Lifestyle And Progression Of Axial Segmental Biometric Lengths In Teenagers – A Portuguese Cohort From The Oporto Myopia Study
Published 2024 - 42nd Congress of the ESCRS
Reference: PO272 | Type: Free paper | DOI: 10.82333/0e4s-wc78
Authors: Joao Heitor Marques* 1 , Paulo Sousa 2 , Saul Pires 2 , Renato Ambrósio 3 , Pedro Meneres 1 , João Melo Beirão 1 , Pedro Manuel Baptista 1
1ULSSA,Porto,Portugal;ICBAS,Porto,Portugal, 2ULSSA,Porto,Portugal, 3Department of Cornea and Refractive Surgery, Instituto de Olhos Renato Ambrósio,Rio de Janeiro,Brazil;Federal University of São Paulo (UNIFESP),São Paulo,Brazil;Brazilian Study Group of Artificial Intelligence and Corneal Analysis - BrAIN,Rio de Janeiro,Brazil;Department of Opthalmology, Federal University of the State of Rio de Janeiro (UNIRIO),Rio de Janeiro,Brazil
Purpose
To describe lifestyle in a cohort of portuguese teenagers
To describe axial and segmental ocular biometric lengths in a cohort of portuguese teenagers and its progression along the follow-up. To correlate lifestyle data with axial and segmental ocular biometric lengths at the end of follow up and with its progression from the baseline.
Setting
Centro Hospitalar e Universitário do Porto, Porto, Portugal
Methods
This is a prospective cohort study including 126 eyes of 63 individuals. Data was collected from 2 timepoints, spaced by 2.2 (+-0.3) years.
Lifestyle data was collected with a questionnaire. Ocular biometric data from Axial length (AL) and segmental ocular biometric lengths (Central Corneal Thickness (CCT), Anterior Chamber Depth (ACD) and Lens Thickness (LT)) were assessed in both timepoints with IOL MASTER 700 (ZEISS). The variable Vitreous Cavity Length was Built [VCL=AL – (CCT + ACD + LT)]. Ratios between VCL and AL (R_VCL/AL) and ACD and AL (R_ACD/AL) were calculated. Deltas of progression were built for AL (Δ_AL), VCL (Δ_VCL), R_VCL/AL (Δ_R_VCL/AL) and R_ACD/AL (Δ_R_ACD/AL).
Results
Age at baseline of 14.2(+-2.6) years old.
Eyes from individuals with allergies history had smaller VCL at follow up (16.425 VS 16.812, p0.08), lower R_VCL/AL at follow up (0.695 VS 0.701, p0.03) and less Δ_AL (0.087 VS 0.15 mm, p0.032). Eyes with reported eye scratching habits had higher R_VCL/AL at follow up (0.700 VS 0.695, p0.08)
Weekly hours of outdoor activity were positively correlated with VCL at follow up (Pearson 0.175, p 0.05)
Daily hours spent on digital devices were positively correlated with Δ_R_VCL/AL (Pearson 0.177, p 0.048).
Conclusions
The present study highlights the importance of lifestyle history and habits, namely those related with ocular surface, outdoor activity and digital devices, in the biometric status of the eye and its change over time, in young individuals during adolescence. Furthermore, it highlights the concept of analyzing the axial growth of the young eye from a sum of segments perspective. These data are important to help design effective strategies for the prevention of the global myopia epidemic in the upcoming decades.