HOME >> MEDICINE >> NEWS
People with large pupils can now get LASIK and avoid night vision disturbances

SAN FRANCISCO People who previously were not considered good candidates for LASIK because of large pupils can now get the procedure, according to a study appearing in the July issue of Ophthalmology, the clinical journal of the American Academy of Ophthalmology, the Eye M.D. Association. By using a larger laser treatment zone on the underlying layers of the cornea, surgeons can avoid inducing night vision disturbances such as haloes and glare that patients with large pupils often experience.

In this study, the first to evaluate laser treatment zones larger than 6.5 millimeters, 352 eyes of 186 patients underwent LASIK for correction of nearsightedness and nearsightedness with astigmatism. The treatment zones varied from six to eight millimeters, depending on the size of the patient's pupil, degree of astigmatism and amount of needed correction.

Among patients with nearsightedness, nearly 56 percent achieved uncorrected visual acuity of 20/20 or better; among those with nearsightedness with astigmatism, nearly 62 percent achieved 20/20 or better. In addition, preoperative best-corrected visual acuity and best spectacle-corrected contrast sensitivity were maintained.

Brian S. Boxer Wachler, MD, co-author of the study and a faculty member at the UCLA Medical Center, Jules Stein Eye Institute, said, "We know that corneal aberrations and night vision disturbances after LASIK are directly proportional to the degree of nearsightedness corrected and the size of the clearance zone that is, the difference between pupil size and the optical zone treated by the laser. With this study, we now know use of large optical zones is safe and effective in preventing nighttime glare and haloes in patients with large pupils."

"This study shows using ablation zones from six to eight millimeters did not pose a problem in terms of safety. If anything, the larger optical zones had a higher percentage of eyes achieving 20/20 and 20/40 uncorrected visual acuity than th
'"/>

Contact: Media Relations
pgreene@aao.org
415-561-8534
American Academy of Ophthalmology
24-Jul-2003


Page: 1 2

Related medicine news :

1. People wounded in tsunami at risk of undetected fungal infections
2. People on food stamps cant afford heart-healthy meals
3. People are of two minds on moral judgments
4. People with low incomes more likely to develop brain tumors
5. People are averse to taking drugs
6. People with chronic eye diseases not getting recommended eye exams
7. People only slightly more likely to die after episodes of stagnant air
8. People with food allergies should not only be careful about what they eat
9. People who give, live longer: U-M study shows
10. People near freeways are exposed to 30 times the concentration of dangerous particles
11. People who dont dip have higher levels of clot factor and risk

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/8/2016)... ... February 08, 2016 , ... ... area, has selected the latest beneficiary of their ongoing community enrichment program. The ... bullying in area schools. Donations are now being accepted at: http://www.angelsanddoves.com/donate.html . ...
(Date:2/8/2016)... , ... February 08, 2016 ... ... security executive networking and relationship-marketing firm, announced today that nominations will be ... Security Executive® (ISE®) West Awards. , Awards include the Information Security ...
(Date:2/8/2016)... ... February 08, 2016 , ... FileHold's document ... organizations. DocuSyst provides a cloud hosted environment for FileHold software that is pay ... various 3rd party applications using the FileHold web services API. DocuSyst also advises ...
(Date:2/8/2016)... ... February 08, 2016 , ... The Association of ... AHCC and the Home Health and Hospice ICD-10 Transition Workgroup are working closely ... coding guidance and clarifications, to address concerns over the use of 'A' as ...
(Date:2/8/2016)... ... February 08, 2016 , ... Guruji Mahendra Kumar Trivedi is offering ... 2016 in honor of his birthday on February 10th. During this time, people ... is known by over 250,000 people from over 40 different countries as an “ordinary ...
Breaking Medicine News(10 mins):
(Date:2/8/2016)... , Feb. 8, 2016   GS1 US ... to guide them through GS1 Standards implementation to address ... (FDA) Unique Device Identification (UDI) rule. ... Beth Gibson , senior director industry development, medical ... development director, GS1 US --> ...
(Date:2/8/2016)... LEAWOOD, Kan. , Feb. 8, 2016 ... held organization that formerly specialized in the ... facilities, recently announced that it has divided ... Nueterra Capital. While Nueterra Capital will continue ... advisory services, NueHealth will operate a national ...
(Date:2/8/2016)... 2016   HighPoint Solutions today announced ... pharmacovigilance technology services division.  NRG is a leading ... Oracle Argus Specialized partner, providing drug safety system ... --> --> ... capabilities and provides a global scale and infrastructure ...
Breaking Medicine Technology:
Cached News: