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Light, near work, and ocular remodeling and during emmetropization and myopia development in children

Award Number: R01EY030193
ORGANIZATION: NATIONAL EYE INSTITUTE
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 07/01/2019
PERIOD OF PERFORMANCE END DATE: 02/28/2029

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Light, near work, and ocular remodeling and during emmetropization and myopia development in children - PROJECT SUMMARY/ABSTRACT Myopia, or nearsightedness, is an epidemic, with up to 90% of the population in some urbanized countries affected. Efforts have increased to understand the regulatory mechanisms underlying myopic eye growth due to the potentially blinding complications and socioeconomic burden associated with myopia. The long term goal of this work is to provide the scientific basis for effective environmental and behavioral treatment options to slow myopia onset and progression in children and to better understand structural changes in the myopic eye that render it more susceptible to ocular pathologies. Our central hypothesis is that reduced high intensity light exposure and increased time engaged in near work contribute to myopia onset and progression. We also hypothesize that the choroid, inner retinal vasculature, retinal morphology, and optic nerve head undergo significant remodeling during myopia development, which contribute to associated pathologies later in life. Refractive development is regulated by a complex interaction between genetic, environmental, and behavioral factors. Evidence suggests that outdoor time is protective against myopia onset, with some studies also showing that outdoor time decreases myopia progression. Numerous studies strongly support a role of near work in myopia onset and progression. However, there are conflicting findings, with some studies reporting no association. Inconsistent results are due to the variable and subjective nature by which light exposure and near work have traditionally been assessed. Based on gaps in the existing literature and our preliminary work, we will carry out the following studies to quantify the effects of environment and behavior on eye growth and the effects of eye growth on ocular structure in children; each aim will follow children for a two-year period. 1) Longitudinal objective and continuous measurement of personal light exposure over five one-week periods to determine its influence on refraction and axial length change; 2) Longitudinal objective measurement of near work over five one-week periods, paired with a visual activity questionnaire, to determine the influence of near viewing behaviors and electronic device use on refraction and axial length change; 3) Optical coherence tomography (OCT) imaging, OCT angiography (OCTA), and adaptive optics scanning laser ophthalmoscopy (AOSLO) imaging at one year intervals to investigate changes in foveal cone photoreceptor density, foveal pit morphology, foveal avascular zone characteristics, choroidal thickness, inner retinal vascular perfusion, and optic nerve head parameters in association with refraction and axial length change. The proposed studies are intended to fill a critical void in our understanding of the precise influence of environmental and behavioral factors on eye growth and myopia and how the eye remodels in myopia. This work will contribute to the development of evidence- based therapies, thereby reducing ocular complications and socioeconomic burden related to myopia.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $449,728 )
2025	2025	UNIVERSITY OF HOUSTON SYSTEM	4300 MARTIN LUTHER KING BLVD	HOUSTON	TX	77204	HARRIS	USA	Vision Research	001	6	2/21/2025	COMPETING CONTINUATION	$449,728
2025	2023	UNIVERSITY OF HOUSTON SYSTEM	4300 MARTIN LUTHER KING BLVD	HOUSTON	TX	77204	HARRIS	USA	Vision Research	000	5	2/14/2025	NON-COMPETING CONTINUATION	$0
														Subtotal = $449,728

Issue Date FY: 2023 ( Subtotal = $344,270 )
2023	2023	UNIVERSITY OF HOUSTON SYSTEM	4300 MARTIN LUTHER KING BLVD	HOUSTON	TX	77204	HARRIS	USA	Vision Research	000	5	6/2/2023	NON-COMPETING CONTINUATION	$344,270
														Subtotal = $344,270

Issue Date FY: 2022 ( Subtotal = $371,044 )
2022	2022	UNIVERSITY OF HOUSTON SYSTEM	4800 W CALHOUN ST STE 316	HOUSTON	TX	77004	HARRIS	USA	Vision Research	000	4	4/28/2022	NON-COMPETING CONTINUATION	$371,044
														Subtotal = $371,044

Issue Date FY: 2021 ( Subtotal = $371,277 )
2021	2021	UNIVERSITY OF HOUSTON SYSTEM	4800 W CALHOUN ST STE 316	HOUSTON	TX	77004	HARRIS	USA	Vision Research	000	3	6/15/2021	NON-COMPETING CONTINUATION	$371,277
														Subtotal = $371,277

Issue Date FY: 2020 ( Subtotal = $382,520 )
2020	2020	UNIVERSITY OF HOUSTON SYSTEM	4800 W CALHOUN ST STE 316	HOUSTON	TX	77004	HARRIS	USA	Vision Research	000	2	5/27/2020	NON-COMPETING CONTINUATION	$382,520
														Subtotal = $382,520

Issue Date FY: 2019 ( Subtotal = $344,510 )
2019	2019	UNIVERSITY OF HOUSTON SYSTEM	4800 W CALHOUN ST STE 316	HOUSTON	TX	77004	HARRIS	USA	Vision Research	000	1	6/20/2019	NEW	$344,510
														Subtotal = $344,510

Grand Total All Awards = $2,263,349

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Light, near work, and ocular remodeling and during emmetropization and myopia development in children

Award Number: R01EY030193

ORGANIZATION: NATIONAL EYE INSTITUTE

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

PERIOD OF PERFORMANCE START DATE: 07/01/2019

PERIOD OF PERFORMANCE END DATE: 02/28/2029

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