Hübsch S., Gräf M.

Department of Ophthalmology, Friedrichstr. 18, D-35392 Gießen

Introduction: The Sure Sight™ autorefractometer is comfortable to measure the refraction of very young children, because of the relative large working distance of 35 cm. We compared the results of Sure Sight™ autorefractometer without cycloplegia with the objective refraction in cycloplegia.
Patients and methods: The refraction of 166 patients, aged 3 month to 63 years (median 5 years), was measured by the Sure Sight™ autorefractometer without cycloplegia. Cycloplegic refraction was determined with the Topcon autorefractometer RM-A6000 or, if this was not possible, by retinoscopy in cycloplegia.
Results: Of the 166 patients, 78 had a spheric component of ametropia > 3 dpt. 46 patients had a cylindric ametropia > 1 dpt. The sensitivity of the Sure Sight™ was 26.9% for spheric ametropia > 3 dpt, 76.1% for cylindric ametropia > 1 dpt and 54.2% for anisometropia of the spheric component > 1 dpt with a specificity of 89.9%, 86.7% and 66.4%. Of the 65 children younger than 4 years of age, 27 had at least one of the mentioned criteria in cycloplegia. Of these 27 children, 24 were identified by the results of Sure Sight™ (sensitivity 88.9%). One child was not and 2 children refused the exam. Of the remaining 38 children, only 15 had unsuspicious findings with the Sure Sight™ (specificity 39.5%) and 4 children refused the exam. In 19 patients (50%) the result of the Sure Sight™ was false positive regarding the above criteria.
Conclusion: The Sure Sight™ autorefractometer can already be used in infants. The effectivity of the Sure Sight™ autorefractometry without cycloplegia as a screening method for ametropia is limited.

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