Active clinical trials for "Strabismus"

Oculocardiac reflex during routine strabismus surgery was prospectively observed in association with routine brain wave monitoring. Providence Hospital institutional review board (IRB) approved this observational study without need for consent.

The MOBILITY Project is a prospective, non-randomized, observational, multi-centre evaluation of Health Utility via the SF-12® Health Survey Scores and the SF-6D in patients receiving BOTOX® for therapeutic use.

This study aimed to assess the association of refraction and axial length with near-horizontal heterophoria in a large population-based study of school-aged Chinese children. The study makes a significant contribution to better know the etiology of myopia progression and ocular axial length development. Further, this study will be of interest to the readership of your journal because its noteworthy finding and which could contribute to guide recommendations for targeted interventions to slow myopia progression.

The purpose of this study is to note that one-stage adjustable surgery can be enough to provide satisfactory results for the correction of strabismus in adults thanks to the use of an anesthesia type AIVOC (Target-controlled infusion of Propofol-Remifentanyl)

Strabismus surgery for children is a very common procedure, with a high incidence of emergence delerium in the recovery room. A combination of intravenous ketamine/dexmedetomidine, or ketodex, has been previously shown to reduce emergence delerium in children undergoing adenotonsillectomy. Here, we study its application in strabismus surgery.

Sleep is important in maintaining the physiological function of the human body. Recently several studies have reported that preoperative sleep quality is associated with postoperative emergence delirium (ED) The ED is a common in pediatric patients undergoing general anesthesia with sevoflurane, but studies on the association of sleep quality have been rare. The investigators, therefore, aimed to investigate the relationship between postoperative delirium and pre and postoperative sleep quality in pediatric patients receiving strabismus surgery through this study

Ophthalmology is among the most technology driven of all medical specialties, with advanced medical imaging devices - and specialised computer software - increasingly adopted for routine clinical use. While many such devices are capable of completing specific tasks, lack of "usability" prevents their widespread adoption (i.e., such devices are not easy to learn and remember, or are not efficient or subjectively pleasing to use). Moreover, devices that are difficult to use expose patients to clinical risk as a result of human error during usage. With the introduction of a new medical technology, it is essential, therefore, to have a deep understanding of patients, what they need, what they value, their abilities, and also their limitations. Human factor and usability testing, also known as "human factor engineering", deals with the formal study of people's interaction with their environment (in this case, the binocular optical coherence tomography (OCT) device). Structured, patient-centred, usability testing is essential to the design, clinical validation, regulatory approval, and widespread implementation, of all new medical devices. This is particularly the case for a putative binocular OCT system - a device intended for automated use in visually impaired, often elderly, populations. Although the binocular OCT is already at an advanced stage of hardware development, the EASE study will facilitate an iterative process of operating software and workflow modifications to optimize the device for use in these populations.

Study designed to determine the ability and accuracy of anterior segment optical coherence tomography (AS-OCT) to measure the distance between the corneoscleral limbus and the insertion site of the extraocular muscles (EOM) in adults with and without previous strabismus surgery. And to compare in surgical patients the pre-operative AS-OCT limbal-muscle insertion distance measurement to the intraoperative limbal-muscle insertion measurement using calipers (gold standard).

This screening protocol is designed to help recruitment patients for National Eye Institute (NEI) studies on nystagmus and strabismus. Patients must meet specific requirements of a research study, and this protocol serves as a first step for admitting patients to an appropriate program. Candidates will undergo a medical history, physical examination, eye examination and blood test. The eye examination includes measurement of eye pressure and dilation of the pupils to fully examine the lens, vitreous and retina. Specialized tests will be done only if needed to determine eligibility for a nystagmus or strabismus study. These include routine laboratory tests, non-invasive imaging, questionnaires, and other standard tests. If needed, a test called oculography may be done to record eye movements. There are two procedures for recording and documenting these movements. In the infrared system, the patient wears a pair of glasses or goggles and looks at a red light while the head is kept steady. In the search coil system, the eye is numbed with anesthetic eye drops and a soft contact lens is placed on the eye. Then the patient looks at a red light while the head is held still. Each oculography session lasts 20 to 30 minutes. Photographs of the eye may be taken. When the screening is completed, patients will be informed of their options to participate in a study. Patients who are ineligible for a current study will be informed of alternative treatments or options. No treatment is offered under this protocol.

This study will evaluate potential candidates for future clinical research studies related to diagnosed or undiagnosed genetic eye disorders or diseases. It will not test any new treatments, but it may arrange for standard treatments for existing eye disorders. The purpose of the study is to train eye doctors and medical researchers at the National Institutes of Health in appropriate methods and procedures for treating patients with genetic eye diseases, and to expand the pool of possible participants for future research studies and trials on eye health. Volunteers for this study may be adults and minor children who have been diagnosed with or are at risk for having a genetic eye disease. Candidates may not have any other medical conditions that would interfere with the researchers' ability to perform the examinations and procedures required for this study. Participants will give a complete medical and family history and undergo a series of tests and procedures as part of this research study. The procedures include a full eye examination and vision testing, electrooculography and an electroretinogram to examine the function of the retina, and flourescein angiography to provide information on the flow of blood in the participant's eyes. Participants will provide research material for further studies by giving a blood sample to be held for genetic testing and analysis, and adult participants will also undergo a skin biopsy to provide cell tissue for additional research material. At each clinic visit, participants will receive treatment for their genetic eye disease as needed, including medications or surgical procedures. Participants may remain a part of this study for up to three years.