Guangke Lenses in Congenital Cataract

Children with congenital cataract who have undergone surgery will be fitted with individually customized bifocal + defocus spectacles. Refraction and axial length will be monitored at regular intervals to assess the effect of the intervention on myopic progression.

Inclusion criteria

Aged 4 to 12 years (inclusive) at the time of enrollment. Diagnosed with bilateral congenital cataracts. Has undergone bilateral cataract extraction with intraocular lens (IOL) implantation.

Time since cataract surgery is between 1 to 6 months (inclusive) at the time of enrollment.

Able to undergo regular ophthalmic examinations (including refraction, axial length measurement, and intraocular pressure assessment).

Parent(s) or legal guardian(s) are willing and able to provide written informed consent.

Exclusion criteria

Presence of any systemic disease (e.g., metabolic disorders, autoimmune diseases, genetic syndromes, etc.).

Presence of any ocular disease other than congenital cataracts (e.g., glaucoma, uveitis, retinal disorders, corneal diseases, strabismus, amblyopia, etc.).

Previous or current use of myopia control treatments, including but not limited to atropine eye drops, orthokeratology (Ortho-K) lenses, or other myopia control spectacle lenses.

History of ocular trauma or intraocular surgery other than cataract extraction and IOL implantation.

Known allergy or hypersensitivity to any materials or components used in the study lenses.

Inability to comply with the study protocol or complete scheduled follow-up visits.

Participation in another interventional clinical trial within the past 30 days.