‘Device Providing Enlargement & Preventing Collapse of the Pupil of the Eye

Granted/ Issued in the following countries

India 294336, USA US 10,080,558 B2, Canada CA2902800C

Japan 6233728, Germany DE602013033382.3, Italy IT2961329,

France FR2961329, Spain EP2961329, UK EP (UK) 2961329,

Netherlands NL2961329, Switzerland & Lichtenstein CH2961329,

Australia 2013380203, China ZL201380075982.4, Korea 10-1865629


  • Bhattacharjee S. Ten Tips for Phacoemulsification in Small more
  • Chakraborty D, Mohanta A, Bhaumik A. B-HEX pupil expander in vitreoretinal surgery – A case series. Indian J Ophthalmol Jun 2020; more
  • Tripathy K, MajumdarS, Akkara JD, PatelAlpa S: Pupil expansion devices and mechanical stretching of the pupil, American Academy of Ophthal, more
  • Bhattacharjee Suven. B-HEX Pupil Expander: Pupil Expansion Redefined. Indian J Ophthalmol 2017;65:1407-10. Most read paper in more
  • Bhattacharjee Suven. Pupil-expansion ring implantation through a 0.9 mm incision. Journal of Cataract & Refractive Surgery. 2014; 40:1061–1067. Most Read Paper in 2014read more
  • 'Pupil Expansion Simplified’ -a film on B-HEX is selected to ‘2018 Films in ASCRS Center for Learning’read more
  • Salviat, F., Febbraro, JL., Zuber, K. et al. Evaluation of a uniplanar pupil expansion ring in small-pupil cataract surgery: a feasibility study. Int Ophthalmol 42, 489–496 (2022).read more
  • Sarosh R, Rashid O. B-Hex, an ace up the sleeve for small pupil phacoemulsification. Rom J Ophthalmol. 2022 Jan-Mar;66(1):61-68. doi: 10.22336/rjo.2022.13. read more
  • Bhattacharjee Suven. Change the Mindset –Think Hexagon Instead of Square for Pupil Expanders. American Academy of Ophthalmology 2017 (Poster)read more
  • Bhattacharjee Suven. Efficacy and safety of an injector-free preloaded delivery system for the new B-HEX pupil expander: 36th congress of the ESCRS 2018 at Vienna, Austria (Poster)read more
  • Miller Kevin M, Dalton Michelle. Hooks and expanders ease difficult cataract surgery. Eyeworld, Aug more
  • Jacob Soosan. SMALL PUPILS -Everything you ever wanted to know about small pupil phacoemulsification –Part 2; Eurotimes, February 1, more
  • Febbraro Jean-Luc. Evaluation of an Iris Dilatation Ring in Cataract Surgery; Fondation Ophtalmologique A. de Rotchschild (Rothschild Foundation), Paris, France, 75019; Identifier: NCT02434588 First Posted: May 5, more
  • Ram Jagat, Gupta Gaurav, Agarwal Aniruddha. Recent Principles and Trends of Management of Uveitic more
  • Ratra, Vineet; Lam, Dennis S. C. Small Pupil—Big Problem: A Management Algorithm; Asia-Pacific Journal of Ophthalmology:May / June 2015 -Volume 4 -Issue 3 -p 131– more
  • Bhattacharjee Suven. How large is just large enough (5.5 mm expanded pupil is adequate for safe Phaco). Presented at the XXXIV congress of the ESCRS 2016 at Copenhagen, Denmark (Poster).read more
  • Groves Nancy: Novel design for pupil dilation device expands realm of surgical options; Ophthalmology Times, July 2014;read more
  • Lohit Jagwani: Indian doctors explore disruptive technologies. 24 Sep more

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