Laser Iridotomy (Laser Peripheral Iridotomy)
Laser iridotomy, also known as laser peripheral iridotomy (LPI), is a non-invasive, outpatient laser procedure that creates a microscopic opening in the peripheral iris. It is the primary first-line intervention to relieve pupillary block, equalize pressure between the anterior and posterior chambers of the eye, and widen the drainage angle in primary angle-closure disease. It is performed both as an emergency treatment for acute angle-closure glaucoma and as a preventative measure for patients with anatomically occludable narrow angles.
Laser Iridotomy (Laser Peripheral Iridotomy)
Laser iridotomy, also known as laser peripheral iridotomy (LPI), is a non-invasive, outpatient laser procedure that creates a microscopic opening in the peripheral iris. It is the primary first-line intervention to relieve pupillary block, equalize pressure between the anterior and posterior chambers of the eye, and widen the drainage angle in primary angle-closure disease. It is performed both as an emergency treatment for acute angle-closure glaucoma and as a preventative measure for patients with anatomically occludable narrow angles.
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Signs of Angle-Closure and Narrow Angles
Many individuals with anatomically narrow angles have no symptoms and are detected during routine gonioscopic eye examinations. However, when fluid drainage is suddenly or intermittently blocked, acute or subacute angle-closure symptoms can occur:
- Sudden, severe, throbbing eye pain or intense ocular ache
- Severe unilateral headache or brow ache on the side of the affected eye
- Blurred or hazy vision, frequently accompanied by rainbow-coloured haloes around lights
- Nausea, profuse vomiting, and general malaise accompanying acute ocular pain
- Marked ocular redness (ciliary flush) and a mid-dilated, sluggish, or non-reactive pupil
- Intermittent episodes of blurred vision and mild eye ache, often occurring in dim lighting or during emotional stress