Myopia has been shown to be associated with reduced accommodation parameters as well as stronger HOA and pseudoaccommodation. Wavefront and accommodation parameters interrelations differ in myopic and hyperopic eyes. The nuances revealed should be taken into account when developing correction methods that purposefully influence refractogenesis.

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PurposeA comparative study of accommodation, pseudoaccommodation and higher order optical aberrations (HOA) in young people with myopia and hyperopiaMethods39 myopic eyes (averagely −5.2 ± 1.5 D) and 53 hyperopic eyes (averagely +3.1 ± 1.15 D) of 46 patients aged 5–20 years (mean age 11.6 ± 0.6 years) were examined. Objective accommodative response (OAR) was measured on Grand Seiko Binocular Open Field Auto ref/keratometer WR‐5100K. Aberrometry was conducted on OPD‐Scan III (Nidek). Relative accommodation reserve (RAR) were measured. The amplitude of pseudoaccomodation was determined as the difference between the calculated additional plus lens of 3.0 D and the power of the minimum plus lens which allowed reading in cycloplegic conditions (1% cyclopentolate hydrochloride × 2) at the distance of 33 cm.ResultsOAR and RAR were significantly higher in hyperopic patients (−2.2 ± 0.07 D and −3.0 ± 0.17 D; respectively), as compared to myopic ones (−1.8 ± 0.09 D, p < 0.01, and −2.2 ± 0.11 D, p < 0.05; resp.). Total HOAs measured with a pupil 4 mm wide: root mean square, vertical coma, spherical aberrations, as well as pseudoaccomodation were significantly higher in myopic patients (0.5 ± 0.05 D; −0.05 ± 0.01 D; 0.15 ± 0.05 D; 0.9 ± 0.1 D resp.) in comparison with those in hyperopic patients (0.37 ± 0.03 D; −0.003 ± 0.01 D; 0.04 ± 0.01 D; 0.6 ± 0.1 D resp., p < 0.05). Corneal spherical aberrations were measured to be 0.1 ± 0.03 D in myopic and 0.03 ± 0.04 D in hyperopic patients (p < 0.05).ConclusionsOAR and RAR are lower in myopia compared with hyperopia. Root mean square and some HOAs are higher in myopia, which probably accounts for higher pseudoaccomodation values in myopic patients.

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