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04.05.2018 | Cornea

Heredity and in vivo confocal microscopy of punctiform and polychromatic pre-Descemet dystrophy

Zeitschrift:
Graefe's Archive for Clinical and Experimental Ophthalmology
Autoren:
María Angélica Henríquez Recine, Kelly Sonia Marquina Lima, Elena Vallespín García, Sixto García-Miñaur, José Manuel Benitez Del Castillo, Ana Boto de los Bueis

Abstract

Purpose

To describe and analyze the biomicroscopic features and in vivo confocal microscopy of the crystalline form of pre-Descemet corneal dystrophy (PDCD).

Methods

We examined two non-related families using biomicroscopy, in vivo confocal microscopy, and a genetic study using a gene panel test, looking for mutations in the PIKFYVE gene.

Results

A slit-lamp examination of the first family revealed polychromatic crystalline punctiform opacities distributed all over the stroma in 8 of 11 family members in three generations with an autosomal dominant inheritance. The second family showed in three of four members in two generations the same opacities located in the pre-Descemet region. It was also a hint for autosomal dominant inheritance. The in vivo confocal microscopy identified numerous rounded and hyperreflective stromal particles measuring 10–15 μm in diameter, with the highest density in the posterior stroma and with normal keratocytes. No systemic disease was diagnosed. No variants or mutations were identified in PIKFYVE gene.

Conclusions

Polychromatic deposits in patients with Punctiform and Polychromatic Pre-Descemet corneal dystrophy can be located not only in the deep stroma but also in the anterior and middle stroma. Our presentation reveals the possibility of considering this characteristic corneal disorder as a corneal dystrophy of its own and not as a subtype of pre-Descemet corneal dystrophy.

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Zusatzmaterial
Video 1.
First family proband in vivo confocal microscopy: In this sequence we can observe the stromal deposits from the anterior to the predescemetic stromal layers. The epithelium and endothelium were normal and Bowman’s membrane is not affected. (MP4 1074 kb)
Video 2. Second family proband in vivo confocal microscopy: In this sequence we can appreciate the stromal deposits only in the predescemetic layer. (MP4 3762 kb)
417_2018_3993_MOESM2_ESM.mp4
Literatur
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