Accommodative training to reduce nearwork-induced transient myopia. 2009

Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
Department of Vision Sciences, SUNY/State College of Optometry, New York, NY 10036, USA. bvasudevan@sunyopt.edu

OBJECTIVE To assess changes in the nearwork-induced transient myopia parameters of initial magnitude and its decay duration, as well as accuracy of the near accommodative steady-state response and clinically based accommodative facility, after 6 weeks of home-based accommodative training in asymptomatic myopes. METHODS Ten young adult, progressing myopes participated in the study. The experimental paradigm consisted of a baseline session and two follow-up sessions at the end of the third and sixth weeks of training. At the first session, baseline refractive state and selected accommodative functions were assessed. Measurements were repeated at the two follow-up sessions. Home-based vision training included accommodative flippers (+/-2 D) at near, Hart chart at distance (6 m) and near (40 cm), and prism flipper (6 pd) training at near (40 cm), for a total of 20 minutes a day performed 5 days a week for 6 weeks. RESULTS Several dynamic accommodative response functions improved significantly with training. Lens flipper rate increased significantly from 11 to 16 cpm in the OD (p = 0.04), 11 to 19 cpm in the OS (p = 0.03), and 8 to 11 cpm in the OU (p = 0.03). Hart chart rate increased significantly from 22 to 33 cpm in the OD (p = 0.01) and from 22 to 31 cpm in the OS (p = 0.02). There was a significant negative correlation between lens flipper rate and nearwork-induced transient myopia decay duration after training (p = 0.02) with binocular viewing. CONCLUSIONS Training of the accommodative system in these progressing myopes resulted in improved dynamics in both laboratory and clinical measures. This is consistent with earlier reports in the literature of improvement in symptomatic myopic subjects.

UI MeSH Term Description Entries
D007909 Lenses Pieces of glass or other transparent materials used for magnification or increased visual acuity.
D009216 Myopia A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness. Nearsightedness,Myopias,Nearsightednesses
D009907 Optometry The professional practice of primary eye and vision care that includes the measurement of visual refractive power and the correction of visual defects with lenses or glasses. Optometries
D003290 Convergence, Ocular The turning inward of the lines of sight toward each other. Convergences, Ocular,Ocular Convergence,Ocular Convergences
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000065 Accommodation, Ocular The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed) Accommodation, Lens,Ocular Accommodation,Ocular Distance Accommodation,Accommodation, Ocular Distance,Distance Accommodation, Ocular,Lens Accommodation,Ocular Distance Accommodations
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D015348 Vision, Binocular The blending of separate images seen by each eye into one composite image. Binocular Vision
D015349 Vision, Monocular Images seen by one eye. Monocular Vision,Monovision

Related Publications

Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
May 1998, Optometry and vision science : official publication of the American Academy of Optometry,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
April 2002, Current eye research,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
March 1999, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists),
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
June 1994, Optometry and vision science : official publication of the American Academy of Optometry,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
January 1995, Documenta ophthalmologica. Advances in ophthalmology,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
December 2003, Current eye research,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
May 2003, Investigative ophthalmology & visual science,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
July 2021, Indian journal of ophthalmology,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
July 1995, Optometry and vision science : official publication of the American Academy of Optometry,
Balamurali Vasudevan, and Kenneth J Ciuffreda, and Diana P Ludlam
November 1935, The British journal of ophthalmology,
Copied contents to your clipboard!