Duration of room air tamponade after vitrectomy

Lee, Jae Jung; Kwon, Han Jo; Lee, Seung Min; Byon, Ik Soo; Lee, Ji Eun; Park, Sung Who

doi:10.1007/s10384-020-00714-7

Cited by 10 publications

(7 citation statements)

References 16 publications

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“…The duration of the half-life of air differs from study to study; it was 4.8 ± 0.6 days in the present study, 1.6 days in a study conducted by Thompson in 1898 14 , and approximately 3.3 days in a study conducted by Lee et al in 2020 15 . Su cient shaving of the peripheral vitreous was associated with an increased amount of air injection, leading to the extension of the half-life of air.…”

Section: Discussioncontrasting

confidence: 60%

Efficacy of Vitrectomy with Air Tamponade for Rhegmatogenous Retinal Detachment: A Prospective Study

Nishi

Nakamura

Nishitsuka

2023

Preprint

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Rhegmatogenous retinal detachment (RRD) causes a permanent decrease in visual acuity and visual field. During pars plana vitrectomy (PPV) for RRD, long acting gas have been selected for tamponade because gas stays in the eye for a long time. Recently, several studies have showed the efficacy of air tamponade for RRD treatment. Few prospective studies have analyzed the efficacy of air tamponade. We registered 194 eyes from 190 patients who consented to a prospective study of PPV with air tamponade for RRD by a single surgeon from June 2019 to November 2022. These patients were all treated with air tamponade without silicone oil and were followed for > 3 months postoperatively. Primary success rates were 97.9% (190/194) in total cases, with no discernible difference between the uncomplicated (100%:87/87) and complicated (96.3%: 103/107) RRD groups (P = 0.13). There was no considerable difference in primary success rate between upper break (97.9%:143/146) and lower break cases (97.9%:47/48). Proliferative vitreoretinopathy (PVR) grade C was associated with initial failure by multivariate analysis (P = 0.00003). Air tamponade has a sufficient therapeutic effect in cases of RRD less than PVR grade C, regardless of the location of the retinal tear.

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Section: Discussioncontrasting

confidence: 60%

Efficacy of Vitrectomy with Air Tamponade for Rhegmatogenous Retinal Detachment: A Prospective Study

Nishi

Nakamura

Nishitsuka

2023

Preprint

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“…[ 30–35 ] These studies may not be representative of current practice, especially with regards to the duration of the air bubble in the posterior chamber of the eye, which is perceived to be longer in clinical settings than in theoretical ones. [ 36,37 ] The half‐life of intraocular gases is shorter in aphakic eyes than in phakic eyes, due to the increased convection in the vitreous cavity. [ 38 ] Following the vitrectomy procedure, convection currents appear in the aphakic eye, which accelerate the absorption rate.…”

Section: Vitreous Substitutes In Clinical Practicementioning

confidence: 99%

“…In a recent retrospective cohort study, a half‐life of 3.3 d with a longevity of 11.4 d was determined. [ 37 ]…”

Section: Vitreous Substitutes In Clinical Practicementioning

confidence: 99%

Current Situation and Challenges in Vitreous Substitutes

García

Bandín-Vilar

García-Quintanilla

et al. 2021

Macromolecular Bioscience

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Vitreo‐retinal disorders constitute a significant portion of treatable ocular diseases. These pathologies often require vitreo‐retinal surgery and, as a consequence, the use of vitreous substitutes. Nowadays, the vitreous substitutes that are used in clinical practice are mainly divided into gases (air, SF6, C2F6, C3F8) and liquids (perfluorocarbon liquids, silicone oils, and heavy silicone oils). There are specific advantages and drawbacks to each of these, which determine their clinical indications. However, developing the ideal biomaterial for vitreous substitution continues to be one of the most important challenges in ophthalmology, and a multidisciplinary approach is required. In this sense, recent research has focused on the development of biocompatible, biodegradable, and injectable hydrogels (natural, synthetic, and smart), which also act as medium and long‐term internal tamponade agents. This comprehensive review aims to cover the main characteristics and indications for use of the extensive range of vitreous substitutes that are currently used in clinical practice, before going on to describe the hydrogels that have been developed recently and which have emerged as promising biomaterials for vitreous substitution.

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“…Some studies show that sterilizing air can also be used for macular hole repair and achieve satisfactory results [3][4][5][6][7]. e advantage of sterilizing air is that the time of prone position is short [8], which is not easy to cause high intraocular pressure. However, the disadvantage is that the absorption time of sterilizing air is short so that the closure rate in the large size of macular hole is lower than inflating gas [9].…”

Section: Introductionmentioning

confidence: 99%

Air-Liquid Exchange by Free Hand and One Needle for Unhealed Macular Hole

Lin

Xia

et al. 2022

Journal of Ophthalmology

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Aim. To report the treatment of 7 cases of unsealed hole after macular hole surgery with air-fluid exchange. Methods. Retrospective case series. We collected 7 eyes of 7 patients with unsealed hole an unsealed hole about 2 weeks after macular hole surgery (23G vitrectomy with internal limiting membrane peeling with sterilizing air tamponade) in our hospital from February 2018 to December 2018. All patients underwent “air-liquid exchange by free hand and one needle.” The prone position was taken one week after operation. The macular holes before and after operation were examined by frequency-domain optical coherence tomography (SD-OCT). Results. The size of the macular hole before vitrectomy was 481 ± 156 μm (range: 281–609 μm). Two weeks after vitrectomy (before air and liquid exchange), the size of the macular hole was 295 ± 92 μm (range: 210–421 μm). All macular holes were closed within 7–14 days after air-liquid exchange. There was no complaint of discomfort among these patients. Conclusion. From this preliminary study, air-liquid exchange by free hand and one needle seems to be safe and effective in the treatment for patients with unsealed and tiny macular hole after vitrectomy as the lack of long effective gas in China. However, the exact efficacy and safety need further large case studies.

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Duration of room air tamponade after vitrectomy

Cited by 10 publications

References 16 publications

Efficacy of Vitrectomy with Air Tamponade for Rhegmatogenous Retinal Detachment: A Prospective Study

Efficacy of Vitrectomy with Air Tamponade for Rhegmatogenous Retinal Detachment: A Prospective Study

Current Situation and Challenges in Vitreous Substitutes

Air-Liquid Exchange by Free Hand and One Needle for Unhealed Macular Hole

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