This study is intended to compare the accuracy of the visual acuity measurement done with a new projected eyechart method when compared to the gold standard (Marco Guyton-Minkowski PAM) before surgery and Snellen wallchart acuity after cataract surgery.
The purpose of this study will be to collect a skin biopsy (skin tissue) or blood sample from each participating patient with retinal degeneration, such as Best’s disease or age-related macular degeneration (AMD), including geographic atrophy (GA). Each skin biopsy or blood sample will be taken to the laboratory of the investigators where skin epithelial cells called fibroblasts, will be induced to make “pluripotent stem cells” or “iPSCs”. These iPSCs will be differentiated into retina epithelial cells which will be tested for their ability to function as new retinal cells in animal models of retinal degeneration. Because these special cells are individualized or patient-specific, they will not be rejected by that individual patient, and thereby represent the first step in a potential future treatment for retinal disease. Cells will also be processed at the New York Stem Cell Foundation IPSC core facility using the procedure described above. The Medical University of South Carolina (MUSC) and New York Stem Cell Foundation (NYSCF) will enter into a material transfer agreement (MTA) initiated by the MUSC Foundation for Research Development. Once MTAs are initiated, samples will be coded at MUSC. Coded samples will be sent via dry ice to ensure full competency to the NYSCF. Samples will remain coded at MUSC and will not be released to the NYSCF. Fibroblasts will be reprogrammed using the method described above and sent back to MUSC (as iPS cells) for the research purposes of this study. Cells will only be identifiable to the NYSCF by disease, sex, and gender. Once cells are received by the NYSCF they receive a number bar code for further processing and are in no way traceable to the patient by the NYSCF. Reprogrammed cells will be stored at the NYSCF biorepository but only shared with the knowledge of MUSC. These samples will be used for the purposes of this study. Any other use will be evaluated by the investigators and the MUSC Foundation for Research Development and the appropriate action taken. Once samples are processed that will not be withdrawn from the biorepository. The NYSCF biorepository is a secure facility with only authorized personnel having access to the facility
This research is being done with children who have a condition called intermittent exotropia. Intermittent exotropia is the medical term used when the eyes turn out some of the time and are straight at other times. Intermittent exotropia is one of the most common types of eye misalignment in children.
Intermittent exotropia is often treated with surgery on the eye muscles to make the eyes straight again. There are different ways to do this surgery to straighten the eyes. One way is to operate on two muscles on one eye. Another way is to operate on one muscle on each eye. Both ways of doing the surgery work well but we do not know if one way is better than the other. This is the reason why the study is being done.
This study is being conducted with children who have a condition called intermittent exotropia. Intermittent exotropia is the medical term used when the eyes turn out some of the time and are straight at other times. Sometimes the turning out of the eyes becomes worse and eye muscle surgery or another treatment is needed to straighten the eyes. Sometimes the intermittent exotropia gets better on its own. We do not know how often this happens. Some eye doctors who have children with intermittent extropia put an eye patch over one eye for a few hours each day. We do not know if this helps and this study is being done to find out if it does.
We are recruiting approximately 100 pediatric patients ages 2-12 within the Storm Eye Institute's pediatric clinics to compare findings of the Pediavision plus optix vision screener to the findings of a pediatric ophthalmologic exam and evaluate its efficacy.