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Retrobulbar hemodynamics and corneal surface temperature in glaucoma surgery

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Abstract

Aim The purpose of this study was to investigate the effects of glaucoma surgery on retrobulbar hemodynamics and corneal surface temperature (CST). Methods A total of 22 primary open-angle glaucoma eyes underwent deep sclerectomy, and 19 trabeculectomy. The follow-up was of 3 months. The peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistivity index (RI) were evaluated in the ophthalmic artery (OA), central retinal artery (CRA), and short posterior ciliary arteries (SPCAs) by color Doppler imaging (CDI). CST was measured using infrared thermography. Results At 3 months, EDV was increased in OA (P < 0.001 in deep sclerectomy, P = 0.005 in trabeculectomy), CRA (P = 0.044 and P < 0.001), and SPCAs (P = 0.011 and P = 0.003), and RI decreased in OA, CRA, and SPCAs (P < 0.001 in both groups). CST values were augmented (P < 0.001 in both groups). A negative correlation between the postoperative changes in RI-OA and CST was found (P = 0.023 and P = 0.032, respectively). Conclusions Deep sclerectomy and trabeculectomy seem to be equally effective in improving retrobulbar hemodynamics. Color Doppler imaging and infrared thermography might be useful to evaluate the vascular outcome of glaucoma surgery.

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Abbreviations

BCVA:

Best corrected visual acuity

CDI:

color Doppler imaging

CPSD:

corrected pattern standard deviation

CRA:

central retinal artery

CT:

corneal temperature

EDV:

end-diastolic velocity

IOP:

intraocular pressure

MD:

mean deviation

OA:

ophthalmic artery

ONH:

optic nerve head

OST:

ocular surface temperature

POAG:

primary open-angle glaucoma

PSV:

peak-systolic velocity

RI:

resistivity index

SD:

standard deviation

SPCAs:

short posterior ciliary arteries

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Acknowledgments

Special thanks to Gianluca Gervasi, Department of Mechanics and Industrial Technology, University of Florence, for his aid in thermographic analysis.

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Authors and Affiliations

  1. Eye Clinic, University of Florence, viale Morgagni, Florence, 85-50134, Italy

    Fernando Galassi, Barbara Giambene & Ugo Menchini

  2. Department of Mechanics and Industrial Technology, University of Florence, Florence, Italy

    Andrea Corvi & Giacomo Falaschi

Authors
  1. Fernando Galassi
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  2. Barbara Giambene
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  3. Andrea Corvi
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  4. Giacomo Falaschi
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  5. Ugo Menchini
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Correspondence to Barbara Giambene.

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Galassi, F., Giambene, B., Corvi, A. et al. Retrobulbar hemodynamics and corneal surface temperature in glaucoma surgery. Int Ophthalmol 28, 399–405 (2008). https://doi.org/10.1007/s10792-007-9160-8

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  • DOI: https://doi.org/10.1007/s10792-007-9160-8

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