MEDIVEERSETHE PRACTICAL HUB
The narrowing working end permits gradual dilation of the punctal opening.
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Punctum dilator — reference view
Image: Sarindam7 · Source / original · CC BY-SA 4.0Resized and converted to WebP; original colours retained.
Punctum dilator
Nettleship punctum dilator
What is its use?
Enlarges the lacrimal punctal opening when clinically indicated before selected lacrimal procedures.
Tap a number to locate its part. Zoom, drag or use full screen to inspect the reference. Models and graduations can differ; check the actual instrument used in your practical class or clinical posting.
How to recognise it.
- Tapered working end
- Slender shaft
- Grip for controlled manipulation
A punctum dilator enlarges an entry opening; a Bowman probe explores or traverses the drainage pathway.
Point them out.
Choose a part to bring its numbered marker into view.
How it works.
A gradually widening tip mechanically dilates the opening.
Think first. Then reveal.
Explain your answer aloud before opening it.
01What is the punctum?+
A small opening on the eyelid margin through which tears enter a canaliculus.
02Why is the tip tapered?+
It permits graduated dilation rather than abrupt stretching.
03Is this an irrigation device?+
No. A solid dilator does not inject fluid.
04What complication can excessive force cause?+
Tissue injury, scarring or creation of an abnormal passage.
Read the references.
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