Patents & Publications

Title: ‘Device Providing Enlargement & Preventing Collapse of the Pupil of the Eye’
Has been granted/ Issued in the following countries:
India 294336, USA US 10,080,558 B2, Japan 6233728, Australia 2013380203,
Canada CA2902800C,China CN105142535B, France FR2961329,
Germany DE602013033382.3, Italy IT2961329, Spain EP2961329,
United Kingdom EP (UK) 2961329,Netherlands NL2961329,
Switzerland & Lichtenstein CH2961329,Korea 10-1865629
Singapore 11201508026R & Hong Kong HK1218703


1. Bhattacharjee S. Ten Tips for Phacoemulsification in Small Pupil. Read More

2. Chakraborty D, Mohanta A, Bhaumik A. B-HEX pupil expander in vitreoretinal surgery – A case series. Indian J Ophthalmol Jun 2020;68:1188-91. Available from: Read More

3. Bhattacharjee Suven. B-HEX Pupil Expander: Pupil Expansion Redefined. Indian J Ophthalmol 2017;65:1407-10. Read More

4. 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 2014. Read More

5. ‘Pupil Expansion Simplified’ - a film on B-HEX is selected to - 2018 Films in ASCRS Center for Learning. ASCRS members can watch video at Read More

6. Bhattacharjee Suven. Change the Mindset – Think Hexagon Instead of Square for Pupil Expanders. American Academy of Ophthalmology 2017 (Poster)Read More

7. 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

8. Miller Kevin M, Dalton Michelle. Hooks and expanders ease difficult cataract surgery. Eyeworld, Aug 2014. Read More

9. Jacob Soosan. SMALL PUPILS - Everything you ever wanted to know about small pupil phacoemulsification – Part 2; Eurotimes, February 1, 2017. Read More

10. Febbraro Jean-Luc. Evaluation of an Iris Dilatation Ring in Cataract Surgery; Fondation Ophtalmologique A. de Rotchschild (Rothschild Foundation), Paris, France, 75019; ClinicalTrials.gov Identifier: NCT02434588 First Posted: May 5, 2015. Read More

11. 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 131–133Read More

12. Bhattacharjee Suven. How large is just large enough. Presented at the XXXIV congress of the ESCRS 2016 at Copenhagen, Denmark (Poster). Read More

13. Bhattacharjee Suven. Pupil expansion devices for MICS: Ophthalmology Times Europe;Nov2014, Vol. 10 Issue 9, p18: Read More

14. Groves Nancy: Novel design for pupil dilation device expands realm of surgical options; Ophthalmology Times, July 2014; Read More

15. Lohit Jagwani: Indian doctors explore disruptive technologies. 24 Sep 20144.Read More

16. Bhattacharjee Suven. My proudest surgical moment; Cataract & Refractive Surgery Today Europe Nov/ Dec 2015: Read More