerosis (MS), and include problems with how affected individuals see the world (afferent visual pathway symptoms) and how their eyes move together (efferent visual pathway disorders). Optic neuritis is the most common afferent visual pathway manifestation of MS, from which visual recovery is often incomplete. Visual field defects caused by lesions in the retrochiasmal or retrogeniculate regions of the afferent visual pathway also occur, albeit less frequently...
April 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/26983977/rectus-pulley-displacements-without-abnormal-oblique-contractility-explain-strabismus-in-superior-oblique-palsy
#17
Soh Youn Suh, Alan Le, Robert A Clark, Joseph L Demer
PURPOSE: Using high-resolution magnetic resonance imaging (MRI), we investigated whether rectus pulleys are significantly displaced in superior oblique (SO) palsy and whether displacements account for strabismus patterns. DESIGN: Prospective case-control study. PARTICIPANTS: Twenty-four patients diagnosed with SO palsy based on atrophy of the SO muscle on MRI and 19 age-matched orthotropic control subjects. METHODS: High-resolution, surface coil MRI scans were obtained in multiple, contiguous, quasicoronal planes during monocular central gaze fixation...
June 2016: Ophthalmology
https://www.readbyqxmd.com/read/26983188/-the-eyes-of-the-labyrinth
#18
Christian Van Nechel
Reliable knowledge of one's space is a prerequisite for effective action, and only sensory experience, although not alone sufficient, can provide access to knowledge of reality. All the diferent sensory modalities help to make sense of this mental construct, but visual information, when available, is predominant. This requires stable images and constant updating of one's awareness of gaze direction and position in space at the moment of acquisition. The vestibular system is sensitive to angular and linear accelerations and thus acts as a reference for stability--an inertial base which stabilizes and characterizes the gaze direction and encodes the subject's movement tracking...
June 2014: Bulletin de L'Académie Nationale de Médecine
https://www.readbyqxmd.com/read/26934135/a-robust-and-reliable-test-to-measure-stereopsis-in-the-clinic
#19
Robert F Hess, Rifeng Ding, Simon Clavagnier, Catherine Liu, Cindy Guo, Catherine Viner, Brendan T Barrett, Krupali Radia, Jiawei Zhou
PURPOSE: The purpose of this study was to develop a convenient test of stereopsis in the clinic that is both robust and reliable and capable of providing a measure of variability necessary to make valid comparisons between measurements obtained at different occasions or under different conditions. METHODS: Stereo acuity was measured based on principles derived from the laboratory measurement of stereopsis (i.e., staircase method). Potential premeasurement compensations are described if there is a significant degree of ocular misalignment, reduced visual acuity, or aniseikonia...
March 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/26917064/deficiency-of-depression-in-adduction-clinical-characteristics-and-surgical-management-of-the-inverted-brown-pattern
#20
Justin D Marsh, Pinar Topcu Yilmaz, David L Guyton
PURPOSE: To evaluate the clinical characteristics and surgical management of patients with an "inverted Brown pattern," which is defined clinically as a hypertropia with greatest deviation in down-and-in gaze of the higher eye, having the appearance of superior oblique muscle underaction but without significant inferior oblique muscle overaction. METHODS: The medical records of patients with this misalignment pattern who had cyclovertical muscle surgery at our institution from 2003 through 2015 were retrospectively reviewed; medical records were analyzed for pre- and postoperative motility patterns, fundus torsion, intraoperative findings, and type of strabismus surgery...
February 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
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