purpose: to evaluate the outcomes of cataract extraction by phacoemulsification and posterior chamber intraocular lens (pciol) implantation in patients with chronic angle closure glaucoma (cacg). methods: consecutive cacg patients with co-existing visually significant cataracts were included in this noncomparative interventional case series. after obtaining informed consent, clear cornea phaco-...

Purpose The aim of this study was twofold: first, to evaluate the predisposing factors for occurrence of malignant glaucoma and second, to compare frequency of malignant glaucoma depending on the type of primary glaucoma surgery. Methods Retrospective analysis was performed in 1689 consecutive patients who underwent glaucoma surgery alone or combined with phacoemulsification. Data collected i...

In recent papers (Lowe, I968, I969a) it was shown that in normal eyes, lens position and thickness were coordinated with axial length and radius of corneal curvature, whereas in eyes with primary angle-closure glaucoma these correlations were lacking. Throughout adult life, lenses increase in thickness at the same rate in normal eyes and those with angle-closure glaucoma, but no change could be...

Primary angle closure glaucoma is one of the leading causes of blindness in Asia. Surgical intervention is often needed to control the intraocular pressure for patients with advanced glaucoma. The current surgical modalities include laser peripheral iridoplasty, lens extraction, trabeculectomy, goniosynechialysis, combined procedures, glaucoma implants, and cyclodestruction. The choice of surgi...

AIM To describe the surgical management of glaucoma in a patient with severe scleromalacia, and secondary angle closure. INTRODUCTION The management of glaucoma with coexisting scleromalacia plus secondary angle closure is challenging as most commonly performed incisional glaucoma surgery as well as minimally invasive glaucoma surgery (MIGS), which targets the drainage angle are all contraind...

The error in irradiance measured with Sun-calibrated multichannel radiometers may be large when the solar zenith angle (SZA) increases. This could be particularly detrimental in radiometers installed at mid and high latitudes, where SZAs at noon are larger than 50 degrees during part of the year. When a multiregressive methodology, including the total ozone column and SZA, was applied in the ca...

The γ−ray burst GB970508 was observed simultaneously by the Gamma Ray Burst Monitor (GRBM) and one of the X−ray Wide Field Cameras (WFC) aboard BeppoSAX. The latter provided a position within 1.9 radius. A series of follow-up observations with the Narrow Field Intruments (NFI) was then performed in a period from ∼ 6 hours to 6 days after the main event. A previously unknown source, which we ass...

Small angle neutron scattering (SANS) instruments typically cover a q (scattering vector) range from 0.001 to 0.6 A(-1). This range in q is achieved through a combination of cold neutrons (lambda>4 A) and a highly collimated beam. However, as a direct result of the unavailability of a cold source at the Canadian Neutron Beam Centre (CNBC), we have resorted to adapting a triple-axis spectrometer...

Chronic angle-closure glaucoma is a major cause of blindness, particularly in Asia. The goals of management are to prevent both progression of anatomic angle-closure and progression of glaucomatous optic neuropathy, the latter by controlling intraocular pressure. Laser iridotomy to eliminate pupillary block is the definitive initial treatment and laser peripheral iridoplasty is the second-line ...

Grazing-incidence small-angle X-ray scattering (GISAXS) is often used as a versatile tool for the contactless and destruction-free investigation of nano-structured surfaces. However, due to the shallow incidence angles, the footprint of the X-ray beam is significantly elongated, limiting GISAXS to samples with typical target lengths of several millimetres. For many potential applications, the p...