Impact of multifocal gas-permeable lens designs on short-term choroidal response, axial length, and retinal defocus profile.

Aim: To investigate the impact of multifocal gas permeable contact lens (MFGPCL) in various add power and distance/near area allocation on short-term changes of choroidal thickness (ChT), axial length (AL), and retinal defocus profile in young adults.

Methods: Seventeen young adults (2 males and 15 females; age 23.17±4.

Regional Distribution of Choroidal Thickness and Diurnal Variation in Choroidal Thickness and Axial Length in Young Adults.

Purpose: To examine the regional distribution of choroidal thickness (ChT) and the diurnal variation in ChT and axial length (AL) over a wide range of myopic refractive error.

Methods: ChT was measured in thirty-four healthy young adults (age mean ± SD: 25.2 ± 2.