The accuracy of Goldmann applanation tonometry over silicone hydrogel contact lenses in patients with glaucoma

Gomes, Beatriz A.F.; Turiel, Paulo Romeu de Freitas; Cavalcanti, Rachel Simões; Moraes, Haroldo Vieira de; Santhiago, Marcony R.

doi:10.1016/j.clae.2014.04.003

Cited by 5 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results are in agreement with a similar previous study conducted in glaucomatous patients that found a mean difference of −0.57 ± 2.3 mm Hg (95% CI, −1.5–0.3]. [ 29 ]…”

Section: Discussionsupporting

confidence: 93%

Comparison of intraocular pressure measurement with Scheimpflug-based noncontact tonometer with and without hydrogel contact lenses

Kumar

Shetty

Jayadev

et al. 2015

Indian J Ophthalmol

View full text Add to dashboard Cite

Objectives:The objective was to determine the repeatability of intraocular pressure (IOP) measurements made through a soft contact lens (CL) using the Scheimpflug noncontact tonometry in healthy subjects.Methods:This prospective, randomized, single-center study included one eye of 88 subjects (40 male and 48 female). Only participants without glaucoma or any other ocular pathology were included in this study. Three consecutive IOP measurements by the Scheimpflug noncontact tonometry were performed with and without daily disposable hydrogel CLs (−0.50 DS) (Dailies-nelfilcon A, 69% water, 8.7 mm base curve, 14 mm diameter, center thickness 0.10 mm) by a single operator. To avoid any bias arising from diurnal variation, all measurements were made at a similar time of day (11 am ± 1 h). The repeatability of IOP measurements using the Scheimpflug noncontact tonometry with and without CLs was evaluated using Pearson's correlation analysis. Bland-Altman plotting was used to assess the limits of agreement between the measurements with and without CLs.Results:The mean (± standard deviation) IOPs with and without CL were 13.80 ± 2.70 and 13.79 ± 2.54 mm of Hg respectively. The mean difference was 0.01 ± 0.16 (95% confidence interval, +1.97 to − 2.00) mm Hg. Statistical analysis via paired t-test showed no statistical difference between the two groups with (P = 0.15). A good correlation was found for IOP measurements with and without CL (r = 0.93, P < 0.001). Good test-retest reliability was found when IOP was measured with and without CL.Conclusion:There was no significant difference between IOP measured with and without CLs by Scheimpflug noncontact tonometry.

show abstract

“…Our results are in agreement with a similar previous study conducted in glaucomatous patients that found a mean difference of −0.57 ± 2.3 mm Hg (95% CI, −1.5–0.3]. [ 29 ]…”

Section: Discussionsupporting

confidence: 93%

Comparison of intraocular pressure measurement with Scheimpflug-based noncontact tonometer with and without hydrogel contact lenses

Kumar

Shetty

Jayadev

et al. 2015

Indian J Ophthalmol

View full text Add to dashboard Cite

show abstract

“…Anton et al reported that even for glaucoma patients, the result of IOP measurements tonometry was sufficiently accurate for clinical practice [24]. Poor agreement has been found between Goldmann applanation tonometer measurements with and without contact lens in glaucoma patients with high IOP [25]. But the results of the report from Gomes should not be used in this study for two reasons: first, inconsistent with the study of Gomes et al, the majority of patients wearing contact lenses in this study were postoperative and with normal IOP; second, these authors concluded that the IOP was higher as measured over the contact lens than without contact lens, which will not change the results of this study [25].…”

Section: Discussionmentioning

confidence: 99%

Study of the Efficacy and Safety of Contact Lens Used in Trabeculectomy

Zhang

Yang

2019

Journal of Ophthalmology

View full text Add to dashboard Cite

Purpose. To investigate the efficacy and safety of soft bandage contact lens used in trabeculectomy. Methods. This was a prospective, randomized study which enrolled 200 glaucoma patients (200 eyes). Patients were randomized into Group 1, using contact lens after trabeculectomy, and Group 2, without contact lens. The primary outcome measurement was the comparison of success rates at 12 months after surgery. Qualified surgical success was defined as a postoperative intraocular pressure (IOP) value of 6–21 mmHg with or without topical antiglaucoma medication use at the last follow-up visit. Complete success was defined as the IOP between 6 and 21 mmHg without any antiglaucoma medication at the last follow-up visit. Postoperative data included IOP values, best-corrected visual acuity (BCVA), number of antiglaucoma medications, complications related to surgery, and bleb characteristics. Results. There were statistically significant differences between Groups 1 and 2 in mean IOP values at 3, 6, and 12 months after surgery (P<0.05). The 12-month life table rates for qualified surgical success were 94.7% and 86.3% in Groups 1 and 2, respectively (P=0.045). The 12-month life table rates for complete surgical success were 89.6% and 80.0% in Groups 1 and 2, respectively (P=0.042). At 12 months after surgery, the mean numbers of antiglaucoma medications were 0.3 ± 0.4 and 0.5 ± 0.6, respectively. (P=0.001). At the 12-month visit, the maximal bleb area was significantly different between groups (P=0.044), with Group 1 exhibiting a more diffused bleb area. Encysted blebs were observed in 7 (7%) eyes in Group 1 and 17 (17%) eyes in Group 2, with statistically significant differences (P=0.030). The 12-month life table rates for qualified surgical success were 94.7% (91 eyes) and 86.3% (82 eyes) in Groups 1 and 2, respectively (P=0.045). Conclusions. Bandage contact lens is a safe and effective device after fornix-based trabeculectomy.

show abstract

“…Villani 4 was probably the first to use a soft contact lens with contact tonometry having the aim of avoiding pharmacological anaesthesia. Several studies showed that measurement of IOP can be performed over soft contact lenses using the Goldmann tonometer, 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 the Mackay Marg tonometer, 13 the Tono-Pen, 14 , 15 , 16 , 17 the gas pneumotonometer, 16 , 17 the non-contact tonometer 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 and the dynamic contour tonometer. 11 , 27 , 28 , 29 …”

Section: Introductionmentioning

confidence: 99%

The measurement of intraocular pressure over positive soft contact lenses by rebound tonometry

Zeri

Cusatis

Lupelli

et al. 2016

Journal of Optometry

View full text Add to dashboard Cite

PurposeTo investigate if the accuracy of intraocular pressure (IOP) measurements using rebound tonometry over disposable hydrogel (etafilcon A) contact lenses (CL) is affected by the positive power of the CLs.MethodsThe experimental group comprised 26 subjects, (8 male, 18 female). IOP measurements were undertaken on the subjects’ right eyes in random order using a Rebound Tonometer (ICare). The CLs had powers of +2.00 D and +6.00 D. Measurements were taken over each contact lens and also before and after the CLs had been worn.ResultsThe IOP measure obtained with both CLs was significantly lower compared to the value without CLs (t test; p < 0.001) but no significant difference was found between the two powers of CLs.ConclusionsRebound tonometry over positive hydrogel CLs leads to a certain degree of IOP underestimation. This result did not change for the two positive lenses used in the experiment, despite their large difference in power and therefore in lens thickness. Optometrists should bear this in mind when measuring IOP with the rebound tonometer over plus power contact lenses.

show abstract

The accuracy of Goldmann applanation tonometry over silicone hydrogel contact lenses in patients with glaucoma

Cited by 5 publications

References 19 publications

Comparison of intraocular pressure measurement with Scheimpflug-based noncontact tonometer with and without hydrogel contact lenses

Comparison of intraocular pressure measurement with Scheimpflug-based noncontact tonometer with and without hydrogel contact lenses

Study of the Efficacy and Safety of Contact Lens Used in Trabeculectomy

The measurement of intraocular pressure over positive soft contact lenses by rebound tonometry

Contact Info

Product

Resources

About