Influence of exercise on the structure of the anterior chamber of the eye

Abstract

PurposeTo measure changes in anterior chamber structure before and after exercise in healthy individuals using anterior segment optical coherence tomography (ASOCT).MethodsThirty‐two healthy young individuals performed jogging for 20 min. Eye blinking rate was recorded during rest and exercise. The anterior chamber angle (ACA), angle opening distance at 500 μm from the scleral spur (AOD500), trabecular‐iris space area at 500 μm from the scleral spur (TISA500), iris concavity (IC), iris concavity ratio (CR), iris thickness at 750 μm from the scleral spur (IT750), anterior chamber depth (ACD), anterior chamber width (ACW), pupil diameter (PD), intraocular pressure (IOP), blood pressure (BP) and heart rate (HR) were recorded before and after exercise. Anterior chamber angle (ACA), AOD500, TISA500, IC, IT750, ACD, ACW and PD were measured with ASOCT.ResultsCompared with rest, the blinking rate during exercise did not change significantly (13.04 ± 5.80 versus 13.52 ± 5.87 blinks/min, p = 0.645). The average IOP (15.4 ± 2.4 versus 12.4 ± 2.1 mmHg), ACA (35.96 ± 11.35 versus 40.25 ± 12.64 degrees), AOD500 (0.800 ± 0.348 versus 0.942 ± 0.387 mm), TISA500 (0.308 ± 0.155 versus 0.374 ± 0.193 mm2), IC (−0.078 ± 0.148 versus −0.153 ± 0.159 mm) and CR (−0.027 ± 0.050 versus −0.054 ± 0.056) changed significantly (all p < 0.001), while the average IT750 (0.463 ± 0.084 versus 0.465 ± 0.086 mm; p = 0.492), ACD (3.171 ± 0.229 versus 3.175 ± 0.238 mm; p = 0.543) and ACW (11.768 ± 0.377 versus 11.755 ± 0.378 mm; p = 0.122) showed no significant change after exercise.ConclusionThe blinking rate did not change significantly during exercise, while ACA, AOD500 and TISA500 increased after exercise. Exercise also induced or increased IC. These changes in anterior chamber structure were only associated with exercise, but not with the postexercise change in PD or IOP.

Assessment of Choroidal Vascularity and Choriocapillaris Blood Perfusion After Accommodation in Myopia, Emmetropia, and Hyperopia Groups Among Children

“…One myopic eye and one hyperopic eye were excluded from further image and data analysis due to the low image quality. All subjects were requested to abstain from caffeine for 3 days and from any food or beverage for at least 30 min before study participation ( Li et al, 2018 ).…”

Retinal Microvascular Vessel Density Differences between Adult Athletes and Nonathletes

“…The effects of sports activities on glaucoma, axial length, ocular blood flow, and myopia, as well as systemic diseases, such as type 2 diabetes mellitus and hypertension, have also been investigated 1,2 . Studies have reported that physical activity has an effect on ocular parameters, such as pupil size, anterior chamber angle, and neurovascular retinal features 3–5 . Retina and optic disc structures are likely to be positively affected in athletes 6 …”

“…1,2 Studies have reported that physical activity has an effect on ocular parameters, such as pupil size, anterior chamber angle, and neurovascular retinal features. [3][4][5] Retina and optic disc structures are likely to be positively affected in athletes. 6 Optical coherence tomography angiography is a noninvasive method that has been widely used in clinics in recent years.…”

Relationship Between Autonomic Nervous System Activity and Axial Length in Children

“…Subjects with best corrected visual acuity less than 20/20, a history of ocular disease other than refractive error, a history of ocular trauma, a history of ocular laser or surgery, a history of use of any other modalities other than single-vision spectacles for myopia control, including rigid contact lenses, multifocal soft contact lenses, orthokeratology lenses and atropine, or a history of systemic disease were excluded [ 40 ]. Furthermore, subjects were instructed to take no medicines/food affecting the circulatory system 1 month before their participation, and to receive no caffeine for at least 24 hours before the study [ 41 ].…”