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Abstract #84819 Published in IGR 21-1

Relationship between optic disc hemorrhage and corneal hysteresis

Radcliffe NM; Tracer N; De Moraes CGV; Tello C; Liebmann JM; Ritch R
Canadian Journal of Ophthalmology 2019; 0:

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OBJECTIVE: To determine the relationship between optic disc hemorrhage (DH) and corneal hysteresis (CH). METHODS: Consecutive patients with prior or current photographic evidence of unilateral DH who had undergone CH measurement with the Ocular Response Analyzer (ORA; Reichert, Buffalo, NY) were enrolled. Eyes with a history of corneal disease, refractive surgery, or bilateral DH were excluded. Central corneal thickness (CCT), visual field data, 5 consecutive previous intraocular pressures (IOPs), and maximum documented peak IOP were obtained by chart review. Vertical cup-to-disc ratio (VCDR), the presence of neuroretinal rim notching, number of clock hours of beta zone parapapillary atrophy (ßPPA), and eye with greater ßPPA width were determined from photographs by 2 masked expert examiners. RESULTS: We identified and analyzed 49 patients with photographically documented unilateral DH. Compared to fellow non-DH eyes, eyes with DH had lower CH (8.7 ± 1.9 vs 9.2 ± 1.7; p = 0.002), higher IOP (15.6 ± 3.6 vs 14.3 ± 4.1; p = 0.017), and greater VCDR (0.79 ± 0.13 vs 0.68 ± 0.23; p < 0.001), but were similar with respect to CCT, ßPPA extent, rim notching, peak IOP, and visual field damage (all p > 0.05). Using multivariate conditional logistic regression analysis, only CH (p = 0.012) and VCDR (p = 0.004) predicted the laterality of the DH. CONCLUSIONS: Lower CH and greater VCDR are independently associated with DH. This suggests that CH may be a structural biomarker for an abnormality of the optic nerve complex that may be associated with progressive glaucoma. Eyes in which DH were detected had lower CH.

Mt Sinai School of Medicine, New York, NY. Electronic address: drradcliffe@gmail.com.

Full article

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Classification:

2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
9.4.10 Glaucomas associated with hemorrhage (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders)
2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)

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