View clinical trials related to Trichiasis.
Filter by:in recent years there has been a significant shift from this destructive procedure to a reconstructive procedure such as Anterior Lamellar Recession (ALR) and Bilamellar Tarsal Rotation (BLTR).
The objective of this study is to determine if there is a significant difference in post-operative trichiasis at 12 months comparing a new procedure, the Bevel/rotate/advance procedure (BRAP), to the Trabut procedure among repeat surgery patients.
The research group developed a surgical simulation device, the Human Eyelid Analogue Device for Surgical Training And skill Reinforcement in Trachoma (HEAD START), to bridge the gap between classroom and live-surgery training specifically for trichiasis surgery. In most settings, HEAD START is utilized once during training, then surgeons move on to live surgery and typically do not return to the simulator. The research team is interested in determining whether HEAD START provides benefit for long-term trichiasis surgery training, since many surgeons operate seasonally, with long periods of downtime between surgical camps and with little field supervision. Participating surgeons will practice on HEAD START weekly, with monthly feedback from a senior supervisor. Researchers will assess their skill level at the start of HEAD START training and again at the start of the new surgical season in the fall of 2017. Researchers will also administer questionnaires to elicit feedback on the HEAD START training and supervision process.
The purpose of this study is to determine whether the rate of post-operative trachomatous trichiasis differs significantly between bilamellar tarsal rotation surgery with an incision height of 3 mm, bilamellar tarsal rotation surgery with an incision height of 5 mm, and Trabut surgery.
The investigators aim to evaluate a new potentially cost-effective approach to improving trichiasis surgery outcomes, perioperative topical anti-inflammatory therapy. The investigators hypothesize that adjunctive topical fluorometholone therapy following trichiasis surgery will reduce the risk of recurrent trichiasis. The rationale for this hypothesis is that interruption of inflammation postoperatively would reduce postoperative scarring, leading to better outcomes. As an initial step toward evaluating this modality, the investigators believe it to be necessary to evaluate topical corticosteroid therapy in a safety-oriented study, for which the investigators also hypothesize that fluorometholone will have a perioperative safety profile acceptable for large-scale programmatic use. Topical corticosteroid therapy is associated with potential risks of cataract induction and intraocular pressure (IOP) elevation in susceptible individuals. Fluorometholone has lower intraocular penetration than alternative corticosteroids, with correspondingly less IOP-raising effect while still having favorable effects on conjunctival inflammation, and is a low-cost generic drug. Its poor delivery of corticosteroid into the eye itself provides an advantage in this setting, as the major side effects of therapy are the result of intraocular effects, and therapy only is needed to the conjunctiva. However, prior to use in a large-scale trial it is sensible to make sure adverse outcomes are not observed in a substantial number of TT patients in a smaller scale trial. Secondary goals of such a trial are to evaluate alternative topical corticosteroid dosing schedules to identify an optimal dosing schedule and to identify any preliminary signals of potential efficacy.
To achieve the goal of trachoma control as mandated by the World Health Organization, countries must reduce the backlog of trichiasis surgery cases to less than 1/1,000 of their population. However, these cases reside in rural villages in trachoma endemic districts, and finding them to offer services is a challenge. Community Treatment Assistants (CTAs) are village residents who are trained to offer Mass Drug Administration (MDA) to their communities and hence are in contact with most residents. A training guide and tool for screening for trachomatous trichiasis (TT) will be developed to train CTAs in rural Tanzania to identify cases in their communities and refer them to surgery. Compared to the current process by which CTAs passively screen for TT if cases complaint, investigators hypothesize that the trained CTAs will identify twice the usual number of TT surgery cases during ongoing community antibiotic administrations for trachoma and will also miss fewer cases. If this simple system is effective, it can be implemented widely to screen communities for cases of TT. Residents from thirty-six villages holding MDA, for whom a complete census is available, will be randomized on a 1:1 basis to intervention (where the CTAs receive the enhanced training from the enhanced training team) and usual assessment (where the CTAs receive the usual instructions from the regular MDA team). In both arms, the CTAs will keep records of all cases they have screened as positive for TT amongst the residents. A Master TT grader will grade all screened cases of TT to determine the rate of true positivity in both arms.In addition, he will examine a random sample of residents who are screened as negative to detect potentially missed cases and estimate the total burden of trichiasis cases in both arms as well.The assessments of the Master TT grader will serve as the gold standard for calculations of sensitivity, specificity, and positive and negative predictive values of the enhanced training versus usual assessment methods.
Trachoma is the leading infectious cause of blindness worldwide. Recurrent infection by Chlamydia trachomatis causes a gradual scarring process of the inner surface of the eyelid (conjunctiva) leading to in-turning of the eyelids (entropion) and lashes touching the eye (trichiasis). The rate of progression and the severity of disease are variable. Some people develop severe disease with extensive entropion and trichiasis, whilst others have a mild problem with only a few lashes touching the eye, which does not progress. In more advanced cases there is a broad consensus that the entropion / trichiasis should be corrected by surgery. In mild cases (minor trichiasis: 1-5 lashes touching the eye) the optimal treatment is uncertain. Some advocate early surgery to turn the eyelid out for any individual with one or more lashes touching any part of the eye. Others consider this to be too early for surgical intervention, as surgery can have a high recurrence rate and complications can arise. Instead, they recommend that minor trichiasis can be managed by epilation (pulling out lashes with forceps). In many endemic regions the uptake of surgery is low, with many patients preferring to epilate for mild disease. The primary purpose of this study is to compare the outcome of immediate surgery to regular epilation for the management of minor trichiasis. The epilation would be done by a person with good eyesight using proper epilation forceps.
Trachoma is the leading infectious cause of blindness worldwide. Recurrent infection by Chlamydia trachomatis causes in-turning of the eyelids / lashes (trichiasis), leading to corneal damage and blindness. The WHO recommends corrective eyelid surgery for trichiasis. Unfortunately, trichiasis frequently returns following surgery. The purpose of this study is to compare the outcome of surgery (at one and two years) for trichiasis using two currently used alternative suture types: non-absorbable (silk) and absorbable (vicryl). We, the researchers, hypothesise that the supportive presence of the absorbable suture for a longer period produces more stable wound healing, leading to a better outcome.
Trachoma, an ocular infection caused by C. trachomatis, is the second leading cause of blindness worldwide.Years of repeated infection with C. trachomatis cause the eyelid to scar and contract and ultimately to rotate inward such that eyelashes rub against the eyeball and abrade the cornea (trichiasis). The World Health Organization (WHO) has endorsed a multi-faceted strategy to combat trachoma, which includes surgery to correct trichiasis. Despite this encouraging news, under the best of circumstances the recurrence rate of trichiasis following surgery is disappointingly high. The objective of our project is to conduct a randomized, controlled clinical trial of post-surgical antibiotic treatment, comparing oral azithromycin to topical tetracycline, for trichiasis surgical patients in Ethiopia with the goal of determining the impact of treatment on rates of trichiasis recurrence at one and two years.