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Tip: Not every peripapillary hemorrhage is a sign for glaucoma
The Science behind the Tip Most of the time, disc hemorrhages in patients with glaucoma are...
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The Factors Affecting the Stability of IOP Homeostasis
Purpose: Shear-induced nitric oxide (NO) production by Schlemm's canal (SC) endothelial cells...
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Short-term Detection of Fast Progressors in Glaucoma: The Fast Progression Assessment through Clustered Evaluation (Fast-PACE) Study
Purpose: To evaluate the performance of an intensive, clustered testing approach in identifying...
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The relationship between multiple deprivation and severity of glaucoma at diagnosis
BACKGROUND: Socioeconomic deprivation is associated with higher odds of chronic diseases, with...
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Plasma metabolite profile for primary open-angle glaucoma in three US cohorts and the UK Biobank
Author(s): Oana A Zeleznik ° (1,2), Jae H Kang ° (3,4), Jessica Lasky-Su (3,4), A Heather...
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Be aware of the potential influence of the vitreoretinal interface when interpreting OCT images of the retinal nerve fiber layer (RNFL) in glaucoma patients
Vitreous traction can cause artifacts that may obscure RNFL thinning, potentially leading to...
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Placebo effect and its determinants in ocular hypotensive therapy: meta-analysis and multiple meta-regression analysis
Author(s): Sooyeon Choe (1), Young Kook Kim (2), Woosuk Chung (3), Donghyun Ko (3), Marvin Lee...
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Angle Closure SIG
SIG Corner Editor: Hana Abouzeid Chair: John Thygesen Co-chair: Gus Gazzard The goal of this SIG...
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Comparison of Trabeculectomy Outcomes Performed by Residents in Training and Ophthalmologists
Author(s): Mário Lima-Fontes (1), Ana Faria-Pereira (1), Mariana Leuzinger-Dias (1), Marta Inês...
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Oral acetazolamide (Diamox) is known to lower intraocular pressure, but it can very rarely cause acute bilateral angle closure with severely elevated intraocular pressure
The mechanism is thought to be an idiosyncratic reaction to sulphonamides, similar to that which...
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Cataract Surgery in Patients with Functioning Glaucoma Filtration Surgery
The accelerated development of cataract is frequently seen in the years following glaucoma...
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In patients with pseudoexfoliation glaucoma, phacoemulsification with IOL implantation can result in a late, sustained reduction in intraocular pressure
The Science behind the Tip Raised intraocular pressure (IOP) in an eye with pseudoexfoliation syndrome results from pigment and exfoliation...
October 31, 2012
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Topical carbonic anhydrase inhibitors can cause damage in corneas with severe endothelial dysfunction
The Science behind the Tip The enzyme carbonic anhydrase is present in the corneal endothelium where it is involved in fluid transport (1). It thus...
September 30, 2012
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In patients with progressive normal tension glaucoma, the use of topical brimonidine may help to preserve visual function
The Science behind the Tip A recent study has shown that visual function is more likely to be preserved with brimonidine 2% than with timolol 0.5%...
June 30, 2012
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A dry eye can hamper visual field test interpretation
The Science behind the Tip During visual field (VF) testing the cornea of patients with severe dry eye condition can get dry to such an extent as...
May 31, 2012
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Laser peripheral iridotomy can reduce the intraocular pressure in pigment dispersion syndrome, but may not prevent glaucoma
The Science behind the Tip Nd-YAG laser peripheral iridotomy (PI) eliminates the reverse pressure gradient and intermittent posterior bowing of the...
April 30, 2012
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Gonioscopy should be performed using the minimal possible levels of illumination in order to reliably detect appositional angle closure
The Science behind the Tip Anterior chamber angle width varies dramatically with illumination (figure and video in ref. 1) (1,2). Visible...
March 31, 2012
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Laser peripheral iridotomy does not usually result in long-term intraocular pressure control in patients with chronic angle-closure glaucoma
The Science behind the Tip The initial treatment of chronic angle-closure glaucoma is to undertake a laser peripheral iridotomy (PI) to prevent...
February 29, 2012
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Trial lens artifacts can be easily distinguished from glaucomatous field defects
The Science behind the Tip False depressions due to a misaligned trial lens or a lens holder which was placed too far from the patient's eye are...
January 31, 2012
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In neovascular glaucoma, the immediate injection of intravitreal bevacizumab (Avastin®) usually results in rapid regression of iris new vessels and pain relief
The Science behind the Tip Neovascular glaucoma is a devastating consequence of diseases like proliferative diabetic retinopathy and ischaemic...
December 31, 2011
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Washout periods vary significantly between glaucoma medications
The Science behind the Tip Knowledge of the washout periods for topical medications is crucial for the evaluation of the effects of their...
November 30, 2011
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To prevent early hypotony with a non-valved aqeous shunt, always occlude the tube with a suture
The Science behind the Tip The safe use of non-valved aqueous shunt implants, such as the Baerveldt (Advanced Medical Optics, Inc., Irvine,...
October 31, 2011
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Prostaglandin analogues should be avoided in patients with a history of herpes keratitis
The Science behind the Tip Topical prostaglandins are commonly used as first-line and second-line therapy in patients with ocular hypertension and...
September 30, 2011
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Rim/disc ratio is a more sensitive parameter than cup/disc ratio
The Science behind the Tip Routine fundus observation of the optic disc is helpful in the diagnosis of early glaucoma and it is often key in the...
June 30, 2011
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In patients with juvenile-onset chronic open-angle glaucoma, trabeculectomy with mitomycin C is usually required to prevent progressive visual loss
The Science behind the Tip Juvenile-onset chronic open-angle glaucoma is inherited in an autosomal dominant fashion with high penetrance....
May 31, 2011
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The advantage of adding a 3rd or 4th drug may be negligible
The Science behind the Tip With the arrival of combination products, our threshold for prescribing multiple glaucoma medications has significantly...
April 30, 2011
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The most effective treatment of glaucoma associated with epithelial downgrowth is to insert a drainage implant
The Science behind the Tip Epithelial downgrowth into the anterior chamber is an extremely rare cause of glaucoma after anterior segment incisional...
March 31, 2011
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Chronic miotics can be helpful in case of plateau iris configuration
The Science behind the Tip Long term miotics are seldom prescribed nowadays. Still the drugs remain useful in case of plateau iris configuration, a...
February 28, 2011
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To reduce the risk of late bleb-related infection, avoid multiple-dose eye drops in patients who have previously undergone trabeculectomy with mitomycin C
The Science behind the Tip Bleb-related infection is a devastating and potentially blinding late consequence of trabeculectomy, particularly if...
January 31, 2011
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Small field depressions can be more worrying than large ones
The Science behind the Tip Much of the decision making in modern glaucoma practice is based on automated visual field test results. Careful...
December 31, 2010
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The cataract surgeon should be informed that the patient has pseudo-exfoliation syndrome
The Science behind the Tip Although the diagnosis of pseudo-exfoliation syndrome (PEX) with a fully dilated pupil in an elderly patient should pose...
October 31, 2010
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If conservative measures are unsuccessful in the management of malignant glaucoma, phaco with IOL combined with posterior capsulotomy and anterior vitrectomy usually is
The Science behind the Tip Malignant glaucoma in a phakic eye typically follows incisional surgery for primary angle-closure glaucoma. Shallowing...
September 30, 2010
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In patients with chronic angle-closure glaucoma and cataract, phacoemulsification with IOL implantation usually results in IOP control up to 2 years after surgery
The Science behind the Tip An anteriorly positioned and thickened lens plays an important role in the pathogenesis of anterior chamber shallowing...
June 30, 2010
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Measurement of central corneal thickness is essential to ensure optimal management of glaucoma patients
The Science behind the Tip The measurement of central corneal thickness (CCT) has emerged as an important parameter to determine in all patients...
May 31, 2010
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Disc Haemorrhages
The Science behind the Tip Although described most commonly in normal tension glaucoma, optic disc haemorrhages may occur in all forms of glaucoma....
April 30, 2010
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When should neuroradiological imaging be undertaken in patients with normal tension glaucoma?
The Science behind the Tip Clinicians must remain vigilant to detect intracranial pathology in patients with normal tension glaucoma. Most patients...
March 31, 2010