HAL lenses for children with strabismusSVL for children with strabismus
HAL lenses for children with strabismus: It has been shown that peripheral segmented defocus spectacles can slow myopia progression. The Essilor® Stellest™ lens has been designed with an exclusive and pioneering technology called HALT (Highly Aspherical Lenslet Target). The HALT technology is made of a constellation of 1,021 invisible lenslets. This constellation creates a signal in front of the retina that acts as a shield against eye elongation and, therefore, myopia progression. Studies suggest that children are tolerable against these glasses, and the lenses can slow down myopia progression by 67% on average, compared to single vision lenses, when worn 12 hours a day. It can be considered as one of the best available myopia control spectacle lens designs, being superior to progressive addition and bifocal lenses.
SVL for children with strabismus: SVL for children with strabismus
Study summary
Assess the effect and changes of eye misalignment (strabismus) with myopia control glasses Assess the efficacy of myopia control glasses on childhood myopia progression in children with strabismus due to the uncertainty clinicians face when prescribing myopia control glasses to these strabismic children
Eligibility
Sex
ALL
Min age
5 Years
Max age
12 Years
Healthy volunteers
No
Inclusion Criteria:
Age 5-12 years old Myopia of between -1D and -6D in at least 1 eye Progression of at least 0.5D within the last year Astigmatism less than 2.5D Exotropia Exophoria: horizontal deviation \<40PD Esotropia (good control), Esophoria: horizontal deviation \<40PD Any vertical strabismus: Vertical deviation \<10 PD Intermittent exotropia (good, moderate, poor) Horizontal deviation ≥15 PD, vertical deviation ≤5 PD (?)
Exclusion Criteria:
VA poorer than logMAR 0.2 (6/9.5) in either eye Any other ocular condition (e.g. lens opacity, glaucoma) other than myopia, strabismus or nystagmus) Any medical/neurological condition which would interfere with subjects ability to co-operate with tests and attend follow-up appointments.
Plans of surgery for strabismus or nystagmus in the next year Constant XT). Past use of any other from of myopia control treatment (eg. atropine or myopia control glasses or contact lenses) within the last year.
Primary outcome measure(s)
To assess the efficacy of HAL lenses in childhood myopia control in children with strabismus and nystagmus — 2 years a. Efficacy in each eye - i. Primary outcome: change in AL in first vs second 6m ii. Secondary outcome: change in cycloplegic SE \& OCT choroidal thickness b. Alternative analysis: Difference between preferred/non-preferred eye, better-worse squint (size and control at baseline and 6m).
Trial sites (1)
Facility
City
Region
Status
Singapore National Eye Centre
Singapore
Singapore
More Singapore National Eye Centre trials in Singapore
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
We use cookies to analyse site traffic and improve your experience. With your consent, we may also use cookies for advertising. You can change your choice at any time.