Table 1.

Comparison of the efficacy of optical intervention methods for controlling myopia progression

Type	Design	Effect (slowing down the progression of myopia)	Axial growth reduction	Others
PALs	Progressive multifocal design	Decreased progression of myopia	-	No significant difference compared to SVL
DIMS	Central vision correction	52%	62%	Long-term effects are stable
SAL	Non-spherical lens design	Decreased progression of myopia	-	Safety requires further verification
HAL	Non-spherical lens design	41%	64%	Efficacy superior to SAL, safety requires further verification

PAL: Progressive Addition Spectacle lenses; DIMS: Defocus Incorporated Multiple Segments; SAL: Slightly Aspherical Lenslets; HAL: Highly Aspherical Lenslets.