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Apparatus and method for determination of tear osmolarity
专利权人:
Thomas E. Ryan
发明人:
Thomas E. Ryan,George S. Baggs,Timothy Levindofske
申请号:
US13128260
公开号:
US08885156B2
申请日:
2010.08.24
申请国别(地区):
US
年份:
2014
代理人:
摘要:
An apparatus comprises a spectrophotometer system configured to measure light absorbance by a tear sample, a refractometer system configured to measure refractive index of the tear sample, and an evaluation unit programmed to calculate an osmolarity of the tear sample based on the measured absorbance and refractive index and stored calibration curves. The spectrophotometer and refractometer systems may share a common prism contacted by the tear sample during measurement. The evaluation unit may be programmed to carry out steps of a method for determining osmolarity of the tear sample in accordance with the invention. The osmolarity of the tear sample may be used as an indicator in diagnosing dry eye.
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