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Changes in accommodative responses with multifocal contact lenses: a pilot study.
Optom Vis Sci. 2011 Nov; 88(11):1309-16.OV

Abstract

PURPOSE

To evaluate induced changes in pupil and accommodative response for different accommodative stimuli with three different multifocal contact lenses (CLs).

METHODS

Accommodative and pupil responses with three aspheric multifocal CLs of simultaneous focus center near (PureVision Low Add, PureVision High Add and Focus Progressives) for two accommodative stimuli of -2.5 and -4.00 D were recorded in 10 young subjects. Accommodative response, peak velocity, and time constant of accommodation and pupil constriction were assessed. The measurements were evaluated in all the participants with distance-single vision CLs and with the three multifocal CLs. The monocular measurements were performed in a random sequence for each participant. All parameters were measured with a Hartmann-Shack aberrometer (IRX-3; Imagine Eyes, Orsay, France).

RESULTS

Differences were not found in accommodation response for both accommodative stimuli studied between the single vision lens and the three different multifocal CLs (p > 0.05 for both stimuli). For the 2.5 D stimulus, significant differences were not found in peak velocity and time constant between the single vision lens and the three different multifocal CLs (p > 0.05 for all situations); in amplitude of pupil constriction, differences were only found for the situation with PureVision High Add, where the value was lower than the single vision lens (p = 0.015). For the 4.00 D stimulus, differences with single vision lens in peak of velocity and time constant were only found with PureVision Low Add, where the peak velocity value was higher and the time constant was lower (p = 0.024 and p = 0.032 for peak of velocity and time constant, respectively); for amplitude of pupil constriction differences were not found (p > 0.05).

CONCLUSIONS

Data obtained in this pilot study suggest that in young observers, the multifocal CLs studied do not induce large changes in accommodative system compared with the single vision lens.

Authors+Show Affiliations

Optometry Research Group, Optics Department, University of Valencia, Valencia, Spain. davidmadridcosta@hotmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21926653

Citation

Madrid-Costa, David, et al. "Changes in Accommodative Responses With Multifocal Contact Lenses: a Pilot Study." Optometry and Vision Science : Official Publication of the American Academy of Optometry, vol. 88, no. 11, 2011, pp. 1309-16.
Madrid-Costa D, Ruiz-Alcocer J, Radhakrishnan H, et al. Changes in accommodative responses with multifocal contact lenses: a pilot study. Optom Vis Sci. 2011;88(11):1309-16.
Madrid-Costa, D., Ruiz-Alcocer, J., Radhakrishnan, H., Ferrer-Blasco, T., & Montés-Micó, R. (2011). Changes in accommodative responses with multifocal contact lenses: a pilot study. Optometry and Vision Science : Official Publication of the American Academy of Optometry, 88(11), 1309-16. https://doi.org/10.1097/OPX.0b013e31822be35a
Madrid-Costa D, et al. Changes in Accommodative Responses With Multifocal Contact Lenses: a Pilot Study. Optom Vis Sci. 2011;88(11):1309-16. PubMed PMID: 21926653.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in accommodative responses with multifocal contact lenses: a pilot study. AU - Madrid-Costa,David, AU - Ruiz-Alcocer,Javier, AU - Radhakrishnan,Hema, AU - Ferrer-Blasco,Teresa, AU - Montés-Micó,Robert, PY - 2011/9/20/entrez PY - 2011/9/20/pubmed PY - 2012/2/15/medline SP - 1309 EP - 16 JF - Optometry and vision science : official publication of the American Academy of Optometry JO - Optom Vis Sci VL - 88 IS - 11 N2 - PURPOSE: To evaluate induced changes in pupil and accommodative response for different accommodative stimuli with three different multifocal contact lenses (CLs). METHODS: Accommodative and pupil responses with three aspheric multifocal CLs of simultaneous focus center near (PureVision Low Add, PureVision High Add and Focus Progressives) for two accommodative stimuli of -2.5 and -4.00 D were recorded in 10 young subjects. Accommodative response, peak velocity, and time constant of accommodation and pupil constriction were assessed. The measurements were evaluated in all the participants with distance-single vision CLs and with the three multifocal CLs. The monocular measurements were performed in a random sequence for each participant. All parameters were measured with a Hartmann-Shack aberrometer (IRX-3; Imagine Eyes, Orsay, France). RESULTS: Differences were not found in accommodation response for both accommodative stimuli studied between the single vision lens and the three different multifocal CLs (p > 0.05 for both stimuli). For the 2.5 D stimulus, significant differences were not found in peak velocity and time constant between the single vision lens and the three different multifocal CLs (p > 0.05 for all situations); in amplitude of pupil constriction, differences were only found for the situation with PureVision High Add, where the value was lower than the single vision lens (p = 0.015). For the 4.00 D stimulus, differences with single vision lens in peak of velocity and time constant were only found with PureVision Low Add, where the peak velocity value was higher and the time constant was lower (p = 0.024 and p = 0.032 for peak of velocity and time constant, respectively); for amplitude of pupil constriction differences were not found (p > 0.05). CONCLUSIONS: Data obtained in this pilot study suggest that in young observers, the multifocal CLs studied do not induce large changes in accommodative system compared with the single vision lens. SN - 1538-9235 UR - https://www.unboundmedicine.com/medline/citation/21926653/Changes_in_accommodative_responses_with_multifocal_contact_lenses:_a_pilot_study_ L2 - http://dx.doi.org/10.1097/OPX.0b013e31822be35a DB - PRIME DP - Unbound Medicine ER -