# @2020glance on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/C_dlDE4PBaI
- **Gondola URL:** https://gondola.cc/posts/37443638-2020glance-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/b5f8466f34.jpg
- **Posted:** 2024-09-03T16:45:04.000+00:00
- **Account Owner:** Glance (@2020glance) — https://gondola.cc/2020glance

## Caption

In new research published in the British Journal of Ophthalmology, investigators analyzed the short-term effect of different intensities of sunlight exposure on blood-flow perfusion (BFP) after reading.

Give me some background first.
Previous research has found that increased intensity and duration of sunlight exposure may reduce the risk of developing myopia.

Additionally: Altered fundus blood flow is considered to play a role in the pathogenesis of myopia and serves as a predictive indicator for myopia development.

To back this up: Clinical studies have demonstrated that myopic patients often exhibit diminished choroidal and retinal BFP, contributing to scleral hypoxia and subsequent myopia progression.

Now, talk about the study.
Investigators conducted a parallel, randomized controlled trial (RCT) at the China-based Shanghai Eye Disease Prevention and Treatment Center from August to September 2022.

Participants selected were randomly assigned to either:

Low-illuminance (4k lux) group
N=40
High-illuminance (10k lux) group
N=41

Who was included in the study?
Out of 139 individuals assessed for eligibility, a total of 81 participants were included in the analysis with the following criteria:

Aged 7 to 15
A spherical equivalent refraction between -2.00 and +3.00 diopters

And how was it conducted?
Following 1 hour of indoor (with a luminance of 2k lux) reading (at a distance of 33 cm), participants received sunlight exposure at the intensity assigned to their respective group.

Exposure duration: 15 minutes

Learn more at the link in bio.
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## Tags

optometrist, vision, premed, optometrynews, cornea, nurse, retinopathy, ophthalmology, healthy, contactlenses, medstudent, contacts, womeninmedicine, glaucoma, scrublife, physiciansassistant, optometry, ophthalmologist, residency, dryeyes, surgeon, retina, medicine, keratoconus, eye, glasses, optometrystudent

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