Astigmatism News and Research

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Astigmatism is a type of refractive inaccuracy in which the shape of the normally curved surface of the cornea is curved to different degrees in different areas. As a result of this abnormality, the light rays that enter the eye fails to converge at a focal point and instead comes to a focus at different focal points with a distance between them.

Scleral imbrication shows promise in second surgery for refractory MHRD

Combining vitrectomy and gas tamponade with sclera imbrication results in high retinal reattachment and macular hole closure rates among patients with refractory macular hole retinal detachment associated with high myopia, study findings indicate.

13 Feb 2015

New approach to measuring, correcting visual abnormalities

A technique developed by astronomers seeking a clear view of distant objects in space is being intensively studied as a new approach to measuring and correcting visual abnormalities.

25 Sep 2014

Avedro receives Canadian approval for KXL II System

Avedro Inc., a Boston-based ophthalmic medical device and pharmaceutical company announces today the Canadian approval for the company's KXL II System. The KXL II System performs a procedure called PiXL (Photorefractive Intrastromal Cross-Linking) which has the potential to deliver non-surgical correction of myopia, and improve cataract surgery outcomes.

23 Apr 2014

High-precision Lens Profiler from Phasefocus assists practitioners studying clinical complications arising from corneal oxygen deficiency

Phase Focus Ltd (Phasefocus), the company that is revolutionising microscopy and imaging with the Phasefocus Virtual Lens®, reports on how optical lens practitioners are using the Phasefocus high-precision Lens Profiler to study potential clinical complications arising from corneal oxygen deficiency.

From Phase Focus Limited 18 Mar 2014

Avedro initiates US clinical trials for Lasik with cross-linking and pulsed accelerated cross-linking

Avedro Inc., a Boston-based ophthalmic medical device and pharmaceutical company, announces today that the first patients have been treated in two new US clinical trials: Lasik with Cross-linking and Pulsed Accelerated Cross-linking.

12 Nov 2013

Wavefront optics-from the observatory to your optometrist's office

Techniques developed by astronomers seeking a clear view of objects in space are coming closer to home, as eye care professionals apply the concept of wavefront optics to understanding-and correcting-subtle visual abnormalities of the human eye, according to a special article in the September issue of Optometry and Vision Science, official journal of the American Academy of Optometry.

27 Aug 2013

Massachusetts hospital performs first cornea transplant with pre-loaded donor tissue

The first successful cornea transplant with donor endothelial tissue preloaded by an eye bank has been performed at Massachusetts Eye and Ear in Boston, Mass. Roberto Pineda II, M.D., Director of the Refractive Surgery Service at Mass. Eye and Ear, and an Associate Professor of Ophthalmology at Harvard Medical School, recently performed the groundbreaking transplant.

8 May 2013

Clearview announces arrival of Catalys Precision Laser System in Southern CA

Clearview Eye & Laser Medical Center announces the arrival of the world's most sophisticated laser cataract surgery system in Southern CA.

24 Feb 2013

Government investment in eye examinations may boost the economy

Governments could add thousands of millions of dollars to the global economy simply by investing in eye examinations and the provision of glasses for some 703 million people who need them, according to a study published this month in the Bulletin of the World Health Organization.

6 Oct 2012

AIO first in the Pittsburgh area to offer laser surgery for cataract removal

Associates in Ophthalmology (AIO), an eye care and surgery practice with seven locations in the Tri-State Area, has become the region's first medical group to offer bladeless, computer-controlled laser surgery for cataract removal.

23 Jun 2012

CooperVision to launch Proclear 1 day multifocal lenses

More than one billion people worldwide have a vision condition called presbyopia(1), which is a natural decrease in the ability of the lens in the eye to change its shape to focus on close objects. We've all seen others struggle with trying to read menus and newspapers. Maybe it has even happened to you.

15 May 2012

Computational adaptive optics for real-time in-vivo applications

Real-time, 3-D microscopic tissue imaging could be a revolution for medical fields such as cancer diagnosis, minimally invasive surgery and ophthalmology. University of Illinois researchers have developed a technique to computationally correct for aberrations in optical tomography, bringing the future of medical imaging into focus.

24 Apr 2012

FDA clears CooperVision's Avaira Toric contact lenses for astigmatism

CooperVision, Inc. today announced that the U.S. Food and Drug Administration has granted a Special 510(k) clearance for CooperVision's Avaira Toric two-week silicone hydrogel contact lenses for astigmatism.

6 Apr 2012

Japan approves Visian Toric Implantable Collamer Lens

STAAR Surgical Company, the leading developer, manufacturer and marketer of minimally invasive refractive lenses, today announced that its Visian Toric Implantable Collamer Lens has been approved by the Japanese Ministry of Health, Labor and Welfare.

29 Nov 2011

STAAR Surgical's nanoFLEX Toric Collamer Single Piece IOL receives CE Mark approval

STAAR Surgical Company, a leading developer, manufacturer and marketer of minimally invasive ophthalmic products, today announced it has received CE Mark approval for its nanoFLEX Toric Collamer Single Piece IOL.

16 Nov 2011

Collagen crosslinking for keratoconus may receive FDA approval in 2012

Patients in the United States who have the cornea-damaging disease keratoconus may soon be able to benefit from a new treatment that is already proving effective in Europe and other parts of the world.

24 Oct 2011

CooperVision's voluntary recall of Avaira Toric contact lenses continues

In full cooperation with the United States Food and Drug Administration, CooperVision, Inc. is continuing to work with the FDA, distributors, customers, eye care practitioners and lens wearers to complete the worldwide recall initiated on August 19, 2011 on certain lots of Avaira Toric contact lenses.

14 Oct 2011

Loma Linda University's Vision Intervention Program receives Spot screener from PediaVision

PediaVision today announced that Loma Linda University's Vision Intervention Program is the first in the State of California to receive the revolutionary new vision screener from PediaVision called "Spot."

30 Sep 2011

Statistical algorithm can now determine focus error in eyes, cameras

University of Texas at Austin researchers have discovered how to extract and use information in an individual image to determine how far objects are from the focus distance, a feat only accomplished by human and animal visual systems until now.

27 Sep 2011

STAAR's new Visian ICL with CentraFLOW technology showcased at ESCRS congress

STAAR Surgical Company, a leading developer, manufacturer and marketer of minimally invasive ophthalmic products, today announced the Visian Implantable Collamer Lens (ICL), and new Visian ICL with CentraFLOW technology utilizing the KS-AquaPORT, were featured prominently in twice as many presentations at the 2011 Congress of European Society of Cataract and Refractive Surgeons (ESCRS) as those on the ICL during last year's Congress.

23 Sep 2011