View clinical trials related to Cataract.
Filter by:Background: Phacoemulsification is the most common surgical procedure performed in the United States and European Union and sedation is commonly used during phacoemulsification to help alleviate patient anxiety and prevent the patient from interfering with the procedure. The investigators have administered ketamine in addition to midazolam in this regard. To study the effectiveness of this technique, The investigators proposed a study to determine if adding low-dose ketamine to midazolam has any beneficial (or negative) effects on operating conditions, patient satisfaction, and recovery during and after unilateral phacoemulsification procedures performed using topical anesthesia and intravenous (IV) conscious sedation. Methods: In a free-standing Outpatient Surgery Center, the investigators conducted a randomized, double-masked, 3-arm, prospective comparison of IV midazolam only vs. midazolam with ketamine 5 mg IV vs. midazolam with ketamine 10 mg IV. The investigators then measured a single surgeon's assessment of surgical conditions, self-reported patient satisfaction, postoperative pain score, and duration of postoperative stay. The investigators also analyzed the dose of midazolam required to meet subjective anxiolysis in each group.
The purpose of this study was to evaluate the safety and effectiveness of the HARMONI® Modular Intraocular Lens System with a toric optic (HMTIOL) in subjects with pre-existing corneal astigmatism in need of cataract surgery.
Despite the advantages already demonstrated by FLACS, these surgeries still require ultrasonic devices for fragmentation of the lens. The ultrasonic energy used during phacoemulsification may induce complications such as reduction of endothelial cells and corneal edema. In this sense, it would be beneficial to develop surgical techniques that eliminate the need for ultrasound. The group of surgeons of Alfredo Tranjan Ophthalmic Center, recently developed a surgical technique of cataract that optimizes the use of the laser, eliminating the need for ultrasound during the surgical procedure. Thus, the crystalline fragmentation process does not involve ultrasound being performed by the laser itself. It is expected that this procedure will reduce the complexity of cataract surgery, and be safer in terms of potential corneal lesions. The present study intends to evaluate the benefit and safety of FLACS without use of ultrasound (USFREE), compared to traditional phacoemulsification surgery using ultrasound in patients with senile cataract. In this sense, it is intended to primarily compare the volume of balanced saline solution (BSS) between surgeries.
This study evaluates the safety and efficacy simultaneous, trans-conjunctival, 25-Gauge vitrectomy and phacoemulsification with intraocular lens implant in patients with metamorphopsia and visual impairment due to idiopathic epiretinal membrane and cataract. All 30 patients recruited underwent complete ocular examination, visual acuity measurement with ETDRS, metamorphopsia assessment with M-Charts and Metamorphometry® and foveal thickness evaluation by sd-OCT preoperatively, at 30, 90, 180 days postoperatively.
The primary objective of this exploratory study is to assess preliminary efficacy and safety of rhNGF when administered as eye drops to patients after cataract and refractive surgery. The main criteria for evaluation were: - Change from baseline in SANDE scores for severity and frequency assessed at 8 weeks of treatment (primary efficacy endpoint) - Changes in Cornea vital staining with fluorescein (National Eye Institute [NEI] scales) assessed at 8 weeks of treatment (co-primary efficacy endpoint) - Changes in conjunctiva vital staining with fluorescein (NEI scales) (secondary efficacy endpoint); - Changes in Tear Film Break-Up Time (TFBUT)(secondary efficacy endpoint); - Changes in Cochet-Bonnet corneal aesthesiometry (secondary efficacy endpoint); - Changes in Nerve count and morphology at scanning laser in vivo corneal confocal microscopy (only patients who had Laser-Assisted In situ Keratomileusis [LASIK] surgery) (secondary efficacy endpoint); - Changes in SANDE scores (face values) for severity and frequency (secondary efficacy endpoint); - Incidence and frequency of treatment-emergent adverse events (TEAEs), assessed throughout the study (safety endpoint).
Sensitivity and specificity of current screening methods for childhood cataracts is poor. This results in delayed diagnosis and management which can decrease the visual prognosis following cataract surgery. It also results in many false positives with resultant unnecessary healthcare costs in specialist paediatric ophthalmology services. This study compares the accuracy of cataract screening using infrared light compared to white light in a population of children attending eye clinic.
This is a prospective, non-randomised, controlled, single-surgeon, single-center post-market clinical follow up study whereby patient undergoing routine cataract surgery will have bilateral implantation of a recently introduced TGA (Therapeutics Goods Authority, Australia) approved trifocal intraocular lens FineVision Evo (PhysIOL, Liège, Belgium). The primary and secondary effectiveness data for visual acuity, defocus curves, contrast sensitivity and any adverse events will be collected.
This is a randomized controlled trial to investigate the effect of cataract surgery on the socioeconomic status of cataract patients in rural area of Southern China.
The objective of this study is to evaluate the IOP variation before and 30 days after performing phacoemulsification through pneumatic tonometry, in addition to evaluating the factors possibly related to this variation.
This study seeks to determine whether a smartphone application called CRADLE (ComputeR Assisted Detection of LEukocoria) has the potential to improve the detection of leukocoria. There will be no impact on participants' health outcome. This study will be performed in two parts, each with a distinct cohort of patients. Part 1 will assess the feasibility of various techniques/conditions for using CRADLE within patients known to have leukocoria. Part 2 will estimate the sensitivity and specificity of CRADLE to detect leukocoria (using the techniques selected from information gathered in Part 1) as compared to an ophthalmoscope, within patients referred to the clinic for suspected leukocoria. PRIMARY OBJECTIVES: - To determine the most effective usage of a camera phone application (CRADLE) to maximize detection of leukocoria in patients with retinoblastoma, congenital cataracts, and glaucoma. - To estimate the sensitivity and specificity of a camera phone application (CRADLE) in detecting leukocoria.