Correlation between radial peripapillary vascular density and reduced central corneal thickness in glaucoma suspect patients.

BACKGROUND: Optical coherence tomography (OCT) angiography (OCTA) provides a quantitative assessment of the microcirculation of the retina and choroid. It may precede the retinal nerve layer (RNFL) and optic disc head defects. Retinal nerve fiber layer defects and reduced central corneal thickness (CCT) are important parameters in the assessment of a glaucoma suspect patients. The aim of this study is to investigate any possible relationship between the reduced central corneal thickness and the radial peripapillary capillary (RPC) density defect in glaucoma suspect. METHODS: In this cross sectional study, 92 eyes were incorporated. Peripapillary OCT angiography (4.5 mm) and Anterior segment OCT for corneal pachymetry were done. C/D Ratio, thickness of nerve fiber layer, the blood flow indices and central corneal thickness also were evaluated. RESULTS: In eyes of glaucoma suspect patients; a significant positive correlation between CCT and total RPC density was detected (r = 0.38, P < 0.001). A strong positive correlation was also found between total RPC and peripapillary RNFL thickness (r = 0.55, P < 0.001). CONCLUSION: Reduced central corneal thickness and peripapillary capillary density are two screening parameters for glaucoma suspect patients. The radial peripapillary capillary density is a valid diagnostic tool for glaucoma.

The Combined Use of Silicone and Green Braided Polyester Suture (Ethibond) versus Silicone or Ethibond Alone for Frontalis Suspension Surgery in Children.

PURPOSE: This study aimed to report the outcomes of correcting severe congenital blepharoptosis by frontalis suspension using combined silicone tube and 2-0 green braided polyester suture (Ethibond), and to compare the results with those of silicone rod alone and Ethibond suture alone. PATIENTS AND METHODS: The medical records of patients below 16 years who underwent frontalis suspension were retrospectively reviewed. Three groups of patients were identified; group I (16 patients: 22 eyelids) had frontalis suspension surgery using silicone suspension set, group II (18 patients: 25 eyelids) underwent the surgery using Ethibond suture, and group III (15 patients: 23 eyelids) was operated on using combined silicone and Ethibond suture. The primary outcome measures were postoperative marginal reflex distance-1 (MRD-1) and postoperative symmetry, and the secondary outcome measures were the occurrence of complications; mainly recurrence and wound-related complications. The follow-up data were collected after 1 week, 1 month, 6 months, 12 months and every 6 months thereafter. RESULTS: The follow-up period ranged from 18 to 36 months. By the last follow-up visit, 13 eyelids in silicone group (59%), 11 eyelids in the Ethibond group (44%), and 13 eyelids in the double sling group (57%) achieved good surgical correction with MRD1 ≥3mm; these differences were not statistically significant. The difference in symmetry among the three groups was not significant. The highest rates of recurrence (44%) and wound-related problems (8%) were encountered in the Ethibond group, while the silicone group had no cases of wound-related problems. The lowest recurrence rate (26.1%) was in the double sling group but those differences were not significant. CONCLUSION: Combined use of silicone and Ethibond suture in frontalis suspension surgery could offer lower recurrence rate and good final surgical outcome when compared to silicone rod or Ethibond suture alone.

Assessment of peripapillary vessel density in acute non-arteritic anterior ischemic optic neuropathy.

PURPOSE: To assess the peripapillary perfusion in eyes with acute non-arteritic anterior ischemic optic neuropathy (NAION) using optical coherence tomography angiography (OCTA). METHODS: Twenty-five patients with unilateral acute NAION were included in this observational cross-sectional study. They were divided into two groups: group I (25 eyes) included eyes with acute NAION, and group II (25 eyes) included fellow normal eyes. Diagnosis of NAION was based on clinical examination and fluorescein angiography. OCTA (AngioVue, Optovue) was used to evaluate the optic nerve head perfusion and measure the peripapillary vessel density in all eyes included in the study. RESULTS: Fourteen male and 11 female patients with a mean age of 60.2 ± 3.5 years were included in this study. The mean duration of presentation was 4.3 ± 0.6 days. Mean BCVA was 0.13 ± 0.06 and 0.69 ± 0.18 in eyes with NAION and normal eyes, respectively (p < 0.001). The peripapillary vessel was significantly decreased in all eyes with NAION compared with normal ones (p < 0.001). Two morphological changes were noted in eyes with NAION: vascular dropout related to area of disc edema in 25 eyes (100% of eyes) and vascular dilatation with tortuosity in 17 eyes (68%). CONCLUSION: Eyes with NAION have decreased peripapillary vessel density with peripapillary vascular dilatation and tortuosity as assessed by OCTA.