Search This Blog

Thursday, May 04, 2017

NEUROSTIMULATOR FOR DRY EYE

According the the American Academy of Ophthalmology:

The FDA approved TrueTear, an intranasal tear neurostimulator device designed to temporarily increase tear production in adult patients.

The handheld stimulator comes with daily disposable tips that are inserted into the nasal cavity for an effective, non–invasive and drug–free way to induce the production of tears.

Heart Pill for CSR

Researchers are leading a groundbreaking study into whether or not a drug used to treat heart failure, eplerenone, could save the sight of patients with recalcitrant central serous chorioretinopathy. 

Thursday, December 01, 2016

VITAMIN D AND DRY EYE

According to this study in Acta Ophthalmologica:

Vitamin D status may be an important factor for dry eye syndrome.

Wednesday, November 30, 2016

TOO MUCH LUTEIN?

This article from the University of Utah discusses how excess lutein supplementation in addition to dietary intake of lutein from greens can lead to crystalline deposits in the macula.  Authors recommend only qualified patients with risk for macular degeneration consider lutein supplementation.


Thursday, November 10, 2016

OCT AND MULTIPLE SCLEROSIS

This article in Review of Optometry discusses a link between multiple sclerosis and ganglion cell thinning.

Wednesday, October 26, 2016

CORNEAL CROSS-LINKING SAFE AND EFFECTIVE IN TEENS WITH KERATOCONUS

 This study reported in the Journal of Cornea and External Disease reports that corneal cross-linking is safe and effective at halting the progression of keratoconus in teen patients.

Monday, October 24, 2016

SWIM GOGGLES INCREASE INTRAOCULAR PRESSURE

According to this study in the Journal of Glaucoma swim goggles acutely increase intraocular pressure in the eyeball and may have implications for patients with glaucoma.

Tuesday, October 04, 2016

LINKS BETWEEN DIABETES, TREATMENT, AND GLAUCOMA

From Acta Ophthalmologica: 

To determine the effect of anti-diabetic medication on glaucoma. 

Patients treated with anti-diabetic drugs at any time during the study period had a significantly higher overall relative risk of glaucoma. For patients treated with anti-diabetic drugs, we found an increased hazard for development of glaucoma in patients with diabetic retinopathies and joint complications with diabetic retinopathies. Furthermore, we found that concomitant antihypertensive medications were associated with an increased likelihood of glaucoma overall, while treatment with β-blocker and RAS, in combination, are associated with a significantly lower risk.  Use of anti-diabetic drugs is strongly associated with use of anti-glaucomatous drugs. Diabetic complication as well as concomitant antihypertensive medications affect the risk of glaucoma in patients treated with anti-diabetic drugs.

Wednesday, September 28, 2016

TINTED OR COLORED LENSES APPEAR TO NOT AMELIORATE READING DIFFICULTIES

From Opthalmic and Physiological Optics reports:


There are many anecdotal claims and research reports that coloured lenses and overlays improve reading performance. Here we present the results of a systematic review of this literature and examine the quality of the evidence. 
While many studies report improvements with coloured lenses, the effect size is generally small and/or similar to the improvement found with a placebo condition.
Consistent with previous reviews and advice from several professional bodies, we conclude that the use of coloured lenses or overlays to ameliorate reading difficulties cannot be endorsed and that any benefits reported by individuals in clinical settings are likely to be the result of placebo, practice or Hawthorne effects.

Thursday, September 22, 2016

ROBOTIC EYE SURGERY

According to this University of Oxford News report

University of Oxford surgeons at Oxford's John Radcliffe Hospital have performed the world's first operation inside the eye using a robot.

The device is designed to eliminate unwanted tremors in the surgeon’s hand – such as through their pulse – so tiny surgical manipulations can be safely carried out within the eye.
The robot acts like a mechanical hand with seven independent computer-controlled motors resulting in movements as precise as 1000th of a millimetre in scale.

Thursday, March 17, 2016

SCLERAL CONTACT LENSES AND CORNEA HYPOXIA

According to this study in Optometry and Vision Science:

The purpose of this study is to examine the change in corneal thickness and posterior curvature following 8 hours of miniscleral contact lens wear. Although a small amount of corneal swelling was induced following 8 hours of miniscleral lens wear, modern high Dk miniscleral contact lenses that vault the cornea do not induce clinically significant corneal edema or hypoxic–related posterior corneal curvature changes during short–term wear. Longer–term studies of compromised eyes are still required to inform the optimum lens and fitting characteristics for safe scleral lens wear to minimize corneal hypoxia.