Refraction in Children: A Comparison Between "Naive" Refraction to the Plusoptix A12 Portable Auto-Refractometer and Refraction at the Fixed Auto-Refractometer in Cycloplegia: About 52 Cases
Said Iferkhass,
Fatine Elalami,
Nihad Elhalouat,
Anas Bouassal,
Aziz Elouafi,
Abdelkader Laktaoui
Issue:
Volume 3, Issue 4, December 2018
Pages:
47-54
Received:
25 October 2018
Accepted:
10 November 2018
Published:
24 December 2018
DOI:
10.11648/j.ijovs.20180304.11
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Abstract: The aim of our work is to compare the values obtained by the last generation portable auto-refractometer PlusoptixA12 without dilation to those provided by an automatic refractometer with cycloplegia: Canon (RK-F2), in children, in order to have an idea about its strengths and limitations. Our work is a Cross-sectional study conducted from June to November 2016, about 52 children (104 eyes), aged from 3 to 16 years. Each child had a measure of refraction with the Plusoptix (without cycloplegy). After that, three instillations of cyclopentolate hydrochloride were carried out (T0, T5, and T10 min). We retake the refraction after 45 minutes using a fixed auto-refractometer. The average spherical equivalent was 1.46 ± 1.10 for refraction with Plusoptix versus 1.94 ± 1.40 for cycloplegic auto-refraction with a statistically significant difference (average difference -0.48D ± 1.06 (P <0.001). The difference between the average spherical refraction was -0.42 ± 1.03; P <0.001). In the hyperopic group, the average difference between the two refractive methods was -0.61 ± 1.03 compared to 0.23 ± 0.59 for myopic patients. For cylinders, the difference of the average power between the two devices was -0.14 ± 0.38 (P <0.001). There was no statistical significance between the two instruments for the cylindrical axis (p: 0.087). In the light of results obtained, the Plusoptix can be used as an interesting method of screening for ametropia. But it is not a precise way for studying refraction in strabic and amblyopic population. Its results are more reliable for the myopic and astigmatic subgroups than hyperopic ones.
Abstract: The aim of our work is to compare the values obtained by the last generation portable auto-refractometer PlusoptixA12 without dilation to those provided by an automatic refractometer with cycloplegia: Canon (RK-F2), in children, in order to have an idea about its strengths and limitations. Our work is a Cross-sectional study conducted from June to ...
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New Possible Clinical Variant of Syndrome Associating, Posterior Microphthalmos, Retinitis Pigmentosa, Foveoschisis, and Optic Disc Drusen: Report Case and Review of the Literature
Said Iferkhass,
Nihad Elhalouat,
Hatim Boui,
Anas Bouassel,
Abdalkader Laktaoui
Issue:
Volume 3, Issue 4, December 2018
Pages:
55-59
Received:
3 November 2018
Accepted:
15 November 2018
Published:
24 December 2018
DOI:
10.11648/j.ijovs.20180304.12
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Abstract: To report a possible new clinical variant of the syndrome: posterior microphthalmia - retinitis pigmentosa – retinoschesis and papillary drusen and review the literature for this clinical entity. This is a 9 years old child without particular pathological story. His parents had had consanguineous marriage. His best visual acuity was improved to 3/10 with +16.00 SD (diopter spherical) OD (right eye) and 2/10 OS (left eye) with +17.00 SD. Anterior segment examination was normal. On the dilated fundus, we found a crowded optic disc associated to a bilateral maculopathy with white spots at the retinal periphery in the both eyes. Therefore we realized: Ultrasound imaging, Fluorescent angiography, Optical coherence tomography, and visual evoked potential with electroretinography. A and B scan ultrasonography revealed a posterior microphtalmia. Autofluorescence images and fluorescent angiography showed peripapillary atrophy with drusen. Optical coherence tomography (OCT) analysis of the macula at the vertical scan line revealed retinoschesis and prominent retinal fold in the papillomacular region. An OCT section across a retinal white spot shows a hyper-reflective deposit in the subretinal space, pushing the line of the photoreceptors. The electroretinogram showed a very marked decrease in rod response and cone hypovoltage in favor to retinal dystrophy compatible with retinitis pigmentosa. This case shows a new clinical variant of the posterior microphthalmia syndrome - retinitis pigmentosa, papillary drusen and retinoschisis described only once in the literature characterized by the presence of retinal white spots. In this clinical situation, the contribution of electroretinigraphy in diagnosis is crucial. From this clinical description other studies may be realized to discover the new gene mutations related to this entity.
Abstract: To report a possible new clinical variant of the syndrome: posterior microphthalmia - retinitis pigmentosa – retinoschesis and papillary drusen and review the literature for this clinical entity. This is a 9 years old child without particular pathological story. His parents had had consanguineous marriage. His best visual acuity was improved to 3/1...
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