DO - Artículos
https://hdl.handle.net/10481/5458
2024-03-28T14:53:35ZIntraocular pressure responses to walking with surgical and FFP2/N95 face masks in primary open-angle glaucoma patients
https://hdl.handle.net/10481/88700
Intraocular pressure responses to walking with surgical and FFP2/N95 face masks in primary open-angle glaucoma patients
Janicijevic, Danica; Redondo Cabrera, Beatriz; Jiménez Rodríguez, Raimundo; Lacorzana, Javier; García Ramos, Amador; Vera Vílchez, Jesús
Purpose
The use of face mask is globally recommended as a preventive measure against COVID-19. However, the intraocular pressure (IOP) changes caused by face masks remain unknown. The objective of this study was to assess the impact of wearing surgical and FFP2/N95 face masks during a 400-m walking protocol on IOP in primary open-angle glaucoma (POAG) patients.
Methods
Thirteen subjects diagnosed of POAG (21 eyes) were enrolled in this study. IOP was measured at baseline, during the 400-m walking protocol and after 5 min of passive recovery while POAG patients wore a surgical mask, FFP2/N95 mask and no mask in randomized order. From the 21 POAG eyes, we analyzed the IOP changes caused by physical exercise with two face masks and without wearing any face mask.
Results
At rest (baseline and recovery measurements), the use of the different face masks did not affect IOP levels (mean differences ranging from 0.1 to 0.6 mmHg). During physical activity, wearing an FFP2/N95 mask caused a small (mean differences ranging from 1 to 2 mmHg), but statistically significant, IOP rise in comparison to both the surgical mask and control conditions (Cohen’s d = 0.63 and 0.83, respectively).
Conclusion
Face masks must be used to minimize the risk of SARS-CoV-2 transmission, and POAG patients can safely use FFP2/N95 and surgical masks at rest. However, due to the IOP rise observed while walking with the FFP2/N95 mask, when possible, POAG patients should prioritized the use of surgical masks during physical activity
Investigating the immediate and cumulative effects of isometric squat exercise for different weight loads on intraocular pressure: a pilot study
https://hdl.handle.net/10481/88544
Investigating the immediate and cumulative effects of isometric squat exercise for different weight loads on intraocular pressure: a pilot study
Vera Vílchez, Jesús; Jiménez Rodríguez, Raimundo; Redondo Cabrera, Beatriz; Torrejon, Alejandro; Koulieris, George; De Moraes, Carlos G.; García Ramos, Amador
Background:
The execution of resistance exercise against heavy loads promotes an acute intraocular pressure (IOP) rise, which has detrimental effects on ocular health. However, the effect of load on the IOP behavior during exercise remains unknown due to technical limitations.
Hypotheses:
IOP monitoring during isometric squat exercise permits assessment of IOP behavior during physical effort. Second, greater loads will induce a higher IOP rise.
Study Design:
Randomized cross-sectional study.
Level of Evidence:
Level 2.
Methods:
Twenty-six young adults (13 women, 13 men) performed an isometric squat exercise against 3 loads relative to their maximum capacity (low, medium, and high). IOP was measured before, during (1 measurement every 6 seconds), and after exercise (10 seconds of recovery).
Results:
There was a progressive IOP rise during exercise, which was dependent on the load applied (Bayes factor10 >100). Higher IOP values were found in the high load condition in comparison with the medium (mean IOP difference = 1.5 mm Hg) and low (mean IOP difference = 3.1 mm Hg) conditions, as well as when the medium load was compared with the low load condition (mean IOP difference = 1.6 mm Hg). Men reached higher IOP values in comparison with women during the last measurements in the high load condition. Ten seconds of recovery were enough to obtain IOP values similar to baseline levels.
Conclusion:
Isometric squat exercise induces an immediate and cumulative IOP elevation, which is positively associated with the load applied. These IOP increments return to baseline values after 10 seconds of recovery, and men demonstrate a more accentuated IOP rise in comparison with women when high levels of effort are accumulated.
Clinical Relevance:
These findings may help in better management of different ocular conditions and highlight the importance of an individualized exercise prescription in clinical populations.
Effects of a blue-blocking screen filter on accommodative accuracy and visual discomfort
https://hdl.handle.net/10481/88543
Effects of a blue-blocking screen filter on accommodative accuracy and visual discomfort
Redondo Cabrera, Beatriz; Vera Vílchez, Jesús; Ortega Sanchez, Alba; Molina Romero, Rubén; Jiménez Rodríguez, Raimundo
Introduction
The prescription of blue-blocking (B-B) filters for the management of visual symptoms and signs associated with the use of electronic devices is routinely performed by eye care specialists. However, the utility of B-B filters is a matter of debate and discussion by the scientific community due to the lack of evidence supporting their use. Here, we aimed to determine the effects of using B-B filters on the dynamics of the accommodative response and pupil size and perceived levels of visual discomfort, while performing a 30-min reading task at a close distance in subjects who routinely use electronic devices.
Methods
Nineteen healthy young adults (22.0 ± 2.7 years) read two 30-min passages on a computer screen placed at 50 cm, either while using a commercially available B-B filter or without any filter on two different days. The magnitude and variability of both the accommodative response and pupil size were dynamically measured for 60 s using the WAM-5500 open field autorefractometer at 4–5, 9–10, 14–15, 19–20, 24–25, and 29–30 min into the trial. The perceived levels of visual discomfort were also obtained.
Results
The lag and variability of accommodation were insensitive to the blue light level (p = 0.34 and 0.62, respectively). There was a time-on-task effect for the variability of accommodation, showing greater instability over time regardless of the blue light level. The use of the B-B filter was associated with improved reading speed (p = 0.02), with an increase of 16.5 words per minute. However, it was not associated with any significant change in pupil dynamics or the perceived levels of visual discomfort (p> 0.05 in both cases).
Conclusions
Our data showed that the use of a B-B filter had no effect on accommodative dynamics or visual symptomatology. Based on these findings, there is no support for the prescription of B-B filters to attenuate the visual symptoms and signs associated with the use of electronic devices in healthy young adults
Basketball free-throws performance depends on the integrity of binocular vision
https://hdl.handle.net/10481/88542
Basketball free-throws performance depends on the integrity of binocular vision
Vera Vílchez, Jesús; Molina Romero, Rubén; Cárdenas Vélez, David; Redondo Cabrera, Beatriz; Jiménez Rodríguez, Raimundo
Background: The deterioration of the integrity of binocular vision has a detrimental effect on fine visuomotor skills, however, its impact on sports performance remains unknown. We tested the influence of four viewing conditions (binocular viewing, monocular viewing, binocular viewing with monocular blur, and binocular viewing with binocular blur) on basketball free-throws performance.
Methods: Twenty-three male basketball players (19.2 ± 3.4 years) performed 30 free-throws in each viewing condition following a randomised order. Image degradation was induced by the use of Bangerter filters. Complementarily, perceived levels of task load and complexity, as well as visual function were assessed.
Results: We found a worse basketball free-throws performance (percentage of successful shots) in the monocular viewing (∼8%) and binocular viewing with monocular blur (∼9%) in comparison to the condition of binocular viewing (corrected p-values = 0.003 and 0.006; and ds = 0.838 and 0.771). The analyses of subjective ratings and visual function allowed us to confirm a successful experimental manipulation.
Conclusions: Basketball free-throws performance is subject to the integrity of binocular vision, showing a worse accuracy when the sensory dominant eye was occluded or blurred in comparison to natural (binocular) viewing conditions. However, free-throws performance remains stable when the visual acuity is binocularly degraded. Our findings reveal that an appropriate functioning of the binocular vision is needed for optimal sports performance, and highlight the importance of a comprehensive clinical assessment or management of binocular vision in sport contexts.
Caffeine alters the dynamics of ocular accommodation depending on the habitual caffeine intake
https://hdl.handle.net/10481/88490
Caffeine alters the dynamics of ocular accommodation depending on the habitual caffeine intake
Redondo Cabrera, Beatriz; Vera Vílchez, Jesús; Molina Romero, Rubén; Luque-Casado, Antonio; Jiménez Rodríguez, Raimundo