<em><strong>Objective:</strong></em> To determine difference in the accommodative state between refractive amblyopic and non-amblyopic patients from 5 to 12 years of age. <em><strong>Methods:</strong></em> The sample included 142 children (46 with refractive amblyopia and 96 non-amblyopic) between 5 and 12 years of age the accommodative state was evaluated in each one of them by determining the accommodative lag with Nott retinoscopy, accommodative flexibility with flippers, and the amplitude of accommodation with a subjective (MPD) and an objective technique (MODAA). <em><strong>Results:</strong></em> A statistically significant difference was found between amblyopic and non-amblyopic subjects in the lag of accommodation (0.22, p < 0.001), accommodative flexibility (1.5 cycles, <em>p</em> < 0.001), and the amplitude of accommodation 1.6 D (<em>p</em> < 0.001), using the MPD technique. With MODAA, there was no statistically significant difference between amblyopic and non-amblyopic children for the dominant eye (0.02 D, <em>p</em> = 0.893), while for the non-dominant eye the difference was 0.38 D. <em><strong>Conclusions:</strong></em> Using objective methods to evaluate these three functions of the accommodative state in patients with mild to moderate refractive amblyopia, the values obtained were within the normal range. However, when compared with non-amblyopic patients, a statistically significant difference was detected, which does not necessarily lead to the diagnosis of amblyopic patients with inadequate accommodation. The most altered accommodative function in the non-dominant eyes of patients with refractive amblyopia was accommodative flexibility. In patients with refractive amblyopia, alteration of the accommodative system is directly proportional to the degree of anisometropia.

<em><strong>Objective:</strong></em> To determine the reference values of amplitude of accommodation through the dynamic objective measurement of the amplitude of accommodation (MODAA, for its initials in Spanish) in pre-presbyopic emmetropic people between the ages of 35 and 40, examined at the Optometry Clinic from La Salle University. <em><strong>Methodology:</strong></em> Fifty emmetropic patients were included, distance and near visual acuity with each eye equal or better than 20/30, normal binocularity. Defects of more than 1.50 Dpt in its sphere or more than 1.00 Dpt in the cylinder were excluded, as well as accommodative and vergence alterations, strabismus, amblyopia, anisometropia (≥ 1.00 Dpt in the sphere or the cylinder), systemic diseases, anterior or posterior segment alterations, ocular history of surgery or trauma. Each patient was subjected to three tests of amplitude of accommodation: MODAA, Donders and Sheard, and the values were compared according to Hofstetter and Duane. <em><strong>Results:</strong></em> The reference value found for MODAA in patients between the ages of 35 and 40 was: 4 Dpt (SD 0.25 Dpt). The subjective techniques (Donders and Sheard) gave higher values than MODAA. The reference values of Hofstetter, Donders and Duane have statistical differences from MODAA. Conclusions: The MODAA method has a range of reference in pre-presbyotic patients between 3.75 and 4.25 Dpt, and this value is not comparable to Donders and Duane’s normality value tables nor with the Hofstetter formulas.