title: The short-term effects of exercise on intraocular pressure, choroidal thickness and axial length.
abstract: OBJECTIVE
  To explore ocular changes in healthy people after exercise.
  
  
  METHODS
  Twenty five volunteers underwent exercise for 15 minutes on a treadmill. Measurements of choroidal thickness, intraocular pressure (IOP), ocular biometry, and blood pressure were taken before and after exercise. Enhanced Depth Imaging optical coherence tomography (EDI-OCT) was used to measure choroidal thickness at the fovea. Intraocular pressure (IOP) was measured by Goldmann applanation tonometry. Ocular biometric measures were collected using A scan ultrasound. Blood pressure was measured concurrently with the acquisition of the scans.
  
  
  RESULTS
  Twenty five volunteers (25 eyes) with a mean age of 25.44±3.25 years were measured. There was a significant increase in systolic and diastolic pressure after exercise (P<0.05). The IOP showed a significant decrease after exercise (P<0.05). However there was no significant difference in the mean choroidal thickness, ocular axial length, anterior chamber depth, lens thickness, or vitreous length before and after exercise measurements (P>0.05).
  
  
  CONCLUSIONS
  There was a significant decrease in IOP from exercise without a change in choroidal thickness and ocular biometric measures. IOP and choroidal thickness were not correlated, suggesting that the IOP decrease from exercise is not due to changes in choridal thickness.
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Hong
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, University of California San Francisco School of Medicine, San Francisco, California, United States of America.
authors.forename: Debbie S
authors.initials: DS
authors.lastname: Kuo
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Huaizhou
authors.initials: H
authors.lastname: Wang
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Yanjiao
authors.initials: Y
authors.lastname: Huo
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Diya
authors.initials: D
authors.lastname: Yang
authors.affiliation: Beijing Tongren Eye Center, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
authors.forename: Ningli
authors.initials: N
authors.lastname: Wang
mesh_terms: D000328:Adult; D058452:Axial Length, Eye / Q000033:anatomy & histology* / Q000502:physiology; D001699:Biometry; D001794:Blood Pressure; D002829:Choroid / Q000033:anatomy & histology* / Q000502:physiology; D015444:Exercise; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D055815:Young Adult