Possible Causes for Nystagmus Decreases on Convergence Autosomal Dominant Congenital Nystagmus 3 Clinical Characteristics Ocular Features: The nystagmus is horizontal in type and accentuated by fixation and decreased by convergence. [disorders.eyes.arizona.edu] You are here Search For A Disorder Clinical Characteristics Ocular Features: The nystagmus is horizontal in type and accentuated by fixation and decreased by convergence. [disorders.eyes.arizona.edu] It is typically a horizontal jerk nystagmus and it may be associated with abnormal head movement and decreases in intensity with convergence. [medical-dictionary.thefreedictionary.com] Convergence Nystagmus The nystagmus decreases on convergence but increases on covering one eye. There may be abnormal eye posture in an attempt to keep the eyes in the null point. [mrcophth.com] If nystagmus decreases at near fixation, prism adaptation determines the largest amount of prism-induced convergence that decreases the nystagmus without creating diplopia [hindawi.com] Occlusion of cither eye during fixation of near targets led to divergent drift of the covered eye and a decrease in nystagmus. [journals.lww.com] Autosomal Dominant Congenital Nystagmus 7 Clinical Characteristics Ocular Features: The nystagmus is horizontal in type and accentuated by fixation and decreased by convergence. [disorders.eyes.arizona.edu] You are here Search For A Disorder Clinical Characteristics Ocular Features: The nystagmus is horizontal in type and accentuated by fixation and decreased by convergence. [disorders.eyes.arizona.edu] Congenital nystagmus remains horizontal in vertical gaze and usually is decreased at near with convergence. [medtextfree.wordpress.com] Hereditary Nystagmus Nystagmus may decrease when the eyes converge to read. [lowvision.org] […] intensity decreases when converging to view near objects in around 44% of individuals with IN. 8,12 However, there is no significant improvement in near VA at this time, [dovepress.com] Another use of prisms is for convergence stimulation (base out prismin front of both eyes) so that the decreased nystagmus intensity with induced convergence may increase [omicsonline.org] X-Linked Congenital Nystagmus Type 5 All patients showed gaze-evoked nystagmus (GEN) and reversed optokinetic nystagmus. In 2 patients (patient 1 and 4), the nystagmus decreased on convergence. [nature.com] […] intensity decreases when converging to view near objects in around 44% of individuals with IN.8,12 However, there is no significant improvement in near VA at this time, despite [dovepress.com] Head turn to achieve null point Decreases with convergence Increases with fixation 18. Reverse response to OKN stimulus ( fast phase in direction of moving OKN drum [slideshare.net] Vestibular Nystagmus Infantile (Congenital) Nystagmus • Conjugate, rarely rotary or vertical • Jerk or Pendular • Null point • Decrease with convergence • Increases with fixation • Reversal of [slideshare.net] It is typically a horizontal jerk nystagmus and it may be associated with abnormal head movement and decreases in intensity with convergence. [medical-dictionary.thefreedictionary.com] Nystagmus velocity clearly was decreased by as little as 10° of convergence. Alteration of accommodative effort had no effect on nystagmus intensity. [healio.com] Congenital Nystagmus […] intensity decreases when converging to view near objects in around 44% of individuals with IN. 8,12 However, there is no significant improvement in near VA at this time, [dovepress.com] Another use of prisms is for convergence stimulation (base out prismin front of both eyes) so that the decreased nystagmus intensity with induced convergence may increase [omicsonline.org] In early infancy to use the dampening effect of convergence to decrease the ocular movement. [eyedr4kids.com] Oculodentodigital Dysplasia Less frequent ocular findings are nystagmus, palpebral fissure hypoplasia, epicanthal folds and convergent strabismus. [orpha.net] Ophthalmic anomalies include decreased visual acuity, microphthalmia, microcornea, cataracts, glaucoma, iris abnormalities and optic atrophy. [orpha.net] Malnutrition Nystagmus may decrease when the eyes converge to read. [eyeassociates.com] Low vision specialists can add prism to induce convergence artificially and thus reduce the nystagmus in some patients. [eyeassociates.com] Nystagmus acquired later in life may cause vertigo or dizziness like effects from the sensation of motion in the vision. [eyeassociates.com] Obstructive Sleep Apnea Nystagmus may decrease when the eyes converge to read. [eyeassociates.com] Low vision specialists can add prism to induce convergence artificially and thus reduce the nystagmus in some patients. [eyeassociates.com] Nystagmus acquired later in life may cause vertigo or dizziness like effects from the sensation of motion in the vision. [eyeassociates.com] Spasmus Nutans […] intensity decreases when converging to view near objects in around 44% of individuals with IN. 8,12 However, there is no significant improvement in near VA at this time, [dovepress.com] It decreases when the child's eyes converge or move inward. [healthofchildren.com] Head turn to achieve null point Accentuation with distant fixation and decreased by convergence Abolished in sleep No oscillopsia Strabismus present in 15% patients [slideshare.net] Medial Sclerosis During horizontal gaze, adduction of one eye is decreased, with nystagmus of the other (abducting) eye; convergence is intact. [msdmanuals.com] Hereditary Spastic Paraplegia The nystagmus diminished briefly after blinks and horizontal saccades, and decreased during eccentric gaze and convergence. [ncbi.nlm.nih.gov] Vibratory stimuli decreased the nystagmus mostly in the left but not in the right eye. [ncbi.nlm.nih.gov] During lateral gazes, the PN increased in the abducting eye, but decreased in the adducting eye. [ncbi.nlm.nih.gov] Communicating Hydrocephalus The ocular motility disorder consisted of severe vertical gaze palsy and convergence retraction nystagmus. [ncbi.nlm.nih.gov] On the other hand, striatal uptake did not decrease in (18)F-dihydroxyphenylalanine positron emission tomography, and anti-Parkinsonian drugs were not effective. 99mTc-ethyl [ncbi.nlm.nih.gov] Brain Stem Infarction […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Autosomal Dominant Congenital Nystagmus Type 4 Another use of prisms is for convergence stimulation (base out prismin front of both eyes) so that the decreased nystagmus intensity with induced convergence may increase [omicsonline.org] It is typically a horizontal jerk nystagmus and it may be associated with abnormal head movement and decreases in intensity with convergence. [medical-dictionary.thefreedictionary.com] It decreases when the child's eyes converge or move inward. [healthofchildren.com] Disorder of Basilar Artery […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Vertebrobasilar Insufficiency […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Multiple Sclerosis During horizontal gaze, adduction of one eye is decreased, with nystagmus of the other (abducting) eye; convergence is intact. [msdmanuals.com] Vertebral Artery Thrombosis […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Infratentorial Tumor […] of the pupillary response, convergence nystagmus) are classically noted ( 22 ). [radiologykey.com] Pineal region tumors produce hydrocephalus by compressing the aqueduct of Sylvius; specific ocular signs (i.e., the Parinaud syndrome: decreased upward gaze, near-light dissociation [radiologykey.com] Millard-Gubler Syndrome […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Foville Syndrome […] palsy, or convergence-retraction nystagmus. [emedicine.medscape.com] CN III palsy and pupillary abnormalities, including small pupils with decreased light reactivity (diencephalic), large/mid-position and fixed pupils (midbrain), and ectopic [emedicine.medscape.com] These patients can also demonstrate oculomotor abnormalities, most commonly of the vertical gaze, such as gaze palsy, skew deviation, convergence spasm resulting in pseudoabducens [emedicine.medscape.com] Increased skull ossification Exophthalmos, optic atrophy, reduced visual fields, convergent strabismus, nystagmus, chronic headache, and decreased sensory function of the trigeminal nerve have been described [slideheaven.com] Van Buchem Disease Exophthalmos, optic atrophy, reduced visual fields, convergent strabismus, nystagmus, chronic headache, and decreased sensory function of the trigeminal nerve have been described [slideheaven.com] Intellectual Disability - Spasticity - Ectrodactyly Syndrome Nystagmus 3, Congenital, AD Clinical Characteristics Ocular Features: The nystagmus is horizontal in type and accentuated by fixation and decreased by convergence. [disorders.eyes.arizona.edu] There may be components of jerk, circular, and pendular nystagmus. The nystagmus may be present at birth. Systemic Features: No systemic disease is present. [disorders.eyes.arizona.edu] Congenital Nystagmus 2, Autosomal Dominant It decreases when the child's eyes converge or move inward. [healthofchildren.com] Eyelid closure or convergence, usually suppress it, but occasionally the nystagmus is evoked by viewing a near target. [repository.countway.harvard.edu] • Eyelid closure or convergence, usually suppress it, but occasionally the nystagmus is evoked by viewing a near target. • Often nystagmus decreases when the eyes are moved [collections.lib.utah.edu] X-Linked Congenital Nystagmus Type 1 It decreases when the child's eyes converge or move inward. [healthofchildren.com] Nystagmus velocity clearly was decreased by as little as 10° of convergence. Alteration of accommodative effort had no effect on nystagmus intensity. [healio.com] Most of these cases of nystagmus develop because of poor vision and do not have an underlying neurological cause. [healthofchildren.com] Infantile Symmetrical Thalamic Degeneration In 7% nystagmus actually increases in upgaze and decreases in downgaze (1273,1275,1278). [neuroophthalmology.ca] In upgaze the nystagmus usually decreases or is absent, though in a small number it reverses direction to upbeat (1273,1276). [neuroophthalmology.ca] Convergence increases nystagmus in 67% (1278), and in rare cases can change downbeat to upbeat nystagmus (1275) or vice versa (1278,1279). [neuroophthalmology.ca] Autosomal Dominant Osteosclerosis Type Worth Exophthalmos, optic atrophy, reduced visual fields, convergent strabismus, nystagmus, chronic headache, and decreased sensory function of the trigeminal nerve have been described [slideheaven.com]