A prospective study on trypan blue capsule staining under air vs under viscoelastic

Abstract

Aim To compare the safety and effectiveness of trypan blue capsule staining under air vs under viscoelastic. Methods A total of 52 consecutive patients planned for phacoemulsification of white mature cataract were randomly assigned to trypan blue staining under air or under viscoelastic. Perioperative changes in bestcorrected visual acuity (BCVA), central corneal thickness (CCT), and endothelial cell density (ECD) were compared between the two groups. The differences in operating and phacoemulsification times, staining pattern, and complications between the two groups were also recorded. Results Phacoemulsification of white mature cataract was performed in 50 (96%) eyes. The median preoperative BCVA was hand movement. No significant differences in the baseline characteristics were found between the two groups. At 3 months after phacoemulsification, the median BCVA improved to 0.8. The mean CCT returned to preoperative level by 1 month postoperatively and the mean ECD loss was 11.9% 3 months postoperatively. No significant differences in median BCVA, mean phacoemulsification and operation times, mean CCT, and mean ECD were found between the two groups. Conclusions Trypan blue staining of the anterior lens capsule under air or under viscoelastic were similarly effective and safe methods for the phacoemulsification of white mature cataract.

Safety and Efficacy of Micro-Incisional Cataract Surgery with Bimanual Phacoemulsification for White Mature Cataract

“…The mean loss of ECD after coaxial phacoemulsification for white mature cataract was reported to range from 8.5 to 18.6% at 3–6 months after surgery [1, 3, 5]. In our study, the mean ECD loss after MICS was 9.6% at 3 months postoperatively and was comparable with previous studies on coaxial phacoemulsification for white mature cataract.…”

“…The median BCVA improved from hand movement preoperatively to 0.6 on day 1 postoperatively and all patients had a BCVA of 0.6 or better at 3 months postoperatively. The mean increase in CCT on day 1 postoperatively was 11.5% which is comparable to previous studies in which coaxial phacoemulsification was performed for mature cataract, with the mean increase in CCT ranging from 12.8 to 17% [1, 4, 5]. …”

“…Previous studies have demonstrated the safety and efficacy of coaxial phacoemulsification for the removal of white mature cataract through a standard 2.8- to 3.0-mm incision with good visual outcome [1,2,3,4,5]. With the advancement in phacoemulsification technology, micro-incisional cataract surgery (MICS) with bimanual phacoemulsification allows cataract removal via wounds of less than 1.4 mm [6,7,8,9,10,11,12,13].…”

Capsular staining: recent developments

“…Recent studies have compared the efficacy and safety of these dyes [9][10][11][12][13][14]. Dada et al [12] compared Trypan Blue 0.1%, Gentian Violet 0.001%, ICG 0.5%, fluorescein 2%, and the patient's autologous blood for anterior capsular staining in cases of white cataracts.…”

Trypan blue dye for anterior segment surgeries

“…10 Techniques for capsule staining Different methodologies for injecting the dye have been described, including beneath air, 5,18 beneath ophthalmic surgical device (OVD), 19,20 beneath OVD and BSS, 21,22 and mixing with an OVD. 9,23, 16 Wong et al 24 found both methods equivalent.…”