View clinical trials related to Ophthalmological Disorder.
Filter by:Convergence insufficiency is a common disorder of binocular vision that can appear as early as childhood after visual effort, and is often associated with a variety of symptoms such as eyestrain, headaches, blurred vision and diplopia. Treatment of symptomatic convergence insufficiency generally involves the intentional and controlled manipulation of a visual target's blur, conjugate and vergence movements around this target, with the aim of normalizing the accommodation and vergence systems and their mutual interactions. Despite the effectiveness of this treatment, compliance is not optimal, ranging from 24% to 91% in the youngest patients. One of the main challenges is to keep patients focused and interested during the potentially tedious and repetitive periods of over-convergence. In order to stimulate the patient's active participation and stable, sustained attention, a dichoptic reading application on a digital tablet has been developed to provide sustained training in ocular alignment and coordination to reduce symptoms and restore binocular function in patients with symptomatic convergence insufficiency.
Ocular injuries, a significant contributor to avoidable blindness globally, impact approximately 55 million individuals each year. Prompt initial treatment is vital for improving vision, yet the scarcity of skilled eye specialists often results in overcrowding at advanced medical centers. Moreover, the COVID-19 outbreak has introduced distinct factors into the management of ocular trauma. This research investigated the epidemiology of ocular injuries during the pandemic and offered observations on the distinctive hurdles and trends encountered.
The newest generation Lucia 621 has a step vault design that is claimed to provide excellent positional and refractive predictability. In order to explore the positional stability, anterior chamber depth stability is examined as marker for haptic buckling comparing positional behaviour after conventional and femtosecond-laser assisted cataract surgery.
To establish a deep learning system of various ocular fundus disease analytics based on the results of multimodal examination images. The system can analyze multimodal ocular fundus images, make diagnoses and generate corresponding reports.
Cellular therapy of the corneal stroma with implantation of mesenchymal stem cells derived from autologous adipose tissue with or without a carrier (scaffold) composed by decellularized human donor corneal stroma is used in patients with corneal diseases such as corneal dystrophies, and keratoconus. For this purpose, the study planned to assess the enhancement of visual acuity, pachymetric, and aberrometric parameters with implantation of autologous mesenchymal adipose tissue-derived adult stem cells (ADASCs) alone, 120 µm thickness of decellularized or recellularized laminas with ADASCs. Three groups will be included in the study: (1) Implantation of a single dose of ADASCs alone without scaffold. (2) Implantation of decellularized human corneal lamina without ADASCs. (3) Implantation of the recellularized human corneal lamina with ADASCs.
Strabismus affects approximately 0.8%-6.8% of the world's population and appears by the age of 3 years in 65% of affected individuals. Manual measurement of deviation is often laborious and highly dependent on the experience of the specialist and the cooperation of the patients. Current strabismus evaluation technologies are heavily dependent on model eyes. Here, the investigators use deep learning to develop an artificial intelligence (AI) platform consisting of three deep learning (DL) systems to screen strabismus, evaluate deviation and propose a surgical plan based on corneal light-reflection photos. The investigator also conduct clinical trial to validate its versatility in clinical practice.
Retinal images can reflect both fundus and systemic conditions (diabetes and cardiovascular disease) and firstly to be used for medical artificial intelligence (AI) algorithm training due to its advantages of clinical significance and easy to obtain. Here, the investigators developed a single network model that can mine the characteristics among multiple fundus diseases, which was trained by plenty of fundus images with one or several disease labels (if they have) in each of them. The model performance was compared with those of both native and international ophthalmologists. The model was further tested by datasets with different camera types and validated by three external datasets prospectively collected from the clinical sites where the model would be applied.
Purpose: The aim of the study was to compare the analgetic effect of two solutions of intracameral anesthesia in patients undergoing cataract surgery and assess the factors influencing the patients' postoperative activities. Methods: In this prospective, single-blind, randomized study, a group of 62 patients undergoing cataract surgery received Mydrane (Mydrane group) or a combination of 1% solution of lignocaine and 0.025% solution of adrenalin (reference group) as an intraocular anesthetic. The analgetic effect of these two anesthetic methods was evaluated using psychological tools - Visual Analog Scale for Pain (VAS Pain) and Brief Pain Inventory-short form (BPI) on the next day after the surgery.
The study is a Randomized Intervention, Multi-Center Study to Determine the Role of Fatty Acids in Serum and Breast Milk in preventing Retinopathy of Prematurity Subjects who meet all inclusion and none of the exclusion criteria will be enrolled into the study. Upon entry into the study, subjects will be randomized and given a unique subject number. A randomized intervention study of 105+105 (number based on power analysis regarding up to date ROP frequency, see 5.1 and 11.1) infants without major malformations born with a gestational age less than 28 weeks + 0 days will be performed.
To determine whether the implantation of an intrastromal corneal ring is an effective treatment for a homogeneous group of mild keratoconus patients.