View clinical trials related to Cataract.
Filter by:the goal of this intervention study is to compare prospectively the accuracy of the power calculation between both groups, the intraoperative aberrometry (ORA) vs barrett universal II preoperative calculation (control group) . Researchers will compare ORA group vs control to see changes in spherical equivalent and uncorrected distance visual acuity
The goal of this clinical trial is to evaluate two separate operating room cataract measuring tools in predicting the residual astigmatism (prediction error) in patients with corneal astigmatism. The main question it aims to answer is: Show the refractive predictability comparing the use of Operating Room cataract toric lens placement tools against the standard manual technique. Participants will be implanted with the TECNIS Toric II IOL Lens Model ZCU; the second eye, if applicable, is to be implanted within 45 days of the first-eye surgery. Researchers will compare two Operating Room cataract lens placement tools: the Zeiss CALLISTO vs. the Wavetec AnalyzOR to determine refractive predictability.
In modern cataract surgery, residual astigmatism continues to be one of the major factors influencing patients' visual quality and satisfaction. The goal of this study is to compare the clinical outcomes of femtosecond laser arcuate keratotomy in one eye and Toric intraocular lens implantation in the contralateral eye for astigmatism correction in patients undergoing femtosecond laser-assisted cataract surgery. The study is a prospective randomized comparative study. Patients with binocular regular corneal astigmatism ranging from 0.75 to 3.00 D will be recruited. The patient will randomly receive femtosecond laser arcuate keratotomy in one eye and receive Toric intraocular lens implantation in the contralateral eye. Long term evaluation will be performed to compare the visual acuity, subjective manifest refraction, and corneal topography between groups.
The goal of this multicenter non-inferiority randomized controlled trial is to compare the efficacy of phacoemulsification with intraocular lens implantation (PEI) combined with goniotomy (GT) and PEI combined with medical therapy (MED) in the treatment of medically-controlled primary open-angle glaucoma (POAG) with cataract. The main questions it aims to answer are: - Whether the PEI+GT was non-inferior to PEI+MED with regard to the intraocular pressure lowering effect in medically-controlled POAG. - Whether the PEI+GT has value of health economics. Participants will be randomized to receive either PEI+GT or PEI+MED, and followed up with a 1-year period as a primary outcome.
The objective of this study was to evaluate the clinical and patient reported outcomes after bilateral implantation of the AcrySof™ IQ Vivity™ Toric intraocular lens.
Subjects who had a bilateral age-related cataract surgery with the IOLs AT ELANA 841P and AT LISA tri 839MP will be contacted and invited to attend a postoperative visit more than one year after the surgery
The goal of this observational prospective clinical study is to learn about the clinical outcomes three months after binocular implantation of Asqelio Trifocal Toric IOL in 30 patients submitted to cataract surgery following standard clinical practice. The main questions it aims to answer are: How rotationally stable is the lens after implantation and how effective is in the correction of refractive astigmatism. Additionally, the visual performance at different distances will be assessed, as well as the patient-reported outcomes.
In order to better cope with complex situations of cataract surgery, we designed and improved a new set of multi-functional cataract surgery auxiliary devices, including ophthalmic surgery auxiliary hooks, eye retractor hooks and membranous cataract scissors. Their common feature is that they have the function of 2-3 traditional surgical instruments, which can be switched in operations, reducing the replacement of different surgical instruments, lowing the number of surgical instruments in and out of the incision, reducing trauma and improving surgical efficiency. The purpose of this multi-center prospective clinical study is to verify the advantages of this new group of multifunctional devices and further summarize the experience and improvement by comparing the safety and effectiveness of traditional cataract surgical instruments combined with new multifunctional cataract assisted surgical instruments and traditional cataract surgical instruments alone.
Prospective, interventional, non-invasive, monocentric, longitudinal, non-randomized study
Direct comparison study between previous LASIK or non-LASIK cataract eyes, the performance between non-LASIK and LASIK patients were (i) Ophthalmic examinations: UDVA, CDVA and uncorrected near visual acuity (UNVA) (40cm) and (ii) Refractive prediction error: defined as difference between postoperative sphere and target refraction.