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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

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Published on: March 29, 2022

Binocular function in pseudophakic children.

Malcolm R Ing¹

¹John A. Burns School of Medicine, University of Hawaii, Honolulu.

Transactions of the American Ophthalmological Society

|February 4, 2010

Summary

Binocular vision in children with bilateral pseudophakia (intraocular lens implants) shows good motor alignment and fusion. However, fine stereoscopic acuity is uncommon despite successful cataract surgery.

Area of Science:

Ophthalmology
Pediatric Ophthalmology
Binocular Vision Research

Background:

Limited data exists on binocular vision outcomes in children with bilateral pseudophakia.
Cataract removal in childhood often necessitates intraocular lens (IOL) implantation.

Purpose of the Study:

To evaluate visual and binocular function in children who underwent primary intraocular lens implantation after childhood cataract removal.
To report on the long-term outcomes of binocular vision in this patient population.

Main Methods:

Monocular and binocular vision tests were conducted on 21 pseudophakic children across 4 medical centers.
Standardized equipment was used for sensory testing of binocularity.
Patient histories were abstracted from clinical records; patients had a minimum 5-year follow-up.

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Main Results:

The mean age at first surgery was 6 years 4 months, with a mean follow-up of 10 years 4 months.
Most patients (19/21) achieved motor alignment within 8 prism diopters of orthotropia at near.
Fusion and some stereopsis were present in 15 patients, but only 4 demonstrated fine stereoacuity (≤60 arc seconds).

Conclusions:

While satisfactory motor alignment and fusion are common in pseudophakic children, the development of fine stereoacuity is infrequent.
Best-corrected visual acuity quality appears to be a differentiating factor between patients with fine versus gross stereoacuity.