Modified bell retinoscopy: measuring accommodative lag in children.

ABSTRACT:

Purpose

To describe a modified bell retinoscopy (MBR) method for quantifying accommodative lag in children and to assess its repeatability and comparability with other techniques.

Methods

In MBR, the target is advanced toward the patient until the retinoscopic reflex is neutralized. A "standardized 40-cm target estimate" of lag was derived for each child using data from three retinoscope distances. Within-visit repeatability was assessed in normal children 5 to 23 months of age, a heterogeneous group of clinic patients, and a group of children with Down syndrome. Clinic patients were tested on separate days for between-visit repeatability and, also, with Nott retinoscopy (NR) and the monocular estimate method (MEM) on day 2.

Results

MBR correlated with NR (r = 0.84) a

SUBMITTER: Tarczy-Hornoch K 

PROVIDER: S-EPMC2806242 | biostudies-literature | 2009 Dec

REPOSITORIES: biostudies-literature