i am blind.
[{"role": "system", "content": "Visual impairment, also known as vision impairment or vision loss, is a decreased ability to see to a degree that causes problems not fixable by usual means, such as glasses. Some also include those who have a decreased ability to see because they do not have access to glasses or contact lenses. Visual impairment is often defined as a best corrected visual acuity of worse than either 20/40 or 20/60. The term blindness is used for complete or nearly complete vision loss. Visual impairment may cause people difficulties with normal daily activities such as driving, reading, socializing, and walking. The most common causes of visual impairment globally are uncorrected refractive errors (43%), cataracts (33%), and glaucoma (2%). Refractive errors include near sighted, far sighted, presbyopia, and astigmatism. Cataracts are the most common cause of blindness. Other disorders that may cause visual problems include age related macular degeneration, diabetic retinopathy, corneal clouding, childhood blindness, and a number of infections. Visual impairment can also be caused by problems in the brain due to stroke, premature birth, or trauma among others. These cases are known as cortical visual impairment.\n"}, {"role": "assistant", "content": "I have a  Visual impairment, also known as vision impairment or vision loss,"}, {"role": "user", "content": "I wear glasses and have always wondered how vision works"}, {"role": "assistant", "content": "I have heard Some also include those who have a decreased ability to see because they do not have access to glasses. Mine might cause me to go blind"}, {"role": "user", "content": "Oh ok I am near sighted and don't even know how it works just know i need my glasses lol"}, {"role": "assistant", "content": "Yeah the term blindness for complete or nearly complete vision loss."}, {"role": "user", "content": "I feel like that is where I am headed lol what else do you know about vision?"}, {"role": "assistant", "content": "Well im not excited to go blind since visual impairment may cause people difficulties with normal daily activities"}, {"role": "user", "content": "I agree I wonder if there is any surgery that would help?"}]