Navigation Links
UH optometrists make custom contact lenses for long-underserved patients
Date:5/13/2009

atism, an aberration commonly corrected with contacts, the graded steps that you can put in the lens are finite, meaning that you cannot put whatever you want in the lens," Marsack said.

For the most part, he said, those steps are there because people do well with them, and they don't sacrifice quality of life.

"But, we don't want those restrictions. We want to put whatever astigmatism we want at whatever orientation."

Applegate explained that although rigid contact lenses, or gas-permeable ones, are used to correct higher-order aberrations in highly aberrated eyes by masking a significant portion of the aberrations, soft lenses are preferred by patients about 3-to-1, because of comfort and wear time.

"The major problem with the rigid gas-permeable lens is the patient often has to pick the portion of the day that they're going to have reasonable vision," Applegate said.

The key to creating a custom soft lens, he said, is making the surface that corrects the optical errors of the eye and having it remain properly aligned during wear.

"You can imagine that you have a surface with bumps and hills on it, and they're on the order of microns. If there are bumps and hills, light will go every which way. Instead of a clean focus, it's a very blurry focus," Applegate said. "The correcting bumps and hills of the contact lens have to register perfectly with the bumps and hills on the eye.

"First, we have to manufacture this lens. The success of this lens depends on registering it on the eye. It can only translate left and right on the order of one-tenth of a millimeter, and it can't rotate more than a couple of degrees."

A large part of Marsack's latest grant is dedicated to solving lens-stabilization problems.

"It's important to know how it's going to rotate, so that, when you put the correction on it, you'll know how it'll perform," Marsack said. "It needs to move so that it's physiologi
'/>"/>

Contact: Angela Hopp
ahopp@uh.edu
713-743-8153
University of Houston
Source:Eurekalert  

Page: 1 2 3 4

Related medicine news :

1. Seattle and Tacoma-Area Optometrists Partner With Sen. Murray in Improving Infant Eye and Vision Care
2. West Virginia Optometrists Partner With Sens. Byrd and Rockefeller, U.S. House Leaders in Improving Infant Eye and Vision Care
3. Sen. Durbin and U.S. House Leaders Support Chicago-Area Optometrists in Improving Infant Eye and Vision Care Through the InfantSEE(R) Program
4. Des Moines-Area Optometrists Partner With Sens. Harkin and Grassley; U.S. House Leaders in Improving Infant Eye and Vision Care
5. ND Optometrists Partner With U.S. Sens. Conrad and Dorgan, Rep. Pomeroy and Gov. Hoeven in Improving Infant Eye and Vision Care
6. Madison-Area Optometrists Partner With Senator Kohl in Improving Infant Eye and Vision Care
7. Dr. Dan L. Fortenbacher, O.D., FCOVD, Becomes 29th President of College of Optometrists in Vision Development (COVD); Unveils 7-Part Development Plan for Ongoing Growth
8. Enwisen™ Creates Emergency Notification Center for Customer Twentieth Century Fox – Response to Possibility of Swine Flu Epidemic
9. Record Number of drugstore.com Customers Search for Bargains
10. CriticalPoint(TM) Training Rated Excellent in Customer Satisfaction
11. Blue Cross Blue Shield of Michigan Plans to Offer Customer Groups Ability to Purchase Coverage of Autism Treatment Programs that Provide Intensive Early Intervention
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UH optometrists make custom contact lenses for long-underserved patients
(Date:6/30/2015)... ... June 30, 2015 , ... Bill Howe Plumbing, ... in San Diego. Bill Howe offers all employees ample opportunity for education and ... most notably through the local Plumbing-Heating-Cooling-Contractors of San Diego (PHCC-SD). The San Diego ...
(Date:6/30/2015)... ... , ... Some may define success as the sum of small efforts repeated ... Athletic Trainers’ Association (NYSATA) and its members continue to be acknowledged and applauded by ... number of members also received honors at the national level. , For ...
(Date:6/30/2015)... ... June 30, 2015 , ... The American Psychiatric ... at Disney’s Coronado Springs Resort in Lake Buena Vista, Florida, and will offer ... premiere event for psychiatric-mental health nursing draws more than 1,500 health care professionals ...
(Date:6/30/2015)... ... June 30, 2015 , ... Medflow, the leader in the ... health records system from the company exclusively dedicated to helping eye care professionals ... intuitive state-of-the-art solution combining modern cloud technology with Medflow’s proven expertise in the ...
(Date:6/30/2015)... ... ... Purdy, the spokesperson for Dephinitive Systems LLC, announces today that the company will officially ... eXtra Operability (XO) which was chosen to reflect the company’s commitment to health care ... XO, based in Cleveland OH, is part of the Cadrillion Capital family of Healthcare ...
Breaking Medicine News(10 mins):Health News:Two Local San Diego Plumbers from Bill Howe Plumbing, Inc. Graduate from PHCC Academy 2Health News:Two Local San Diego Plumbers from Bill Howe Plumbing, Inc. Graduate from PHCC Academy 3Health News:NYSATA and Members Recognized with National Awards 2Health News:NYSATA and Members Recognized with National Awards 3Health News:American Psychiatric Nurses Association 29th Annual Conference: Continuing Education and Collaboration in Psychiatric-Mental Health and Nursing 2Health News:American Psychiatric Nurses Association 29th Annual Conference: Continuing Education and Collaboration in Psychiatric-Mental Health and Nursing 3Health News:Medflow Launches MEDFLOW 2.0 EHR – The Cloud-Based Ophthalmology EHR 2Health News:Dephinitive Systems Is Getting a New Name 2
... Still Feel Targeted By Tobacco Advertising and Find It,Easy ... across Kansas will,rally against tobacco on April 2 as ... annual Kick Butts Day, sponsored by the Campaign,for Tobacco-Free ... a list of local events, go to http://www.kickbuttsday.org/events ...
... Still Feel Targeted By Tobacco Advertising & Find It,Easy ... across Florida,will rally against tobacco on April 2 as ... annual Kick Butts Day, sponsored by the,Campaign for Tobacco-Free ... a list of local events, go to, http://www.kickbuttsday.org/events )., ...
... 27 Marshall Erdman &,Associates (Erdman) was ... Healthcare,s" 2008 Construction & Design Survey. The ... industry; it,examines year-over-year sales, contracted square footage ... and number of architects, engineers,and interior designers., ...
... knowledge and building important international relationships is top ... DendriMed Research Director Dr Raisa Monteiro, when she ... in May. , One of two Australian life ... candidates for the prestigious 2008 Advancing BioBusiness Award, ...
... alliances that,lead to increased sales and are mutually ... selection of compatible partners. Companies,that succeed in alliance ... articulating the rationale behind the effort, and then,choosing ... Practices, LLC,s white paper "Generating Value From Strategic,Alliances ...
... Practice Information Management Software Introduces Comprehensive Patient and Information Tracking ... ... Back-Up, DALLAS, March 27 Eklin Medical Systems, a ... Practice Management software for veterinary care,(VIA(R)), is showcasing VIA,s new Hospital ...
Cached Medicine News:Health News:Kansas Kids 'Kick Butts' on April 2 2Health News:Kansas Kids 'Kick Butts' on April 2 3Health News:Florida Kids 'Kick Butts' on April 2 2Health News:Florida Kids 'Kick Butts' on April 2 3Health News:Florida Kids 'Kick Butts' on April 2 4Health News:'Modern Healthcare' Names Marshall Erdman Nation's Top Design-Build Company 2Health News:DendriMed scientist seeks to fast-track success 2Health News:Eklin VIA(R) Showcases Hospitalization Functionality to Veterinary Care Market 2Health News:Eklin VIA(R) Showcases Hospitalization Functionality to Veterinary Care Market 3
(Date:6/30/2015)... , June 30, 2015  Today, the National Mobility ... the 2015 National Mobility Awareness Month Local Heroes Contest ... Hero online entries that received 1.3 million votes. The ... , Toyota Mobility , and Valley Honda ... and Vantage Mobility International (VMI) and ...
(Date:6/30/2015)... 2015  Avanir Pharmaceuticals, Inc. today announced top-line ... treatment with NUEDEXTA ® was associated with ... affect (PBA) in patients with traumatic brain injury ... characterized by sudden and uncontrollable outbursts of laughing ... brain injury. PRISM II is a phase IV ...
(Date:6/30/2015)... June 30, 2015  EnteroMedics Inc. (NASDAQ: ETRM ... neuroblocking technology to treat obesity, metabolic diseases, and other ... public offering  of 40,229,886 units. Each unit consists of ... A warrant to purchase one share of common stock, ... one share of common stock, at a purchase price ...
Breaking Medicine Technology:NMEDA Announces National Contest Winners 2NMEDA Announces National Contest Winners 3Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 2Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 3Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 4Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 5Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 6Avanir Pharmaceuticals Announces Positive Top-line Results from Stroke and TBI Cohorts of PRISM II Study 7EnteroMedics Inc. Announces Pricing of $35.0 Million Public Offering of Common Stock and Warrants 2EnteroMedics Inc. Announces Pricing of $35.0 Million Public Offering of Common Stock and Warrants 3
... BROOMFIELD, Colo., April 12, 2011 Lanx ® , ... developing and commercializing innovative devices for spinal surgery, today ... (Concero) at the 2011 American Association of Neurological Surgeons ... Concero system is a minimally invasive fixation alternative to ...
... Living Cell Technologies Limited (ASX: LCT; OTCQX: LVCLY), ... implant therapy to treat diabetes, today announced that it ... through a placement of shares to Otsuka Pharmaceutical Factory, ... Otsuka group of companies. For the placement, Otsuka will ...
Cached Medicine Technology:Lanx®, Inc. Announces Launch of Concero™ Facet Screw System for Spinal Fusion 2LCT and Otsuka of Japan Share Common DIABECELL(R) Vision 2LCT and Otsuka of Japan Share Common DIABECELL(R) Vision 3LCT and Otsuka of Japan Share Common DIABECELL(R) Vision 4LCT and Otsuka of Japan Share Common DIABECELL(R) Vision 5
VACUETTE paediatric tubes have decreased sample volumes and are ideal for small childrens' veins and geriatric patients....
... Coagulation tubes contain a buffered ... available with a citrate concentration ... 0.129 mol/l (3.8%). The mixing ... solution to 9 parts blood. ...
... are available in two versions. ... a clotting activator and is ... serum is required for testing ... is suitable where the testing ...
VACUETTE paediatric tubes have decreased sample volumes and are ideal for small childrens' veins and geriatric patients....
Medicine Products: