Gonioscopy
Added high-quality sources and clarified optical principle of gonioscopy
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== The goniolens or gonioscope == |
== The goniolens or gonioscope == |
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{{unreferenced|section|date=May 2024}} |
{{unreferenced|section|date=May 2024}} |
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Gonioscopy enables visualization of the iridocorneal angle using a specialized contact lens with mirrors or prisms, which overcomes total internal reflection at the cornea–air interface that otherwise prevents direct observation of the angle. {{Cite journal |last=McNabb |first=Ryan P. |last2=Challa |first2=Pratap |last3=Kuo |first3=Anthony N. |last4=Izatt |first4=Joseph A. |date=2015-04-01 |title=Complete 360° circumferential gonioscopic optical coherence tomography imaging of the iridocorneal angle |url=https://pmc.ncbi.nlm.nih.gov/articles/PMC4399676/ |journal=Biomedical Optics Express |volume=6 |issue=4 |pages=1376–1391 |doi=10.1364/BOE.6.001376 |issn=2156-7085 |pmc=4399676 |pmid=25909021}} |
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The goniolens allows the clinician - usually an [[ophthalmologist]] or [[optometrist]] - to view the irideocorneal angle through a mirror or prism, without which the angle is masked by [[total internal reflection]] from the ocular tissue. |
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The mechanism for this process varies with each type of goniolens. Three examples of goniolenses are the: |
The mechanism for this process varies with each type of goniolens. Three examples of goniolenses are the: |
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