up. my eye health was also checked which is impossible to do online. >> the eye exam is expected to determine if the patient does or doesn't have things like glaucoma, retina problems. >> reporter: online vision testing is not available in all states. the american kmookd me of ophthalmology helps reduce costs but needs to be evaluated over time. they say it may be appropriate only for adults 18 to 39 without severe prescriptions or symptoms of eye disease. thanks to medicine that didn't exist until now. and today can save your life. ♪