K Reda | PubMed Health

PubMed2005

[Diagnostic laser in glaucoma: scanning laser polarimetry (GDx VCC) and confocal scanning laser tomography (HRT)].

Automated structural measurements of retinal nerve fibers and optic nerve head are possible with new lasers providing objective and reproductible data for analysis. Scanning laser polarimetry (GDx VCC), based on retardation of polarized light, assesses peripapillary nerve fiber layer thickness. Confocal scanning laser tomography yields precise topographic maps of the optic disc and peripapillary retina. The advantages, applications for glaucoma detection, both in a screening setting as well as for monitoring progression, limitations and pitfalls need to be well known and results should be analyzed with clinical data.

Disease Progression↗

PubMed2005

[Practical assessment. Ocular hypertension].

In cases of high intraocular pressure, the patient's hypertension must first be confirmed and its characteristics delineated with a diurnal IOP curve or at least several different measures. Central corneal thickness should be measured, since a thin cornea is a risk factor of progression toward glaucomatous neuropathy. Later, the optic nerve head and retinal nerve fibers should be tested (HRT, GDx, and OCT), to determine whether the ocular hypertension is associated with other findings, and visual field analysis should be carried out (standard automated perimetry, blue-yellow perimetry, FDT), completed by a search for associated risk factors. Therapeutic decisions will be based on this workup, keeping in mind that in the majority of cases, monitoring and information are sufficient but necessary; treatment should, however, be initiated in cases of ocular hypertension with a high risk of progression.

Humans↗