Visual Loss

2013 ◽  
Author(s):  
Jess T. Whitson
Keyword(s):  
Visual Acuity ◽  
Visual Loss ◽  
Vision Loss ◽  
Neovascular Glaucoma ◽  
Shunt Surgery ◽  
Shunt Implantation ◽  
Shunt Group ◽  
Long Term Follow Up ◽  
Tube Shunt

Tube shunt surgery use has increased significantly in recent years. Once reserved as a treatment option for more refractory types of disease, such as uveitic or neovascular glaucoma, or for eyes that had failed one or more trabeculectomies, tube shunts are now being used by some surgeons in place of trabeculectomy as a first-line surgical alternative in eyes with other less aggressive or less difficult to control forms of glaucoma. Visual loss can occur following tube shunt implantation as a result of complications during the postoperative period or from the progression of underlying disease (see Table 40.1). Although tube shunt implantation is associated with similar postoperative complications as trabeculectomy surgery, such as hypotony, hemorrhage, and failure to control IOP, there are several unique complications that may develop with the use of tube shunts, many of which may result in vision loss. Visual loss following tube shunt surgery is not uncommon. A large, systematic literature review of tube shunts by Hong and coworkers reported rates of vision loss following tube shunt surgery (defined as loss of 2 or more lines of visual acuity at last follow-up) ranging from (mean [SD]) 24 (7)% with the Ahmed™ Glaucoma Valve (New World Medical, Inc., Rancho Cucamonga, California) to 33 (18)% with the Molteno® implant (Molteno Ophthalmic Ltd., Dunedin, New Zealand). In the Tube Versus Trabeculectomy (TVT) Study, an ongoing, prospective, randomized clinical trial that is comparing the Baerveldt® 350 mm tube shunt (Abbott Medical Optics, Inc., Santa Ana, California) to trabeculectomy with mitomycin-C (MMC) in eyes with previous trabeculectomy and/or cataract surgery, vision loss (defined as loss of 2 or more lines of Snellen visual acuity) occurred in 31 of the 107 patients (29%) in the tube shunt group. The occurrence of any postoperative complication significantly increased the risk of vision loss (p < 0.001), and this risk correlated to the number of complications. Corneal decompensation has been reported to occur in up to 30% of patients during long-term follow-up after tube shunt surgery.

scholarly journals Loss of Visual Acuity after Successful Surgery for Macula-On Rhegmatogenous Retinal Detachment in a Prospective Multicentre Study

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Salvatore Di Lauro ◽  
Melissa Castrejón ◽  
Itziar Fernández ◽  
Jimena Rojas ◽  
Rosa M. Coco ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Retinal Detachment ◽  
Visual Loss ◽  
Vision Loss ◽  
Multicentric Study ◽  
Prospective Multicentre Study ◽  
Snellen Chart ◽  
Pars Plana ◽  
Phakic Eyes

Purpose. To quantify the frequency of visual loss after successful retinal detachment (RD) surgery in macula-on patients in a multicentric, prospective series of RD.Methods. Clinical variables from consecutive macula-on RD patients were collected in a prospective multicentric study. Visual loss was defined as at least a reduction in one line in best corrected visual acuity (VA) with Snellen chart. The series were divided into 4 subgroups: (1) all macula-on eyes (n=357); (2) macula-on patients with visual loss at the third month of follow-up (n=53) which were further subdivided in (3) phakic eyes (n=39); and (4) pseudophakic eyes (n=14).Results. Fifty-three eyes (14.9%) had visual loss three months after surgery (n=39phakic eyes;n=14pseudophakic eyes). There were no statistically significant differences between them regarding their clinical characteristics. Pars plana vitrectomy (PPV) was used in 67.2% of cases, scleral buckle in 57.7%, and scleral explant in 11.9% (36.1% were combined procedures).Conclusions. Around 15% of macula-on RD eyes lose VA after successful surgery. Development of cataracts may be one cause in phakic eyes, but vision loss in pseudophakic eyes could have other explanations such as the effect of released factors produced by retinal ischemia on the macula area. Further investigations are necessary to elucidate this hypothesis.

Scleral Perforation

2013 ◽  
Author(s):  
Jorge L. Rivera-Velez
Keyword(s):  
Rare Complication ◽  
Scleral Buckling ◽  
Shunt Surgery ◽  
Santa Ana ◽  
Shunt Implantation ◽  
Increased Risk ◽  
Shunt Group ◽  
Risk Patients ◽  
Tube Versus ◽  
Tube Shunt

Scleral perforation during tube shunt implantation is a rare complication. In a recent publication of the Tube Versus Trabeculectomy Study, 3 out of 107 patients in the tube shunt group had scleral perforation during placement of a device. Merino-de-Palacios et al reported scleral perforation during tube shunt surgery in 1 of 86 eyes. The type of device used does not seem to be important in the incidence of scleral perforation. In the Tube Versus Trabeculectomy Study, Baerveldt® devices (Abbott Medical Optics, Inc., Santa Ana, California) were used exclusively, and Ahmed™ Glaucoma Valves (New World Medical, Inc., Rancho Cucamonga, California) and Molteno® implants (Molteno Ophthalmic, Ltd., Dunedin, New Zealand) were used in the study by Merino-de-Palacios et al. Serious sequelae, such as endophthalmitis or retinal detachment, have not been reported in recent literature following scleral perforation during tube shunt placement; nonetheless, this complication should be prevented and, if it does occur, managed promptly. Patients who are believed to have an increased risk for scleral perforation are myopic patients (>-6.00 D) and patients with previous extraocular muscle surgery. Patients with previous scleral buckle surgery, autoimmune diseases, scleritis, or any other conditions that cause or perpetuate thinning of the sclera potentially increase the risk. Patients with previous scleral buckling procedures who require tube shunt surgery will benefit from having the device anchored behind the buckle or directly over the buckle. No attempt should be made to dissect under the buckling device, as dissection may lead to the buckle anchoring sutures perforating the eye. The most common site for tube shunt implantation is the superotemporal quadrant, between the superior and lateral rectus muscles. This location offers the benefit of having the implant hidden under the superior eyelid, no oblique muscles in the region, and better intraoperative exposure, allowing the surgeon to place the implant farther from the limbus. The plate of the implant is usually attached to the sclera approximately 8–10 mm posterior to the limbus. This is also the thinnest portion of the sclera. Exposure when implanting the tube shunt is probably the most important factor in avoiding scleral perforation.

Long term follow-up of visual acuity and incidence of subretinal neovascularization in Mactel Type 2 in 82 Eyes

2021 ◽  
pp. 1-6
Author(s):  
Kerul Marsonia ◽  
Kedarisetti Kiran Chandra ◽  
M. Hasnat Ali ◽  
Jay Chhablani ◽  
Raja Narayanan
Keyword(s):  
Visual Acuity ◽  
Subretinal Neovascularization ◽  
Long Term Follow Up

Long-term Follow-up of Visual Acuity in Eyes With Stage 5 Retinopathy of Prematurity After Closed Vitrectomy

1995 ◽  
Vol 120 (3) ◽  
pp. 308-316 ◽  
Author(s):  
YUKI FUCHINO ◽  
HIDEYUKI HAYASHI ◽  
TOSHIHIRO KONO ◽  
KENJI OHSHIMA
Keyword(s):  
Visual Acuity ◽  
Retinopathy Of Prematurity ◽  
Long Term Follow Up

scholarly journals Clinical Features of Iris Cysts in Long-Term Follow-Up

2021 ◽  
Vol 10 (2) ◽  
pp. 189
Author(s):  
Joanna Konopińska ◽  
Łukasz Lisowski ◽  
Zofia Mariak ◽  
Iwona Obuchowska
Keyword(s):  
Visual Acuity ◽  
Ultrasound Biomicroscopy ◽  
Anatomical Location ◽  
Long Term Follow Up ◽  
Temporal Quadrant ◽  
The Mean ◽  
Multiple Cysts ◽  
Cyst Growth

This study evaluated the characteristics and clinical course of patients with iris cysts in the long-term follow-up (24–48 months). We retrospectively analyzed the medical records of 39 patients with iris cysts (27 women and 12 men). Age, visual acuity, intraocular pressure (IOP), slit-lamp evaluation, and ultrasound biomicroscopy images were assessed. The mean age at diagnosis was 40.6 ± 17.48 years. Thirty (76.9%) cysts were peripheral, five (12.8%) were located at the pupillary margin, two (5.1%) were midzonal, and two (5.1%) were multichamber cysts extending from the periphery to the pupillary margin. A total of 23 (59%) cysts were in the lower temporal quadrant, 11 (28.2%) were in the lower nasal quadrant, and 5 (12.8%) were in the upper nasal quadrant. Cyst size was positively correlated with patient age (rs = 0.38, p = 0.003) and negatively correlated with visual acuity (rs = −0.42, p = 0.014). Cyst growth was not observed. The only complication was an increase in IOP in three (7.7%) patients with multiple cysts. The anatomical location of the cysts cannot differentiate them from solid tumors. The vast majority of cysts are asymptomatic, do not increase in size, and do not require treatment during long-term follow-up.

scholarly journals Corneal Cross-linking in Patients Younger than 18 Years: Long-term Follow-up in Three Israeli Medical Centers

2014 ◽  
Vol 3 (2) ◽  
pp. 84-87
Author(s):  
David Zadok ◽  
Isaac Avni ◽  
Erez Bakshi ◽  
Irina S Barequet ◽  
Isaac Aizenman ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Pediatric Population ◽  
Cross Linking ◽  
Safe Procedure ◽  
Medical Centers ◽  
Manifest Refraction ◽  
Uncorrected Visual Acuity ◽  
Long Term Follow Up

ABSTRACT Purpose To report refractive, topographic and safety outcomes of corneal cross-linking (CXL) in patients younger than 18 years of age with progressive keratoconus. Materials and methods In this retrospective study, we enrolled 31 eyes of 21 children aged 11 to 17 years that underwent corneal riboflavin-ultraviolet A induced CXL due to progressive keratoconus at three different ophthalmology departments in Israel. They were followed for 3 to 48 months (average 23 ± 13.6 months). Evaluated parameters were uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), manifest refraction, pachymetry, slit- lamp examination and corneal topography at baseline and at 1,3,6,12,24 and 48 months. Results We found a nonsignificant improvement in UCVA and BSCVA with a small reduction of manifest cylinder and no significant change in spherical equivalent or K-values. Following CXL, stability of UCVA and BSCVA at the last follow-up examination was found in 71 and 77% of treated eyes, respectively. No permanent adverse events have been recorded throughout the study period. Conclusion In our series, CXL was a safe procedure in the pediatric population. Stabilization of progressive keratoconus was achieved in visual acuity, refractive and topography parameters with no improvement in corneal indices in contrary to adult CXL treatment. How to cite this article Bakshi E, Barequet IS, Aizenman I, Levinger S, Avni I, Zadok D. Corneal Corss-linking in Patients Younger than 18 Years: Long-term Follow-up in Three Israeli Medical Centers. Int J Kerat Ect Cor Dis 2014;3(2):84-87.

Tube Shunt Related Complications of the Orbit

2013 ◽  
Author(s):  
Marc R. Criden
Keyword(s):  
Glaucoma Surgery ◽  
Shunt Surgery ◽  
Ocular Surgery ◽  
Significant Treatment ◽  
Mechanical Complications ◽  
Surface Areas ◽  
Eyelid Edema ◽  
Shunt Implantation ◽  
Orbital Complications ◽  
Tube Shunt

Orbital complications during or after glaucoma filtering or tube shunt surgery are relatively rare but may pose a significant treatment challenge or threat to vision. The incidence of complications is highly variable, and transient events may not be reported as frequently as those that persist. A variety of orbital complications occur following glaucoma surgery. Complications may be categorized as mechanical, infectious, neurogenic, or myogenic. However, each complication may be multimodal and fall into more than one category. Mechanical complications are the most frequent type of orbit complication related to glaucoma surgery and more specifically to tube shunt implantation. Mechanical complications include ptosis, lid retraction, strabismus, and proptosis. Several theories address why ptosis may occur after ocular surgery and why it may be either transient or permanent. The levator muscle may be damaged or dehisced by an eyelid speculum, leading to a lid droop. Bridle sutures, which are often used during glaucoma surgery, have also been implicated as they apply counter traction against the superior rectus muscle. Prolonged eyelid edema and local anesthesia have each been more strongly associated with postoperative ptosis. For more information on ptosis, see Chapter 25. Strabismus after tube shunt implantation is most commonly related to either the device itself or to scarring and fibrosis that develop postoperatively. Transient strabismus may be related to swelling or edema of local tissues and may also follow retrobulbar injection. The strabismus is usually incomitant and does not present with a characteristic pattern of deviation; thus, prisms and other nonsurgical treatments are seldom adequate. Although strabismus following tube shunt surgery is usually transient, persistent diplopia may occur. The type of implant, size, location, and material each play a role. Implants with larger surface areas have a higher incidence of motility disturbance due to mass effect. Tube shunt plates that require placement below the rectus muscles risk direct muscle injury or adhesion scarring to the implant. In addition, a pseudo-Brown’s syndrome may be created by a superonasal implant due to interference with the superior oblique muscle function. The bleb that develops around the tube shunt reservoir can also act as a mass.

Adult nasal glioma presenting with visual loss

2010 ◽  
Vol 124 (12) ◽  
pp. 1309-1313 ◽  
Author(s):  
A Majithia ◽  
S H Liyanage ◽  
R Hewitt ◽  
W E Grant
Keyword(s):  
Visual Acuity ◽  
Optic Nerve ◽  
Visual Loss ◽  
English Language ◽  
Incidental Finding ◽  
Relevant Literature ◽  
Nasal Glioma ◽  
Cranial Fossa ◽  
Skull Base Defect

AbstractObjectives:We report a rare case of a nasal glioma found incidentally in an adult, presenting with visual loss, optic nerve oedema and proptosis.Case report:A 41-year-old woman presented with bilateral proptosis, impairment in visual acuity (6/60 bilaterally) and loss of colour vision. Computed tomography and magnetic resonance imaging showed proptosis, bilateral optic nerve swelling and a heterogeneous mass occupying the left nasal cavity and extending through a skull base defect into the anterior cranial fossa. Biopsy confirmed a nasal glioma. Treatment with intravenous dexamethasone resolved the proptosis, and the patient's visual acuity recovered to 6/9 bilaterally. At the multidisciplinary team meeting, it was felt that the nasal glioma probably represented an incidental finding and was not directly responsible for the patient's proptosis and transient visual loss.Conclusion:To our knowledge, this is the first report in the English language literature of adult nasal glioma presenting with visual loss. The management of nasal gliomas in adults is contentious and the relevant literature is reviewed. This case was managed conservatively with regular follow up.

Intravitreal slow-releasing dexamethasone implant for idiopathic neuroretinitis

2020 ◽  
pp. 112067212095307
Author(s):  
Osman Çekiç ◽  
Samet Gülkaş
Keyword(s):  
Visual Acuity ◽  
Macular Edema ◽  
Optic Disc ◽  
Vision Loss ◽  
Dexamethasone Implant ◽  
Optic Disc Edema ◽  
Intravitreal Dexamethasone Implant ◽  
Optic Disc Swelling ◽  
Intravitreal Dexamethasone

Introduction: The purpose of this report is to describe a successful management of idiopathic neuroretinitis with intravitreal dexamethasone implant. Method: Interventional case report. Clinical Case: A 34-year-old man with an acute painless unilateral vision loss, optic disc swelling, and a macular edema was diagnosed as idiopathic neuroretinitis, and he underwent 0.7 mg dexamethasone intravitreous implant injection. Macular edema responded quickly and visual acuity improved from 20/50 to 20/25 within 2 weeks and to 20/20 within a month. One month after the injection, optic disc edema disappeared. No recurrence occurred and visual acuity was stable at 20/20 during 3 years of follow-up. Conclusion: Idiopathic neuroretinitis can be treated with intravitreal dexamethasone implant.

Shunt surgery for hydrocephalus in tuberculous meningitis: a long-term follow-up study

1991 ◽  
Vol 74 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Ravi Palur ◽  
Vedantam Rajshekhar ◽  
Mathew J. Chandy ◽  
Thomas Joseph ◽  
Jacob Abraham
Keyword(s):  
Tuberculous Meningitis ◽  
External Ventricular Drainage ◽  
Shunt Surgery ◽  
Ventricular Drainage ◽  
Initial Examination ◽  
Long Term Outcome ◽  
Long Term Follow Up ◽  
Grade Iii

✓ Hydrocephalus is a common complication of tuberculous meningitis. Case studies of 114 patients with tuberculous meningitis and hydrocephalus, who underwent shunt surgery between July, 1975, and June, 1986, were reviewed to evaluate the long-term outcome and to outline a management protocol for these patients based on the results. Seven factors were studied in each case: 1) age at admission; 2) grade on admission (I to IV, classified by the authors: Grade I being the best and Grade IV being the worst); 3) duration of alteration of sensorium; 4) cerebrospinal fluid (CSF) cell content at initial examination; 5) CSF protein levels at initial examination; 6) number of shunt revisions required; and 7) the necessity for bilateral shunts. During a long-term follow-up period ranging from 6 months to 13 years (mean 45.6 months), the mortality rate was 20% for patients in Grade I; 34.7% for patients in Grade II; 51.9% for patients in Grade III; and 100% for patients in Grade IV. Only the grade at the time of admission was found to be statistically significant in determining final outcome (p < 0.001). Based on these results, the authors advocate early shunt surgery for Grade I and II patients. For patients in Grade III, surgery may be performed either if external ventricular drainage causes an improvement in sensorium or without selection. All patients in Grade IV should undergo external ventricular drainage and only those who show a significant change in their neurological status within 24 to 48 hours of drainage, should have shunt surgery.

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