View clinical trials related to Cornea.
Filter by:In order to examine the cells of the corneal epithelium in the patients who receive corneal transplantation after collagenase A assisted cultivated oral mucosa epithelium transplant (CA-COMET), we analyzed the specimens from penetrating keratoplasty with immunochemical staining.
This will be a single-centre, randomized, pilot study. 30 patients with diabetes who previously had received Argon laser photocoagulation will be enrolled.
This study is a prospective, interventional, open-label, single arm, non-randomized trial treating 30 patients with peripheral or mixed neuropathic corneal pain at their baseline exam and following 45 days and 90 days of daily use with the TrueTear™ ITN device.
The development and validation of a concise, practical, on-line, self-administered, self-archiving, and self-scoring PRO questionnaire for routine clinical use in refractive surgery is the primary study objective. Secondary objectives are to gather outcome data from patients before and after surgery in each of the following domains comprising key elements of vision related quality of life: spectacle dependence; quality of vision; eye comfort; freedom; emotional well-being; and overall satisfaction with the results of surgery. Patients undergoing refractive surgery at Moorfields Private Outpatient Clinic will be enrolled in the study in the validation phase.
The objectives of this study are to determine the agreement of measurements between the IOLMaster 700 SW Vers. 1.70 and IOLMaster 700 SW Vers. 1.50 and Pentacam, as well as to evaluate the repeatability and reproducibility of the IOLMaster 700 SW Vers 1.70. The following parameters will be evaluated for Total Keratometry, (TK) and Posterior Corneal Surface (PCS): - cylinder (CYL), Axis (A) - spherical equivalent (SE) Specific Objectives: 1. To compare the agreement of SE between IOLMaster 700 SW Vers. 1.70 and IOLMaster 700 SW Vers. 1.50 (Carl Zeiss Meditec AG, Jena, Germany) 2. To compare the agreement of Cylinder magnitude and axis between IOLMaster 700 SW Version 1.70 and Pentacam 3. To evaluate the repeatability and reproducibility of the IOLMaster 700 SW Vers. 1.70 for all measurement parameters listed above
To analyze the difference between measured total corneal astigmatism and actual corneal astigmatism under different region modes and optimize the region setting.
The aim of this pilot study is to assess the ability of a new optical coherence tomography system to obtain information on biomechanics of the cornea.
To determine whether the implantation of an intrastromal corneal ring is an effective treatment for a homogeneous group of mild keratoconus patients.
Based on the corneal morphometry instrumentation Oculus Pentacam, which is commonly used before and after clinical refractive surgery, we will collect the corneal morphological and biologic parameters of the population under refractive surgery screening in refractive surgery centers around the country, and construct corneal morphology database in different living areas of Chinese people. Based on this, compared with the suspected keratoconus and keratoconus population, the screening criteria and reference standards accord with the characteristics of keratoconus of Chinese ethnic will be achieved.
To evaluate the mean changes in Endothelial Cell and Corneal pachymetry in eyes that operated under N2O + sevoflurane and O2 + sevoflurane general anesthesia.