Intraocular pressure variation by pneumatic tonometer before and after phacoemulsification

Rodrigues, Francisco Wellington; Silva, Camilla de Mn; Modesto, Déborah Capel; Oliveira, Antônio Ws de; Silva, Rodrigo Egidio da

doi:10.1177/1120672117746931

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…In the present study, using the pneumatic tonometer, it was evidenced that the IOP values were significantly reduced after isolated cataract surgery and combined surgery in the short and medium term, when compared with the preoperative measurements. Some studies 36 , 37 have already shown a reduction in IOP in a short period of time in isolated cataract, as well as a good concordance between the calibration of pneumatic tonometry and Goldmann’s applanation tonometry. We believe that in the near future, with technological improvement, new studies will be able to analyze this pressure behavior with better accuracy, in relation to the measurement of IOP through pneumatic tonometry.…”

Section: Discussionmentioning

confidence: 80%

Comparison of variation of intraocular pressure in noncontact tonometry in patients subjected to phacoemulsification and trabeculectomy with phacoemulsification

Rodrigues

Pucci

Cintra

et al. 2018

OPTH

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ObjectiveEvaluate the pattern of intraocular pressure (IOP) variations through the pneumatic tonometer, between two specific surgical techniques, and the possible variables that may influence the behavior of this pressure.MethodsRetrospective cross-sectional study carried out through the review of electronic medical records of a private ophthalmological reference hospital in the city of Goiânia, Goiás, Brazil, from 2012 to 2016, comprising of a sample of 550 eyes. The analyzed variables were, age, gender, IOP, axis, pachymetry, anterior chamber depth, and axial length.ResultsIn the end, the study consisted of 231 eyes, represented by 179 patients. Of these, 182 eyes were operated on by isolated cataract surgery, with a mean age of 72.0±9.5 years. The combined surgery represented a total of 49 eyes, 34 patients with a mean age of 71.9±8.14 years. There was statistical significance (P<0.05) in correlating the pre- and postoperative IOP values in the 24-hour, 7-, 15-day, and 12-month postoperative periods.ConclusionA standard of variation of IOP was found through the pneumatic tonometer in both surgical techniques, but a more significant reduction was observed in combined surgery than in isolated cataract surgery, and further studies with a greater epidemiological impact are required for confirmation of this conclusion.

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Section: Discussionmentioning

confidence: 80%

Comparison of variation of intraocular pressure in noncontact tonometry in patients subjected to phacoemulsification and trabeculectomy with phacoemulsification

Rodrigues

Pucci

Cintra

et al. 2018

OPTH

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“…The significant negative contribution of age to the follow-up IOP may be attributable to the reduced production of aqueous humor with age, as supported by the majority of related studies in Asia [ 33 ], whereas contrasting results have been obtained in non-Asian studies [ 34 ]. Furthermore, preoperative IOP has long been regarded as a reliable predictor of postoperative IOP in previous studies [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

Morphological features of anterior segment: factors influencing intraocular pressure after cataract surgery in nanophthalmos

Lü

et al. 2020

Eye and Vis

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Purpose To investigate the anterior segment in nanophthalmic eyes and their association with intraocular pressure after cataract surgery. Methods Thirty-two nanophthalmic eyes (axial length [AL] < 18.5 mm) in 18 patients and 35 normal eyes (21 ≤ AL ≤ 24.5 mm) in 35 controls who had undergone uneventful cataract surgery were included. Swept-source optical coherence tomography was used to compare the anterior segment structures between the two groups. The associations between the anterior segment characteristics of nanophthalmic eyes and postoperative intraocular pressure (IOP) were also investigated. Results The IOP-lowering effect of cataract surgery was remarkably insufficient in nanophthalmic eyes. Peripheral anterior synechiae (PAS) were observed in 56% (18/32) of nanophthalmic eyes, and a characteristic boomerang-shaped iris was observed in 28% (9/32). The anterior surface of the iris seemed “smoother” in nanophthalmic eyes than in normal eyes. Schlemm’s canal (SC) diameter, SC area, trabecular meshwork (TM) thickness, TM width, and TM area were generally smaller in the nanophthalmic eyes. Younger age, higher preoperative IOP, broader PAS, and smaller SC area were main contributors to higher postoperative IOP. AL and SC diameter may also be of great importance in IOP prediction in patients without glaucoma surgery and PAS. Conclusions The morphological features of the anterior segment in nanophthalmic eyes are significantly different from those of normal eyes. Influencing factors such as age, AL, preoperative IOP, extent of PAS, SC and TM size could all be prognostic for IOP after cataract surgery in nanophthalmic eyes. Trial registration ClinicalTrails.gov, Trial registration number: NCT02182921, Registered 8 July 2014.

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Intraocular pressure variation by pneumatic tonometer before and after phacoemulsification

Cited by 2 publications

References 14 publications

Comparison of variation of intraocular pressure in noncontact tonometry in patients subjected to phacoemulsification and trabeculectomy with phacoemulsification

Comparison of variation of intraocular pressure in noncontact tonometry in patients subjected to phacoemulsification and trabeculectomy with phacoemulsification

Morphological features of anterior segment: factors influencing intraocular pressure after cataract surgery in nanophthalmos

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