4.6 Article

Assessing the corneal sub-basal nerve plexus by in vivo confocal microscopy in patients with blepharoptosis

期刊

ANNALS OF MEDICINE
卷 54, 期 1, 页码 227-234

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/07853890.2021.2024246

关键词

Blepharoptosis; cornea; sub-basal nerve plexus; in vivo confocal microscopy; automated analysis; ACCmetrics

资金

  1. fund of Top Talent Support Program for young and middle-aged people of Wuxi Health Committee [HB2020030]
  2. Development Fund of Wuxi Science and Technology [WX18IIAN019]

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The study found that blepharoptosis had no significant impact on most corneal nerve parameters, except for potentially wider corneal nerve fiber width in patients with congenital blepharoptosis. The age of onset of blepharoptosis may affect corneal nerve fibers, highlighting the importance of timely surgical treatment for congenital blepharoptosis. Furthermore, caution should be taken in young blepharoptosis patients with sparse corneal nerves who are considering corneal surgeries or contact lens wear.
Background To assess in vivo confocal microscopy features of corneal sub-basal nerve plexus in patients with congenital or aponeurogenic blepharoptosis using a fully automated software (ACCMetrics). Patients and methods This prospective study included 33 patients with blepharoptosis and 17 normal controls. The corneal sub-basal nerve plexus was assessed using in vivo confocal microscopy, and the ocular surface status was evaluated by tear break-up times. Results The mean age of 33 patients with blepharoptosis and 17 normal controls were 38.77 +/- 22.81 years and 48.35 +/- 17.15 years, respectively. The mean duration of blepharoptosis was 16.42 +/- 15.60 years. In 13 patients with unilateral blepharoptosis, there was no significant difference between affected eyes and contralateral eyes (all ps > .05), except for wider corneal nerve fibre width (CNFW) in affected eyes (0.024 +/- 0.001 versus 0.023 +/- 0.001 mm/mm(2), p = .021). In 20 patients with bilateral blepharoptosis, there was no significant difference between the eyes. No significant difference was detected between 19 cases with congenital blepharoptosis and 14 cases with aponeurogenic blepharoptosis. When compared with normal controls, eyes with both unilateral and bilateral blepharoptosis had significantly wider CNFW. But from the point of aetiology, only eyes with congenital blepharoptosis presented with wider CNFW (p = .001), rather than the eyes with aponeurogenic blepharoptosis (p = .093). Besides, four young patients with congenital blepharoptosis revealed very sparse sub-basal nerve plexus. Conclusions These data suggested that corneal confocal microscopy demonstrated no significant changes in patients with blepharoptosis as compared with normal controls, except for relatively wider CNFW in congenital affected eyes. However, in some children and young adults with congenital blepharoptosis, the density of corneal sub-basal nerve plexus was evidently decreased, which needs to be cautioned when ones with congenital blepharoptosis want to take corneal surgeries or wear contact lens. Key messages When compared with normal controls, no significant effect was found in the influence of blepharoptosis on the most of corneal nerve parameters, except for corneal nerve fibre width (CNFW) in the group of congenital blepharoptosis. The age of onset of blepharoptosis may influence corneal nerve fibres, so timely surgical treatment of congenital blepharoptosis is not only conducive to the development of normal vision, but also beneficial to the reduction of corneal nerve lesions to some extent. We noted that some young blepharoptosis patients revealed sparse corneal nerve, which should be taken precaution when ones with congenital blepharoptosis who want to take corneal surgeries or wear contact lens.

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