Author: Healio ophthalmology

Publication Exclusive: Dry eye needs to be evaluated, managed before ocular surgery

Dry eye is a multifactorial disease of the tear film and ocular surface resulting in symptoms of discomfort, visual disturbance and tear film instability with potential ocular surface damage. It is accompanied by increased tear film osmolarity and ocular surface inflammation. This definition, given by the Dry Eye WorkShop in 2007, forms the basis of our understanding of dry eye. It also gives guidelines regarding grading of dry eye and treatment strategies for each grade of severity.When it comes to ocular surgeries, managing dry eye in the perioperative period plays (Read more...)

Researchers identify genetic associations that influence primary open angle glaucoma

Investigators have identified three genetic associations – TXNRD2, ATXN2 and FOXC1 – that may influence susceptibility of primary open angle glaucoma, according to a press release from Massachusetts Eye and Ear/Harvard Medical School and Case Western Reserve University School of Medicine.The findings, published in Nature Genetics, are intended to be used to develop gene-based testing and treatment strategies for glaucoma.

Is OCT angiography going to change our lives?

OCT jumped into our lives in 1991 when Huang and colleagues published about a “noninvasive cross-sectional imaging technology in biological systems.” Since then, major advancements have been made. Spectral-domain and swept-source OCT platforms brought faster scans and higher resolution. Also, OCT technology has been proposed in conjunction with adaptive optics, which may allow further resolution, up to a single photoreceptor cell. Polarized light combined with high-resolution OCT scanning may improve characterization of the retinal pigment epithelium. No doubt, therefore, that with the introduction of OCT, assessment of fundus structure has (Read more...)

OCT angiography provides noninvasive close-up viewing of retinal vasculature

Over the past 20 years, OCT has developed rapidly as a noninvasive method of retinal imaging. OCT angiography, or OCTA, is the latest evolution of this technology, allowing extreme close-up imaging of the retinal vasculature for assessing retinal vascular diseases, and holds potential for guiding treatment decisions and monitoring patient responses to therapy.“The huge progress consists in having both functional and morphological assessment from a single dye-less examination. The rapid and noninvasive nature of the OCTA allows an easier follow-up of morphological and functional changes in prolonged, repetitive and even (Read more...)

Transscleral fixation technique may reduce intraoperative IOL placement time

A transscleral fixation technique using a foldable posterior chamber IOL and 25-gauge pars plana vitrectomy may improve anatomic and visual outcomes while minimizing the risk of complications and reducing surgical times, according to a study.“The technique achieves the implantation of a posterior chamber IOL through a small incision in the absence of capsular support, which is applicable to a wide range of patients, whether aphakic, pseudophakic with IOL subluxation or dislocation, and/or dislocated cataract or cataract fragments,” study author Daniel A. Adelberg, MD, told Ocular Surgery News.

Study finds increased blink rate correlates with decreased corneal sensitivity

Classifying tear dysfunction groups is important because there are meaningful differences in corneal sensitivity and blink rate among several subcategories, according to a study.“We wanted to compare the standard method for checking corneal sensitivity, which is with a nylon thread (contact method), to a noncontact method (air jet esthesiometer),” co-author Stephen C. Pflugfelder, MD, a professor and director of the Ocular Surface Center in the Department of Ophthalmology at Baylor College of Medicine in Houston, said.