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We list hundreds of Clinical Trials about "Performance of Rigid Gas Permeable (RGP) Scleral Contact Lenses With a Passive Artificial Iris" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.
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Data from 15 healthy subjects will be recorded in two testing sessions spread on two days, using three lens designs (A, B and C). Before the measuring days, each subject will undergo an extra fitting session of a large-diameter scleral contact lens on the dominant eye, assessed by an experienced practitioner. The fitting data will be used to custom-make the three lens designs for each subject, thus ensuring their comfort and safety during the days of the experiments. During the...
This study will be done with subjects who already habitually wear scleral contact lenses. The study lens is made with a material that is already widely available and has a new design. It will be fit by the investigators and will be assessed and at one week and 1 month.
The objective of this clinical investigation is to collect valid scientific safety and effectiveness data on the Acuity 200 (fluoroxyfocon A) Rigid Gas Permeable Contact Lens, manufactured from a newly developed rigid gas permeable material that is highly permeable to oxygen. The clinical performance data reported from this study is intended to be submitted to the U.S. Food and Drug Administration Center for Devices and Radiological Health (CDRH) in support of a 510(k) premarke...
The purpose of this research is to compare the on-eye performance of 12 month daily wear versus 6-night extended wear and 30-night extended wear of novel hyper-oxygen permeable contact lenses by studying its effects on human eyes. Usual and customary care will be given in the form of eyeglasses and/or contact lenses.
Study to evaluate the safety and efficacy of HI-BRITE large diameter rigid gas permeable contact lens (hexafocon b) test when worn on a daily wear basis in the correction of myopia/hyperopia/astigmatism/presbyopia/ and irregular cornea.
The purpose of this study is to evaluate end of day (EOD) visual acuity (VA) at distance when wearing Precision1™ contact lenses compared to Acuvue® Moist contact lenses.
Tangible Hydra-PEG is a novel coating technology designed to improve lens wettability, deposit resistance, and tear film breakup time. This is a randomized double masked cross-over study to examine contact lens discomfort and dry eye symptoms with Tangible Hydra-PEG treated scleral lens wear compared to untreated scleral lens wear in the dry eye patient population.
This is a study to evaluate the performance of Lid Scrubs when added to the daily regimen of scleral lens wear. Lid Scrubs contain surfactants and chemically developed Ringer's solution with microbial attributes. Lid Scrubs are typically used in the treatment of blepharitis. This study is geared towards showing added benefits to scleral lens patients when adding Lid Scrubs to their daily regimens. This study will also show if Lid Scrubs are capable of antimicrobial properties o...
To examine the effects of rigid gas permeable contact lenses on the progression of myopia (nearsightedness) in children To determine what changes in the eyes cause certain eyes to progress in nearsightedness more slowly
The purpose of this study is to evaluate the rotational behavior of DT1 Toric contact lenses.
The purpose of this research study is to compare the performance of two different types of Alcon soft toric study contact lenses to obtain information on study lens orientation.
A refractive error is the most common reason for reduced visual acuity. Myopia, hyperopia, astigmatism and presbyopia belong to the four basic refractive errors and, unfortunately, cannot be prevented. There are different tools to correct them, like spectacles, contact lenses, and refractive surgery. Many different contact lenses are available, the two large groups create rigid contact lenses and soft contact lenses. It is a common knowledge that the presence of a contact lens ...
The purpose of this study is to compare the clinical performance of three contact lens care products, and to compare their effects on contact lenses.
The purpose of this study is to explore overall vision with BIOFINITY® ENERGYS™ contact lenses as compared to BIOFINITY® contact lenses after one week of wear.
Multipurpose solutions (MPS) are the most commonly prescribed regimen to clean, disinfect and rinse rigid lenses. The preservatives used in MPS may cause hypersensitivity and the presence of quaternary ammonium compounds (QAC) may increase development of antiseptic resistance mediated by QAC resistance genes, thus lowering the efficacy of disinfection. Povidone-iodine (PVI) has been safely used as a disinfectant for ophthalmic operations and eye drops. The cleadew GP (Ophtecs, ...
The purpose of this study is to evaluate visual acuity at distance when wearing DDT2 contact lenses compared to Clariti contact lenses.
The purpose of this study is to evaluate visual acuity at distance when wearing DDT2 contact lenses compared to Acuvue Moist contact lenses.
The purpose of this study is to evaluate the impact of back surface molded marks (MM) applied to delefilcon A contact lenses as measured by the incidence of ocular discomfort device related adverse events with DAILIES TOTAL1® Multifocal contact lenses with molded marks (DT1 MF MM) and current DAILIES TOTAL1® Multifocal contact lenses (DT1 MF).
The aim of this prospective study is to evaluate the clinical performance of habitual wearers of methafilcon A aspheric lenses after a refit with fanfilcon A sphere lenses for 4 weeks of daily wear.
The purpose of this study is to evaluate the performance of ACUVUE OASYS® 1-DAY and DAILIES TOTAL1® with respect to visual acuity, dryness and discomfort in a symptomatic study population of monthly or bi-weekly replacement lens wearers.
This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).
This will be an up to six months, subject-masked, contralateral, parallel-group, randomised, daily wear study. All subjects will wear the Test lens in one eye and the Control lens in the other eye. Data from the first four weeks of Test and Control lens exposure will be used for the FDA 510 (k) submission.
The purpose of this study is to evaluate cholesterol sorption by Air Optix® Aqua lenses compared to ULTRA lenses after 30 days of wear.
The purpose of this study is to evaluate the performance of two commercially-available silicone hydrogel contact lenses in normal and low humidity environments after at least 7 days of wear.
to compare the performance of currently marketed Johnson & Johnson Acuvue Vita (senofilcon C) soft contact lenses to the currently marketed Bausch + Lomb Ultra (samfilcon A) soft contact lenses among adapted wearers of Acuvue Oasys soft contact lenses.