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Clinical Trial
. 2020 Mar 3;20(1):81.
doi: 10.1186/s12886-020-01343-x.

Safety and efficacy of a standardized intracameral combination of mydriatics and anesthetic for cataract surgery in type-2 diabetic patients

Marc Labetoulle  1 , Anders Behndig  2 , Marie-José Tassignon  3 , Rudy Nuijts  4 , Rita Mencucci  5 , José Luis Güell  6 , Uwe Pleyer  7 , Jacek Szaflik  8 , Paul Rosen  9 , Alain Bérard  10 , Frédéric Chiambaretta  11 , Béatrice Cochener-Lamard  12 ; Intracameral Mydrane (ICMA), Ethics Group
Collaborators, Affiliations
Clinical Trial

Safety and efficacy of a standardized intracameral combination of mydriatics and anesthetic for cataract surgery in type-2 diabetic patients

Marc Labetoulle et al. BMC Ophthalmol. .

Abstract

Background: Cataract surgery in diabetics is more technically challenging due to a number of factors including poor intraoperative pupil dilation and a higher risk of vision threatening complications. This study evaluates the safety and efficacy of an intracameral combination of 2 mydriatics and 1 anesthetic (ICMA, Mydrane) for cataract surgery in patients with well-controlled type-2 diabetes.

Methods: Post-hoc subgroup analysis of a phase 3 randomized study, comparing ICMA to a conventional topical regimen. Data were collected from 68 centers in Europe and Algeria. Only well-controlled type-2 diabetics, free of pre-proliferative retinopathy, were included. The results for non-diabetics are also reported. The primary efficacy variable was successful capsulorhexis without additional mydriatic treatment. Postoperative safety included adverse events, endothelial cell density and vision.

Results: Among 591 randomized patients, 57 (9.6%) had controlled type 2 diabetes [24 (42.1%) in the ICMA Group and 33 (57.9%) in the Topical Group; intention-to-treat (ITT) set]. Among diabetics, capsulorhexis was successfully performed without additional mydriatics in 24 (96.0%; modified-ITT set) patients in the ICMA Group and 26 (89.7%) in the Topical Group. These proportions were similar in non-diabetics. No diabetic patient [1 (0.5%) non-diabetics] in the ICMA Group had a significant decrease in pupil size (≥3 mm) intraoperatively compared to 4 (16.0%; modified-ITT set) diabetics [16 (7.3%) non-diabetics] in the Topical group. Ocular AE among diabetics occurred in 2 (8.0%; Safety set) patients in the ICMA Group and 5 (16.7%) in the Topical Group. Endothelial cell density at 1 month postoperatively was similar between groups in diabetics (P = 0.627) and non-diabetics (P = 0.368).

Conclusions: ICMA is effective and can be safely used in patients with well-controlled diabetes, with potential advantages compared to a topical regimen including reduced systemic risk, better corneal integrity and reduced risk of ocular complications.

Trial registration: The trial was registered at (reference # NCT02101359) on April 2, 2014.

Keywords: Anesthetics; Cataract surgery; Diabetes; Intracameral; Mydrane; Mydriatics.

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Conflict of interest statement

Dr. Labetoulle reports personal fees from ALCON, personal fees from Allergan, personal fees from Bausch & Lomb, personal fees from Dompe, personal fees from Horus, personal fees from MSD, personal fees from Novartis, personal fees from Santen, personal fees from Shire, grants and personal fees from Laboratoires Thea, outside the submitted work. Dr. Behndig has nothing to report. Dr. Tassignon reports personal fees from Laboratoires Thea, personal fees from Zeiss, personal fees from Morcher, personal fees from Ziemer, outside the submitted work. Dr. Nuijts reports grants, personal fees and non-financial support from Laboratoires Thea, during the conduct of the study; grants from Alcon, grants from Abbott AMO, grants from Bausch and Lomb, outside the submitted work. Dr. Mencucci has nothing to disclose. Dr. Pleyer has nothing to disclose. Dr. Güell is a Consultant for Ophtec, Kowa Zeiss Meditec, Alcon, Laboratoires Thea, Orca Surgical and an owner of Calhoun Vision and Visiometrics and received a grant from instituto Microcirugia Ocular. Dr. Szaflik has nothing to disclose. Dr. Rosen has nothing to disclose. Dr. Bérard has received funding for participating in the study from Laboratoires Thea. Dr. Chiambaretta was a consultant for Laboratoires Thea, Novartis and Santen. Dr. Cochener-Lamard reports grants from Alcon, personal fees from Zeiss, personal fees from Johnson and Johnson, personal fees from Hoya, grants and personal fees from Laboratoires Thea, personal fees from Santen, personal fees from Cutting Edge, and personal fees from Horus, outside the submitted work.

Figures

Fig. 1
Fig. 1
Efficacy of mydriasis in diabetic and non-diabetic patients (mITT set) who received ICMA for intracameral injection at the beginning of cataract surgery (Mydrane) or a standard topical regimen (Topical) for cataract surgery. a Successful capsulorhexis without any additional mydriatic treatment (Primary efficacy variable). b Successful capsulorhexis without any additional mydriatic treatment and a pupil size of at least 6 mm (Supplementary efficacy variable). ICMA = intracameral combination of two mydriatics and one anaesthetic; p < 0.05 is statistically significant
Fig. 2
Fig. 2
Pupil size throughout cataract surgery among diabetics and non-diabetics (mITT set) who received ICMA for intracameral injection at the beginning of cataract surgery (Mydrane) or a standard topical regimen (Topical) for cataract surgery. IOL = intraocular lens; ICMA = intracameral combination of two mydriatics and one anaesthetic
Fig. 3
Fig. 3
a Intraoperative change in pupil diameter starting just before capsulorhexis to the end of surgery among diabetic and non-diabetic patients (mITT set) who received ICMA for intracameral injection at the beginning of cataract surgery (Mydrane) or a standard topical regimen (Topical) for cataract surgery. b Stratification of change in pupil size from just before capsulorhexis to the end of surgery among diabetic and non-diabetic patients who received ICMA for intracameral injection at the beginning of cataract surgery or a standard topical regimen for cataract surgery. ICMA = intracameral combination of two mydriatics and one anaesthetic
Fig. 4
Fig. 4
Duration of the different phases of surgery for diabetic and non-diabetic patients (mITT set) who received ICMA for intracameral injection at the beginning of cataract surgery (Mydrane) or a standard topical regimen (Topical) for cataract surgery. These phases included a mandated 1 min 30 s waiting time for the ICMA Group in the study protocol. ICMA = intracameral combination of two mydriatics and one anaesthetic
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References

    1. Guariguata L, Whiting DR, Hambleton I, Beagley J, Linnenkamp U, Shaw JE. Global estimates of diabetes prevalence for 2013 and projections for 2035. Diabetes Res Clin Pract. 2014;103:137–149. doi: 10.1016/j.diabres.2013.11.002. - DOI - PubMed
    1. Becker C, Schneider C, Aballéa S, Bailey C, Bourne R, Jick S, et al. Cataract in patients with diabetes mellitus-incidence rates in the UK and risk factors. Eye (Lond) 2018;32:1028–1035. doi: 10.1038/s41433-017-0003-1. - DOI - PMC - PubMed
    1. Srinivasan S, Raman R, Swaminathan G, Ganesan S, Kulothungan V, Sharma T. Incidence, progression, and risk factors for cataract in type 2 diabetes. Invest Ophthalmol Vis Sci. 2017;58:5921–5929. doi: 10.1167/iovs.17-22264. - DOI - PubMed
    1. Javadi MA, Zarei-Ghanavati S. Cataracts in diabetic patients: a review article. J Ophthalmic Vis Res. 2008;3:52–65. - PMC - PubMed
    1. Srinivasan S. Cataract surgery in patients with diabetes. J Cataract Refract Surg. 2017;43:1369–1370. doi: 10.1016/j.jcrs.2017.10.030. - DOI - PubMed

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