Evaluation of static and dynamic Pupillometry changes in men using Silodosin for benign prostatic hypertrophy

Area of Science:

• Ophthalmology
• Pharmacology

Background:

• Intraoperative floppy iris syndrome (IFIS) is linked to alpha-1 adrenergic blockers used in cataract surgery.
• Predicting IFIS preoperatively is crucial for surgical planning.
• Silodosin is a selective alpha-1 blocker used for benign prostate hypertrophy (BPH).

Purpose of the Study:

• To evaluate static and dynamic pupil characteristics in BPH patients treated with silodosin.
• To compare these pupil characteristics with those of healthy subjects.
• To assess the potential risk of IFIS in patients using silodosin.

Main Methods:

• Prospective, cross-sectional study involving 74 BPH patients on silodosin and 30 healthy controls.
• Quantitative pupillometry used to measure static and dynamic pupil parameters.
• Comparison of pupillometric data between the silodosin-treated group and the control group.

Main Results:

• Significant differences observed in scotopic and photopic pupil diameters between groups (p < 0.001).
• Silodosin-treated patients exhibited increased pupil contraction amplitude and velocity.
• Patients on silodosin showed decreased pupil contraction duration and latency, along with altered dilation dynamics.

Conclusions:

• Silodosin significantly alters both static and dynamic pupil characteristics compared to healthy individuals.
• These altered pupil dynamics may indicate an elevated risk for intraoperative floppy iris syndrome during cataract surgery.
• Awareness of these findings allows surgeons to implement necessary precautions.