In this pilot study we analyse the pupil fluctuations of the right eye of two subjects during forty-five seconds while keeping constant the viewing distance and the room illumination. Measurements were taken with an infrared eye-tracker working at 250 Hz. The results were for subject A a median diameter of 2.913 mm with a maximum diameter of 3.313 mm and a minimum diameter of 2.66 mm, for subject B the median diameter was 4.39 mm with a maximum of 5.23 mm and a minimum of 3.26 mm. For both subjects the distribution of the pupil diameter did not follow a normal distribution, this was determined with the Lilliefors test, the p-values were 0.0251 for subject A and 0.001 for subject B. In conclusion, even in constant conditions of illumination and viewing distance the pupil cannot be considered to remain constant and its diameter varies not following a normal distribution.
Comments: 8 Pages.
[v1] 2017-11-27 09:00:14
Unique-IP document downloads: 17 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.