Active clinical trials for "Astigmatism"

This study is a 6-month, prospective, multicenter, randomized (1:1:1), subject-masked and evaluator-masked, bilateral clinical investigation of the TECNIS IOL Models C1V000 and C2V000 versus the TECNIS Eyhance™ Model ICB00 IOL. The study will be conducted at up to 15 sites in EU, AU, NZ and/or AP and will enroll up to 225 subjects to achieve approximately 67 bilaterally implanted subjects in each lens group. Allowing for 10% lost-to-follow-up, this will achieve approximately 60 evaluable subjects in each lens group at 1, 3, and 6 months. The eye implanted first will be considered the primary (monocular) study eye.

"GoCheck Kids" has added to its iPhone 7+ smart phone with flash concentrator a non-accommodating glow box fixation target. In pediatric eye patients, the "GCK" with glow box is compared to cycloplegic refraction as well as School Bus Accommodation-relaxing skiascopy, "2WIN" photoscreener and "Retinomax."

Low amounts of postoperative residual astigmatism may worsen the visual performance of patients implanted with presbyopia- correcting intraocular lenses (IOLs). Although extended depth of focus (EDoF) IOLS have introduced optical improvements, it is important to determine the tolerance of these IOLs to postoperative astigmatism. This is important for an appropriate surgical planning. Therefore, the aim of this study is to simulate and assess the impact of mild amounts of residual mixed astigmatisms with the axis oriented in different positions (vertical, oblique and horizontal) in eyes implanted with the Vivity® IOL.

A prospective comparison of eyes undergoing wavefront-guided LASIK in one eye and wavefront-guided PRK in their fellow eye for myopia.

The purpose of this study is demonstrate substantial equivalence of an investigational contact lens disinfecting solution to a commercially available contact lens solution in silicone hydrogel and soft contact lens wearers.

The purpose of this study was to investigate the overall clinical comfort performance of enfilcon A (test) lens and senofilcon A (control) lens over 15-minutes of lens wear.

To construct a computerized intraoperative keratometer to analyze the axis of corneal astigmatism accurately as well as rapidly by self-designed software during surgery.

Compared to laser-assisted in situ keratomileusis (LASIK), Photorefractive Keratectomy (PRK) is associated with more discomfort and requires more downtime. However, it is oftentimes considered the preferred method of refractive surgery for patients with dry eye syndrome, high refractive errors, thin corneas, or those with more active lifestyles who may be more prone to dislodging their LASIK flaps. We hypothesize that the use of bandage contact lenses soaked in proparacaine will decrease pain levels compared to solely the use of bandage contact lenses after PRK.

Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation. Primarily, this will allow evaluation of the performance of the spot photoscreener in the haitian children population. Secondarily, this study will gather epidemiological information on vision problems in the haitian children population.

The aim of this trial is to assess Complete Easy Rub compared to a competitor multi-purpose solution in terms of lens cleanliness, subjective response and ocular response, when lenses are worn bilaterally on a daily wear basis for two months. The hypotheses for this trial are: Lens cleanliness measures between solutions will be no different. Subjective ratings between solutions will be no different. Ocular response between solutions will be no different.