Active clinical trials for "Aniridia"

The purpose of this study is to determine the safety and efficacy of Morcher iris diaphragms in the treatment of congenital and acquired aniridia. Morcher iris diaphragms are intraocular devices that are designed to provide an artificial pupil for patients suffering from partial or complete aniridia. These devices are constructed from clinical quality, ultraviolet light-absorbing, opaque black polymethylmethacrylate (PMMA). After surgical implantation, patients are monitored over the course of 1 year to measure any changes to visual acuity and improvements in light and glare sensitivity.

This is a Phase 2, multicenter, open-label study evaluating the overall systemic and ocular safety profile of ataluren in nonsense mutation aniridia as determined by the incidences of treatment-emergent adverse events (TEAEs) as well as abnormal findings on laboratory assessments, vital signs, physical examinations, ophthalmoscopy, and slit-lamp examination. Participants who complete PTC124-GD-028 ANI (NCT02647359) meet all inclusion and none of the exclusion criteria will be enrolled into this study.

The ARGOS-IO pressure sensor is intended to be implanted in the human eye in combination with Boston Keratoprosthesis (BKPro) surgery and to remain in place indefinitely. It is intended to be used together with the hand-held Mesograph reading device to telemetrically measure the intraocular pressure (IOP) of patients with a BKPro. The purpose of this study is to evaluate the safety and performance of the ARGOS-IO system in patients undergoing concomitant implantation of a BKPro and an ARGOS-IO sensor over the 12 month period beginning at implantation.

Patients with aniridia have positive angle kappas.

This study will examine specific gene changes in patients with aniridia, a disease in which the iris (colored part of the eye) is absent or partially absent, and will correlate the changes with clinical manifestations of the disease. In aniridia, the eye often appears to have no color, but only a larger than normal pupil. Patients may have impaired vision and cataracts, glaucoma, nystagmus (rapid, involuntary eye movements), photophobia (light sensitivity), displaced lens, underdeveloped retina, and thickened cornea. This study will focus particularly on corneal changes. Patients 4 years old and older with aniridia may be eligible for this study. Candidates are screened with a family history and complete eye examination, including the following: Visual acuity testing using a vision chart. Eye pressure measurement. Fundus photography to examine the back of the eye: The pupils are dilated and special photographs of the inside of the eye are taken to evaluate the retina and measure changes that may occur over time. The camera flashes a bright light into the eye for each picture. Slit lamp examination: Evaluation of the front part of the eye with a special microscope called a slit lamp biomicroscope. Corneal thickness measurement. Participants have blood drawn for genetic testing related to aniridia. Relevant medical information, including disease severity and complications, is obtained over time. Family members may also be requested to provide blood samples for genetic testing.

This study will explore conditions caused by the absence of certain genes on chromosome 11. These conditions include WAGR syndrome, which is characterized by a kidney tumor called Wilm s tumor, aniridia (absence of the iris of the eye), genital and urinary abnormalities, mental retardation, and possibly other symptoms. This study will examine how the genes on chromosome 11 affect people and whether the absence of specific genes is associated with specific symptoms. Healthy normal volunteers, people with isolated aniridia, and people with WAGR or another chromosome 11 gene deletion may be eligible for this study. Participants must be at least 6 years old. Parents of patients may also participate for genetic studies. Participants undergo some or all of the following procedures, depending on whether they are a child, adult, healthy volunteer or parent of a patient: Medical history and physical examination, eye examination, blood, urine and saliva tests, electrocardiogram (EKG) and electroencephalogram (EEG) X-rays, scans and other tests to measure body composition (fat, muscle and bone development and thickness) and MRI to examine the eyes and the brain and to measure abdominal fat Ultrasound studies of the kidneys, ovaries and uterus (in females) and testes (in males) Meal tests, food diaries and food preference tests Questionnaires about eating and sleep habits, personality and character traits and responses to pain and injury Neuropsychological tests Tests of resting metabolic rate, energy expenditure and glucose (sugar) tolerance Hot and cold sensitivity tests, vibration sensitivity test, cold tolerance test and smell identification test Eye and hearing tests Nerve conduction studies and study of sensory information conduction from peripheral nerves to the spinal cord and brain Computer photography Evaluation by sub-specialists (e.g., endocrinologist, ophthalmologist, physiatrist, neurologist or others) as indicated by the patient s medical history and test results

This study will investigate congenital or developmental eye abnormalities that affect the iris, cornea and lens, and are usually accompanied by elevated pressure within the eye. These disorders can cause vision loss, and the increased eye pressure can lead to glaucoma, a condition that may also cause loss of eyesight. Patients with eye anterior chamber eye disease, such as Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, iridocorneal endothelial syndrome, megalocornea, ocular hypertension, and others, are eligible for this study. Participants will have a medical examination, family history, and comprehensive eye examination. Tests and procedures may include photographs of the cornea, iris, and the structure through which fluid that normally circulates behind the cornea drains out of the eye. Some patients may undergo indentation tonography to measure how easily this fluid drains. In this procedure, the patient lies on an examination table and both eyes are numbed with eye drops. A small instrument (tonometer) is placed on the surface of one eye, and with the other eye, the patient looks at an overhead light. Other tests may include photographs of the back of the eye and ultrasound imaging of the structures of the eye. A blood sample may be drawn to study the genetic disorder responsible for the disease. Patients will have follow-up examinations every 6 months for the duration of the study. Medical or surgical therapy will be recommended, as appropriate, for patients who develop elevated eye pressure or vision loss.

Purpose: To assess long-term outcomes of implantation of black diaphragmintraocular lens (BD IOL) in postraumatic aniridia and aphakia due to eye rupture. METHODS: This is retrospective consecutive case series of 14 eyes with post-traumatic complete aniridia and aphakia treated withscleral fixation of BD IOL with. Measurements included ophthalmological comorbidities, best corrected visual acuity (BCVA), complications, and postoperative interventions. The average postoperative follow-up period was 36 months.

The goal of this clinical research study is to collect information and blood samples to try to learn why some people develop cancers and tumors, why some families have more cancers than others, and whether certain genes or regions of DNA (the genetic material of cells) affect a person's risk of getting cancer. This is an investigational study. Up to 1500 patients and family members will take part in this study. All will be enrolled at MD Anderson.