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Background: To compare retention times of various ophthalmic viscosurgical devices (OVDs) and soft‐shell combinations. Methods: Experimental study. Eighteen rabbit eyes were divided into six groups of three eyes, based on OVDs tested. A: Endocoat, B: HealonPro, C: Viscoat, D: Provisc, E: Endocoat and HealonPro and F: Viscoat and Provisc. OVDs were stained with 10% fluorescein dye before being injected into the anterior chamber. Phacoemulsification, using fixed parameters, was performed. If OVD persisted after 60 s, a standardised irrigation and aspiration technique replaced phacoemulsification. The time until central and complete clearance of the OVD were video‐recorded and measured. Results: Mean central retention times (CRT) were found to be: HealonPro—5.33 ± 2.56 s, Provisc—3.33 ± 1.11 s, Endocoat—75.0 ± 3.26 s, Viscoat—62.33 ± 5.19 s, combining HealonPro with Endocoat—22.67 ± 4.75 s and Provisc with Viscoat—11.0 ± 0.82 s. The mean total retention time (TRT) was: Endocoat—80.0 ± 8.17 s, Viscoat—81.67 ± 2.09 s, HealonPro with Endocoat—81.33 ± 3.35 s, and Provisc with Viscoat—71.0 ± 2.94 s. For HealonPro and Provisc, CRT and TRT remained identical across all trials. Conclusions: Retention times varied, with cohesive OVDs exhibiting shorter durations than dispersive OVDs. Among dispersive OVDs, TRTs were comparable; however, Endocoat displayed an extended CRT. In soft shell trials, the combination of HealonPro and Endocoat exhibited prolonged CRT and TRT, suggesting enhanced corneal protection. [ABSTRACT FROM AUTHOR]

Phacoemulsification in hard cataracts is a challenge. The use of dispersive ophthalmic viscosurgical devices (OVDs) to protect the endothelium is a routine step in such scenarios. However, as OVD is transparent, it is difficult to spot within the anterior chamber. Therefore, surgeons may not be aware when the OVD coating of the endothelium disappears during surgery. Consequently, there may be too frequent OVD injections, resulting in a waste of resources. On the contrary, the surgeon may fail to inject OVD at an appropriate time, leading to greater endothelial damage. We propose a novel technique of using an air bubble as a guide that helps in identifying the time when OVD disappears from the anterior chamber, thereby suggesting the surgeon to reinject before proceeding further.

Phacoemulsification in hard cataracts is a challenge. The use of dispersive ophthalmic viscosurgical devices (OVDs) to protect the endothelium is a routine step in such scenarios. However, as OVD is transparent, it is difficult to spot within the anterior chamber. Therefore, surgeons may not be aware when the OVD coating of the endothelium disappears during surgery. Consequently, there may be too frequent OVD injections, resulting in a waste of resources. On the contrary, the surgeon may fail to inject OVD at an appropriate time, leading to greater endothelial damage. We propose a novel technique of using an air bubble as a guide that helps in identifying the time when OVD disappears from the anterior chamber, thereby suggesting the surgeon to reinject before proceeding further. [ABSTRACT FROM AUTHOR]