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Since the inaugural colloquium in 1961, the IPC has stood tall for over 60 years in bringing together experts from around the world who study pupillary responses in humans and animals to exchange their thoughts and ideas. The key highlight of the meeting is the Loewenfeld lecture held in commemoration of valuable services of Dr Irene Loewenfeld and her distinguished scientific position in the physiology of the pupil.

34th International Pupil Colloquium

LVPEI in association with the India Vision Institute is hosting the 34th International Pupil Colloquium (IPC) on 20th - 22nd 2023. Held after a hiatus of 3 years owing to the COVID-19 pandemic, the meeting will be conducted in the city of Nizams – Hyderabad, India. This meeting is focused on various aspects of research and technology development pertaining to the pupils and is expected to see delegates from a wide range of disciplines. The meeting includes invited lectures under five listed themes along with paper and poster presentations.


  • Behavior and Neurophysiology of Pupils

  • Pupillary Behavior in Disease

  • Optical Manipulations Involving the Pupils

  • Understanding Cognitive Behavior through the Pupils

  • Technology Development Involving the Pupils

Target Audience

  • Ophthalmologists

  • Optometrist 

  • Neurologists

  • Emergency medicine specialists

  • Sports medicine researchers

  • Visual neuroscience researchers

  • Researchers with interest in optics, cognitive science and developmental biology



The 34th International Pupil Colloquium program sessions have been selected to include a wide range of topics for delegates tailored to suit their specific areas of interests. The 2024 program incorporates theme-based keynote presentations, full lectures, short paper presentations and poster sessions.

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