Relation between tear breakup time and spontaneous blink rate.

Blinking plays an important role in maintaining corneal integrity by spreading of the tear film. Although there are studies reporting on blink rate and tear stability, a consensus has not been reached. Therefore, the blink rate and tear breakup time (TBUT) test were performed in 159 healthy young females. The mean TBUT and blink rate values observed were 18.9 seconds and 18.6 blinks/min, respectively. A significant correlation (r = 0.74, p < 0.05) between TBUT and blink rate was found. These results demonstrate that blink rate may be dependent on TBUT, at least among subjects with TBUT less than 19 seconds. Thus, blink rate may depend not only on cortical stimuli but also on the stability of the tear film.

[1]  L. Carney,et al.  THE NATURE OF NORMAL BLINKING PATTERNS , 1982, Acta ophthalmologica.

[2]  J. Prause,et al.  Relation between blink frequency and break‐up time? , 1987, Acta ophthalmologica.

[3]  M. Holland,et al.  Blinking and Mental Load , 1972, Psychological reports.

[4]  F. Holly,et al.  Formation and rupture of the tear film. , 1973, Experimental eye research.

[5]  K. M. Michels,et al.  Muscular tension and the human blink rate. , 1957, Journal of experimental psychology.

[6]  J. Stern,et al.  The endogenous eyeblink. , 1984, Psychophysiology.

[7]  L C Walrath,et al.  Blink activity in a discrimination task as a function of stimulus modality and schedule of presentation. , 1985, Psychophysiology.

[8]  M. Al-abdulmunem.  Tear film break-up time in normal Saudi Arabian subjects , 1997 .

[9]  T. Kuwabara,et al.  Dry eye secondary to mucus deficiency. , 1971, Transactions - American Academy of Ophthalmology and Otolaryngology. American Academy of Ophthalmology and Otolaryngology.

[10]  I H Leopold,et al.  Interpretation of tear film breakup. , 1977, Archives of ophthalmology.

[11]  M. Yap.  Tear break‐up time is related to blink frequency , 1991, Acta ophthalmologica.

[12]  R. Farris,et al.  OCULAR SURFACE DRYING AND TEAR FILM OSMOLARITY IN THYROID EYE DISEASE , 1983, Acta ophthalmologica.

[13]  Ross M. Henderson,et al.  Effect of Visual Display Unit Use on Blink Rate and Tear Stability , 1991, Optometry and vision science : official publication of the American Academy of Optometry.

[14]  Tiffany Jm.  The role of meibomian secretion in the tears. , 1985 .

[15]  M Collins,et al.  Blinking and corneal sensitivity , 1989, Acta ophthalmologica.

[16]  J. Ong,et al.  VARIATION IN BLINK RATE ASSOCIATED WITH CONTACT LENS WEAR AND TASK DIFFICULTY* , 1971, American journal of optometry and archives of American Academy of Optometry.