Presbyopia in Breast Cancer Survivors
关键词
抽象
描述
Chemotherapy drugs, used in cancer treatments, may change the timing of a vision condition known as presbyopia. Presbyopia is the inability to focus the eye on close objects, by a process called accommodation. It is caused by an increase in the stiffness of the lens of the eye that occurs naturally with aging. Currently, there are no known treatments that can be used to prevent or delay presbyopia. As a result, the risk, in later life, of having this condition is essentially 100%.
The purpose of this research is to determine whether chemotherapy drugs are delaying the age at which people develop symptoms of presbyopia. We hope to establish that presbyopia can in fact be delayed with the use of drugs, which would ultimately lead to further research in this area.
日期
最后验证: | 11/30/2011 |
首次提交: | 12/29/2005 |
提交的预估入学人数: | 12/29/2005 |
首次发布: | 01/03/2006 |
上次提交的更新: | 12/07/2011 |
最近更新发布: | 12/08/2011 |
实际学习开始日期: | 07/31/2005 |
预计完成日期: | 04/30/2006 |
状况或疾病
相
资格标准
有资格学习的年龄 | 45 Years 至 45 Years |
有资格学习的性别 | All |
取样方式 | Non-Probability Sample |
接受健康志愿者 | 是 |
标准 | Inclusion Criteria: - ages 45-60 - ability to understand and provide written consent in English Exclusion Criteria: - blindness - visual defects leading to accommodative failure - severe myopia - recurrent breast cancer |