Longitudinal changes in axial length in pseudophakic children

Area of Science:

• Ophthalmology
• Pediatric Ophthalmology
• Biomedical Engineering

Background:

• Cataract extraction in children requires careful consideration of axial length changes.
• Intraocular lens (IOL) implantation is a common procedure following pediatric cataract surgery.
• Understanding refractive development post-surgery is crucial for long-term visual outcomes.

Purpose of the Study:

• To evaluate axial length changes in children aged 3-9 years after cataract extraction and primary IOL implantation.
• To compare axial elongation between traumatic and developmental/congenital cataracts.
• To assess refractive shifts following the surgical intervention.

Main Methods:

• Retrospective review of 17 eyes in 15 children (mean age 6.4 years) who underwent primary IOL implantation.
• Analysis of initial and final axial length measurements and refractive errors.
• Average follow-up duration of 3.1 years.

Main Results:

• Overall mean axial length increase of 0.64 mm observed across all eyes.
• Mean myopic shift of -1.01 diopters (D) recorded.
• Eyes with traumatic cataracts showed significantly more axial elongation (0.97 mm) compared to developmental/congenital cataracts (-0.01 mm; P = .03).
• 94% of patients achieved a final visual acuity of 20/40 or better.

Conclusions:

• Pediatric eyes with traumatic cataracts exhibit greater axial elongation post-cataract extraction and IOL implantation than those with developmental/congenital cataracts.
• Axial elongation and subsequent myopic shift are significant considerations in pediatric cataract surgery.
• The findings highlight the importance of considering cataract etiology when predicting refractive outcomes in children.