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Related Experiment Video

Updated: Apr 10, 2026

Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation

Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation

Published on: November 26, 2019

Small Pupil--Big Problem: A Management Algorithm.

Vineet Ratra¹, Dennis S C Lam

¹From the *The C-MER (Shenzhen) Dennis Lam Eye Hospital, Shenzhen; and †The State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, People's Republic of China.

Asia-Pacific Journal of Ophthalmology (Philadelphia, Pa.)

|June 13, 2015

Summary

This summary is machine-generated.

Small pupils complicate cataract surgery, increasing risks. This review discusses methods, from pre-operative drugs to surgical techniques, to achieve adequate pupil dilation for safer procedures.

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Area of Science:

Ophthalmology
Surgical Science

Background:

Small pupils (miosis) present challenges during cataract surgery.
Inadequate pupil dilation increases the risk of surgical complications like iris trauma and capsular tears.

Purpose of the Study:

To review and discuss management strategies for achieving adequate pupil dilation in cataract surgery.
To present an algorithm for managing small pupils during ophthalmic procedures.

Main Methods:

Review of pre-operative pharmacological interventions.
Discussion of intraoperative pharmacological and surgical pupil expansion techniques.
Exploration of combined and isolated use of various dilation methods.

Main Results:

Multiple methods exist to manage small pupils, including medications and surgical maneuvers.
These techniques can be employed individually or in combination to optimize surgical conditions.

Conclusions:

Effective pupil dilation is crucial for safe and successful cataract surgery.
A structured approach, incorporating various available methods, can overcome challenges posed by small pupils.