Resolution of cyclic esotropia with 5-year follow-up after brief Fresnel prism treatment.

Cyclic esotropia is a rare form of strabismus that is characterized by a recurring esotropic deviation, usually with a 48-hour cycle. On esotropic days, the patient has a constant deviation with suppression, followed by a day with straight eyes and good binocular function. We report a case of cyclic esotropia in which the cycling resolved with 2 months of Fresnel prism for the amount of the distance deviation on her "straight" days.

Aniseikonia: A 21st Century Look.

: Aniseikonia, an appreciation of image size differences between the eyes, can produce symptoms in patients, ranging from headaches to loss of fusion. The purpose of this research was to take a 21st century look at aniseikonia. : Kellogg Eye Center patient records were evaluated for measurable aniseikonia in patients tested with the Aniseikonia Helper, a tablet-based application.

Testability Study of the Titmus V3 Test in Pre-school Children.

Significance: Vision screening can identify people who have vision problems requiring a comprehensive examination. When children are screened, the most prevalent serious problem is amblyopia secondary to uncorrected ametropia. Screening also identifies strabismus, which can lead to loss of binocularity.

Fresnel prism use among orthoptists.

Purpose: To better understand current uses of Fresnel prisms.

Methods: A seventeen-question survey was completed by members of the American Association of Certified Orthoptists (AACO).

Results: Surveys were emailed to 211 orthoptists with a 36% response rate (n = 76).