Rigid gas permeable contact lens correction for young children with special refractive errors

Area of Science:

• Ophthalmology
• Pediatric Optometry
• Visual Science

Background:

• Special refractive errors in young children often pose challenges for spectacle correction.
• Rigid gas permeable (RGP) contact lenses offer a viable alternative for managing these complex visual conditions.
• Early intervention with RGP lenses supports crucial visual development in children under six.

Purpose of the Study:

• To evaluate the visual outcomes of young children (under 6 years) with special refractive errors treated with RGP contact lenses.
• To assess the impact of RGP lens wear on best-corrected visual acuity (BCVA) and binocular function.
• To compare outcomes based on the type of refractive error and the presence of coexisting ocular conditions.

Main Methods:

• A retrospective study of 50 young children fitted with RGP lenses.
• Inclusion criteria: ultra-high hyperopia, myopia (≤-9.00D), high astigmatism (≥2.00D), high anisometropia (≥3.00D), with or without ocular lesions.
• Analysis of BCVA changes and binocular function (Worth 4-dot test, stereoacuity) before and after RGP wear (≥6 months).

Main Results:

• Significant BCVA improvement from 1.10 to 0.30 logMAR (p < 0.001) after RGP wear.
• 56% of children achieved BCVA of 6/12 or better; 17 demonstrated good binocular function.
• Highest rates of good binocular function were observed in ultra-high myopia (50%), high astigmatism (67%), and pure high anisometropia (50%).

Conclusions:

• RGP contact lenses are effective in significantly improving BCVA for young children with special refractive errors.
• Children with refractive errors alone showed the best outcomes with RGP lens wear.
• While RGP lenses provided some visual improvement in children with ocular lesions, binocular function remained limited in these cases.