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terminology and guidelines for glaucoma ii - Kwaliteitskoepel

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2.2.4 - PRIMARY OPEN-ANGLE GLAUCOMA SUSPECT (POAG/HPG SUSPECT)<br />

See also Ch. Introduction <strong>and</strong> Ch. 2.2<br />

Etiology: Unknown<br />

Pathomechanism: Unknown<br />

Features:<br />

Visual field <strong>and</strong>/or optic disc <strong>and</strong>/or nerve fiber layer normal or suspicious, with at least one being suspicious<br />

Peak IOP > 21 mm Hg < 30 mm Hg without treatment (diurnal tension curve)<br />

Gonioscopy: open anterior chamber angle<br />

Risk factors to be considered:<br />

IOP difference > 4 mm Hg between the two eyes<br />

Peak IOP value<br />

Any other vascular risk factor <strong>for</strong> <strong>glaucoma</strong>tous optic neuropathy (See Ch. 2.2)<br />

POAG in fellow eye<br />

AION in fellow eye<br />

Note<br />

Pseudoexfoliation <strong>and</strong> pigment dispersion are risk factors <strong>for</strong> secondary open-angle <strong>glaucoma</strong>.<br />

High IOP is associated with, but not proven to be a causal factor of vein occlusion, especially in patients with high<br />

blood pressure, hypercholesterolemia or obesity.<br />

2.2.5 - PRIMARY OPEN-ANGLE GLAUCOMA/Normal-Pressure Glaucoma (POAG/NPG)<br />

See Ch. Introduction <strong>and</strong> Ch. 2.2<br />

Etiology: Unknown<br />

Pathomechanism: Unknown. Optineurin mutation has been found in families with NPG<br />

Features:<br />

Onset: from the 35th year onwards<br />

Signs <strong>and</strong> symptoms:<br />

Asymptomatic until field loss advanced<br />

Peak IOP < 22 mm Hg without treatment (diurnal tension curve)<br />

Optic nerve head damage typical of <strong>glaucoma</strong><br />

Disc hemorrhage<br />

Visual field defect typical of <strong>glaucoma</strong>; common paracentral defects<br />

Gonioscopy: open anterior chamber angle (exclude intermittent angle-closure; see Ch. 2.4.3)<br />

No history or signs of other eye disease or steroid use.<br />

Consider central corneal thickness if findings do not match (see Ch. 1.1)<br />

2.2.6 - POAG/Normal-Pressure Glaucoma Suspect (POAG/NPG-SUSPECT)<br />

Etiology: Unknown<br />

Pathomechanism: Unknown<br />

Features:<br />

Signs <strong>and</strong> symptoms:<br />

Visual field: normal or suspicious<br />

Optic disc <strong>and</strong>/or nerve fibre layer: findings not diagnostic of, but compatible with, the diagnosis of <strong>glaucoma</strong><br />

Peak IOP: < 22 mm Hg without treatment (diurnal tension curve or refeated measurements)<br />

Gonioscopy: open anterior chamber angle (exclude intermittent angle-closure see Ch. 2.4.3)<br />

Risk factors to be considered:<br />

IOP difference > 4 mm Hg between the two eyes<br />

Any other vascular risk factor <strong>for</strong> <strong>glaucoma</strong>tous optic neuropathy (See Ch. 2.2)<br />

NPG in fellow eye<br />

Consider corneal thickness if findings do not match (see Ch. 1.1)<br />

Ch. 2 - 7 EGS

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