Divergence insufficiency is a comitant esotropia that is present at distance but not at near, with full ductions and versions. Demer JL. These conditions that affect convergence or divergence may cause symptoms such as seeing double at near or far while viewing an object. Reproduction in whole or in part without permission is prohibited. Although successfully prescribing it can sometimes seem like a time-consuming and daunting task, the following tips can help you smoothly incorporate the use of prism for binocular vision conditions into your practice for the best outcomes. All Rights Reserved. as their fusional vergence ranges expand. When nonisolated, divergence insufficiency is most often reported in patients with intracranial hypertension, a neurologic condition often associated with sixth cranial nerve palsy.8,12-14,16 Some investigators have recorded slow abducting saccades in patients with signs consistent with divergence insufficiency, suggesting that abducens palsy was the cause of esotropia in these individuals.14 However, this finding has not been reproduced.11,17. LRosenbaum Interestingly, they found that the relative proportion of SES was just 4.7% in patients younger than 50 years but it increased to 60.9% in patients older than 90. HMDivergence paralysis following head trauma. Motion sickness or dizziness ( vertigo) Headache . Although each method has its advantages and disadvantages, they all suffer from being subjective. Since the cardinal symptom of divergence insufficiency is double vision, this symptom was used to establish the total duration of the follow-up. GTDJohnston Convergence Insufficiency | National Eye Institute Divergence insufficiency revisited: natural history of idiopathic cases Many affected patients experience spontaneous resolution of double vision within several months. Different surgical approaches exist when dealing with the components of sagging eye syndrome including divergence insufficiency esotropia and cyclovertical strabismus. Certain factors are associated with exotropia, including genetics and health conditions. The first hurdle is ensuring your patient is comfortable with wearing spectacles. The patient with divergence insufficiency presents himself complaining of double vision for distance, which increases with distance. This ocular misalignment has two main types: esotropia and exotropia. They use head thrusts to shift fixation. Our eye doctors. No clear sex predilection has been identified for the primary form of the condition. Divergence insufficiency associated with high myopia - PubMed 126. To begin therapy, many therapists will focus first on normalizing the accommodative system. Peripheral double pictures Usually double vision arises from a squint deviation of the eyes and is checked with a torch and a red glass before one eye to separate the pictures. However, they had a recurrence rate of almost 7% over their mean follow-up period of 39 months. Effectiveness of base in prism for presbyopes with convergence insufficiency. To determine the natural history of primary divergence insufficiency and to identify clinical features that distinguish patients with this neurologically isolated form of divergence insufficiency from those harboring neurologic disorders. 2005;9:36. The orbital layer, inserts on the pulley, not on the globe. of negative and positive fusional vergence. an electromyographic study. [4]A dense band iss present from the medial rectus to the inferior pulleys (MRIR band) and from the medial rectus to the superior rectus pulleys (MRSR band). A primary vertical deviation is the same in presence and size whether the patient is strabismic or aligned. Bradley J. Katz, MD; Joseph L. Demer, MD, PhD; Robert A. Clark, MD: Sagging Eye Syndrome. Most trial lens sets come with prism lenses, but for larger angles of strabismus, it may be helpful to use a Fresnel prism trial set. In addition, patients with SES usually have normal horizontal saccades and normal horizontal ductions. This patient continued with vision therapy to help improve her sensory and motor fusion with the hope of eventually titrating down the amount of prism she wears. Divergence insufficiency can vary in severity, from minor deficits to complete divergence paralysis. When considering whether it is appropriate to prescribe vertical prism for a patient with combined horizontal and vertical deviations, particularly for a patient with intermittent strabismus, first identify whether the vertical deviation is primary or secondary. Neuroimaging was not performed in 4 of these patients so it is possible that some of them had unsuspected lesions. The use of MRI imaging is confirmatory rather than "required" to make the diagnosis, since diagnosis is mainly clinical. along with the fusional vergence system to create a 3-D object. Methods: We investigated 20 cases of high myopia (>-6 D) with divergence insufficiency, 20 cases of high myopia without double vision, and 10 normal cases as controls. Normalizing accommodation is important because the accommodative and vergence systems are tightly correlated. This recommendation is based on the small size of the study population, the problems inherent in a retrospective investigation, and the grave consequences of failing to identify other neurologic signs. They concluded that GVRT performed with intraoperative monitoring under topical anaesthesia, precise correction of hypertropia up to 10 can be achievable. ARKline What is convergence insufficiency? 131. In this study, they reiterate that a topical anesthesia with intra-operative re-assessment of deviation[15]. Goldberg 13.119). Convergence Insufficiency. Br J Ophthalmol. Prism can be a powerful treatment for many conditions and for many patients, specifically for those who suffer from asthenopia or diplopia. The most common symptoms are: Tired or sore eyes Blurry vision Double vision Headaches Trouble concentrating You may also have trouble reading. Divergence insufficiency - definition of divergence insufficiency by The eyes deviate horizontally toward a cortical lesion, the eyes deviate horizontally away from a cortical seizure focus, and the eyes deviate horizontally away from a pontine lesion. It is usually benign. Educating patients on the benefits of prism wear is key in helping get them on board in these cases. American Academy of Ophthalmology. Since divergence is an active process, not a passive one associated with relaxation of the medial rectus muscles,5 some investigators hypothesize that a "divergence center" must exist. SHarbison [5] The ligament was ruptured in 64% of orbits with DPE and 91% of orbits with CVS. Divergence Insufficiency Revisited: Natural History of Idiopathic Cases and Neurologic Associations. Patients may also present with ductional deficits depending on the grade of muscle displacement. Convergence Insufficiency - American Academy of Ophthalmology Convergence insufficiency is a common eye coordination problem in which the eyes drift outward when reading or doing near point work. Strabismus, or hypertropia, is a condition when one or both of the eyes are not properly aligned. Bielchovsky and Duane favored the presence of a dedicated active divergence center, while Drs. [13]In their case series patients with lateral incomitance, the adjustable suture was generally placed on the MR opposite the horizontal direction of the greatest ET. Head trauma 3. The aspect of divergence paralysis or divergence insufficiency is stated as esotropia or high esophoria at a distance with much lower esophoria or near to normal fixation. Through her full plus spectacles, she still had a 14 PD constant right esotropia and a 2 PD constant right hypotropia. Vision therapy exercises aimed at strengthening and normalizing accommodation can be found in Part 4 of this series. Symptoms resolved in 8 (40%) of 20 patients after a median of 5 months. 126. Treatment options include correction with base-out prisms for distance, Tomasz A. Wiraszka, MD, and Praveena Gupta, OD, PhD, FAAO, Galveston, Texas, April 2015 Wills Eye Resident Case Series, Wills Eye Resident Case Series - Diagnosis and Discussion, November 2014 Wills Eye Resident Case Series, February 2016 Wills Eye Resident Case Series - Diagnosis & Discussion. Determining how much prism is required for improved fusion, or fusion prism, is another method for prescribing prism for your strabismic patients. If you can remember the old newspaper comics that had a green image with a red image overlying it that would turn into a 3-D image if you put on red/blue 3-D glassestranaglyphs are made similarly. Biousse V and Newman NJ. 13.121). Sagging Eye Syndrome. Since most of the patients have good fusional capacities they do not experience double vision for near with that said these patient can likely manage without the need for intervention. PDF CLINICAL SCIENCES Divergence Insufficiency Revisited - JAMA Roughly half of the patients experienced spontaneous resolution of diplopia after several months. When prescribing ground-in prism, high index lenses, plastic frames and frames that are smaller in size help improve the weight and cosmesis of the lenses. The radiographic and laboratory evaluation of the 20 patients with primary divergence insufficiency did not reveal any unsuspected disorders. Ghanchi To prevent double vision, the individual exerts extra effort to make the eyes turn back in. J AAPOS. Diplopia Developed in Later Life, An Ophthalmologic Approach If a patient sees four dots in free space or gives a diplopia response but is able to fuse with prism, perform a unilateral cover test. Bothun and Archer reported a series of 8 patients who underwent bilateral medial rectus recessions for distance esotropias of 1235; 5 patients had satisfactory results with collapse of the distance-near deviation from 15 pre-operatively to 5 postoperatively. Ductions should be tested with the fellow eye covered. may complain of intermittent double vision (diplopia) when looking at something in the distance, frequent wandering of the eyes, headaches, motion sickness, and eye fatigue that comes and goes and can vary from day-to-day depending on how tired the individual is. Smith A Maddox rod was also used to determine the near point of orthophoria in most patients. To determine the natural history of primary divergence insufficiency and to identify clinical features that distinguish patients with this neurologically isolated form of divergence insufficiency from those harboring neurologic disorders. What are causes of convergence insufficiency? A near card is brought toward the patients nose until the patient sees double. All Rights Reserved. Progressive supranuclear palsy. What test will usually differentiate convergence spasm from a bilateral 6th nerve palsy? Fresnel prism, however, degrades visual acuity and contrast sensitivity, and some patients may not find it cosmetically appealing.12 A significant decrease in visual acuity through the Fresnel lens can be seen at larger prism powers, particularly at those greater than 12 PDs.13 When trialing Fresnel prism, it is advisable to only place the Fresnel over one eye so that the patient retains good binocular visual acuity with the prism in place. Patients were categorized into 2 groups, primary (ie, neurologically isolated based on clinical criteria) and secondary (ie, associated with a neurologic or systemic disorder). From the Departments of Neurology and Ophthalmology, Marshfield Clinic, Marshfield, Wis. Chaudhuri Z, Demer JL. American Academy of Ophthalmology. How is convergence insufficiency treated? Divergence Insufficiency Revisited: Natural History of Idiopathic Cases and Neurologic Associations | Neurology | JAMA Ophthalmology | JAMA Network ObjectivesTo determine the natural history of primary divergence insufficiency and to identify clinical features that distinguish patients with this neurologica [Skip to Navigation] Prism is prescribed to these patients to partially or completely eliminate the motor demand so they are able to fuse. It is also stated that primary divergence insufficiency does not possess any other neurological symptoms as well as signs. It is seen in young children who have a defect or absence of voluntary horizontal saccades to visual stimuli. Convergence describes the way our eyes move together and point inward when we look at near objects. et al. Tamhankar MA, Ying GS, Volpe NJ. METraviesa Accordingly, I would recommend deferring consideration of strabismus surgery in this population for a sufficiently prolonged period of time to determine whether the esotropia might resolve spontaneously. Although ophthalmoplegia associated with temporal arteritis has been rarely attributed to brainstem23 or ocular motor nerve injury,24 most cases are thought to result from extraocular muscle ischemia.25,26 The association of divergence insufficiency and temporal arteritis in these 2 cases emphasizes that the diagnostic signs of this ocular motor disturbance are not localizing and could occur in other disorders associated with local injury of extraocular muscles, such as myasthenia gravis, as was identified in 1 of the patients of Lepore.15, Divergence insufficiency was observed in 4 patients with pseudotumor cerebri. R. London. 133. PCBurian This period included the duration of diplopia prior to the first evaluation in addition to the duration of diplopia until either resolution of it or until the last follow-up evaluation. Nonparetic Diplopia - EyeWiki 129. Recognizing TBI-related Vision Disorders - Review of Optometry Temporal GVRT was chosen for the IR and nasal GVRT for the SR. All patients had undergone a general neurologic examination by a board-certified neurologist (D.M.J.). Other associated symptoms can include asthenopia of panoramic type. [5] Initially, most patients only notice intermittent binocular diplopia at long distances, such as in the theater or while driving. In high-myopia patients without double vision, the ocular axis length was 27.6 1.3 mm. Results In this example, the patient will be asked to either relax his or her eyes to put the lion in the cage (diverge) or stimulate his or her eyes to put the lion in the cage (converge). In support of that hypothesis, some investigators have reported clinical-radiographic and clinical-pathologic correlations of patients with divergence insufficiency associated with focal lesions, usually of the pons and midbrain,7-10 but also in other locations, such as the craniovertebral junction.8,11 On the other hand, patients with divergence insufficiency and a variety of diffuse brain injuries have also been described.8,12-15 The site of this elusive region, if in fact such a region exists, remains undefined. These questions are archived at https://neuro-ophthalmology.stanford.eduFollow https://twitter.com/NeuroOphthQandA to be notified of new neuro-ophthalmology questions of the week.Please send feedback, questions, and corrections to tcooper@stanford.edu. . MGeorge 127. Unilateral lateral rectus resection for horizontal diplopia in adults with divergence insufficiency. Divergence insufficiency is associated with systemic and neurological disorders, so we must rule out any underlying conditions that may be causing it. 8 (89%) had successful with postoperative vertical alignment and 4 (50%) were successfully corrected, with <5 of cyclotorsion postoperatively. JWStockbridge 2012. MGallaway All patients with double vision routinely were assessed for the speed of saccades and for the presence of nystagmus to identify signs of abducens nerve palsy or internuclear ophthalmoplegia. Extraordinary symptoms equivalent to diplopia 2.3.1. and asking the patient to converge or diverge will work on the focusing system and expand the eyes abilities to converge or divergehence helping with an insufficiency problem. Visual loss in pseudotumor cerebri: follow-up of 57 patients from five to 41 years and a profile of 14 patients with permanent severe visual loss. Stern 2011;31(3):206-9. Divergence insufficiency is the opposite problem, accommodation will be worked on first to ensure it is equal between the two eyes, basic vergence exercises will be added in. [10] In 2013, Stager et al. Similarly, another dense band is found from the Superior rectus to the lateral rectus pulleys (LRSR band). Convergence and Divergence - Vivid Vision If an intermittent horizontal strabismus patient has a primary vertical deviation, vertical prism may help improve their ability to fuse the horizontal deviation. What is convergence spasm? Eight (40%) of the 20 patients recalled such an event, including a viral pro-drome in 3 patients, minor head trauma in 2 patients, and hospitalization for an unrelated illness in 3 pa-tients. However, the cause of convergence insufficiency is often unknown. Signs typical of divergence insufficiency were identified in 9 patients without intracranial hypertension (Table 2), including 2 with temporal arteritis. In a recent study by Goseki et.al. Graded Vertical Rectus Tenotomy For Small Angle Cyclovertical Strabismus in Sagging Eye Syndrome. 2012;49(4):222-8. 2016. Her medical history was unremarkable, and her ocular history was remarkable only for low myopia, for which she wore glasses.