PURPOSE To assess the accuracy of the Plusoptix A09 photoscreener in detecting amblyopia risk factors in children and determine referral criteria when using Plusoptix A09 for a large-scale vision screening. METHODS Pediatric patients attending our eye clinic underwent a comprehensive ophthalmic examination that included photorefraction, orthoptic examination, anterior segment assessment, fund...

AIMS To study binocular function in patients with longstanding asymmetric keratoconus. METHODS In 20 adult patients with longstanding asymmetric keratoconus managed with a scleral contact lens a full clinical and orthoptic assessment was performed with and without the scleral contact lens in the poorer eye. RESULTS All 20 patients had a corrected acuity of at least 6/9 in their better eye. ...

It is shown that ovals admitting circles as orthoptic curves are precisely characterized by the property that every one of their points is the vertex of exactly one maximal-perimeter inscribed parallelogram. This generalizes an old property of ellipses, most recently revived by Connes and Zagier in the paper A Property of Parallelograms Inscribed in Ellipses. Let C be a centrally symmetric smoo...

BACKGROUND AND PURPOSE Orthoptic exercises are routinely prescribed to treat symptoms of convergence insufficiency (CI). The type and duration of treatment tends to vary among providers as until recently, few strong randomized control studies have addressed the efficacy of convergence insufficiency management. The aim of this paper is to address these studies and discuss their limitations. ME...

FOLLOWING the preliminary reports of Brinker and Katz (1963) and Binder, Engel, Ede, and Loon (1963) on the possible use of a red filter in the management of eccentric fixation, we tried this method of treatment in a series of eighteen cases, ten of which completed the investigation. Six of these were cases of eccentric fixation of the paramacular type, two of the parafoveal type, and two were ...

PURPOSE Screening programs to detect visual abnormalities in children vary among countries. The aim of this study is to describe experts' perception of best practice guidelines and competency framework for visual screening in children. METHODS A qualitative focus group technique was applied during the Portuguese national orthoptic congress to obtain the perception of an expert panel of 5 orth...

OBJECTIVE To evaluate the influence of strabismus surgery on quality of life (QoL) in Graves' orbitopathy (GO) patients. DESIGN Prospective study of case series. METHODS Consecutive GO-patients who were scheduled for their first strabismus surgery were included in the study. The patients completed the GO-QoL questionnaire within 3 months before the surgery and 2-4 months after the surgery. ...

When Policy Topic is covered Office-based vergence/accommodative therapy may be considered medically necessary for patients with symptomatic convergence insufficiency if, following a minimum of 12-weeks of home-based therapy (e.g., push-up exercises using an accommodative target; push-up exercises with additional base-out prisms; jump to near convergence exercises; stereogram convergence exerci...

ABNORMAL retinal correspondence is found to be present in a considerable number of cases of concomitant strabismus. Muller (1826) thought that the anomalous projection was due to a congenital malposition of the macula of the squinting eye. It was suggested by von Graefe (1855) that the anomalous projection occurred as a result of the squint. Parinaud (1899) postulated that normal binocular func...

Conclusion The PSCS provides care in the community and has released capacity at the University Hospital of North Staffordshire (UHNS). The orthoptic referral triage system directs patients appropriately to PSCS or UHNS appointments. The refractive prescribing guidelines help to maintain a standardised quality of care. Electronic referral management reduces administrative error. Referral pathway...