Fasting significantly reduces the amount of tears produced by the eye and increases the osmolarity of the tears, according to new research.
Fasting significantly reduces the amount of tears produced by the eye and increases the osmolarity of the tears, according to new research published in Eye & Contact Lens: Science & Clinical Practice. Fasting does not deteriorate the parameters of corneal topography or ocular aberrations in people who are healthy, however.
The study authors conducted a prospective controlled study of 29 eyes in 29 healthy men (mean age, 27.8 ± 5.9 years; range, 20 to 47 years). All of the men underwent corneal topography via a placido disc corneal topography and aberrometry device (OPD-Scan II, Nidek) before their ophthalmic examinations. Researchers used an osmometer (OcuSense, Tear Lab) to measure tear osmolarity. They also evaluated ocular surface disease index (OSDI) scores, tear break-up time (BUT), Schirmer I test and lissamine green staining.
The investigators took measurements between 4 pm and 5 pm before and during Ramadan and compared them using paired sample t test, considering a P value of less than 0.05 as statistically significant.
The researchers found:
To read an abstract of the study, click here.