Study of the accommodative difference between wearing orthokeratology lens and frame lens in low myopic anisometropia children / 国际眼科杂志(Guoji Yanke Zazhi)

ABSTRACT

@#AIM:To investigate the monocular and binocular accommodative difference between wearing orthokeratology lens and frame lens in low myopic anisometropia children.<p>METHODS: Totally 47 children(94 eyes)with low degree myopic anisometropia(1.0D≤binocular equivalent spherical lens difference <2.5D)were involved between November 2019 and April 2020 in the retrospective clinical study. Twenty-seven cases(54 eyes)wore frame lens were used as group A and 20 cases(40 eyes)wore orthokeratology lens were used as group B. The corrected visual acuity and the accommodative parameters \〖the accommodative response(AR), the accommodative facility(AF), the accommodative amplitude(AMP)\〗 at 1mo after treatment were recorded and compared. <p>RESULTS:In two groups the results of AR were positive, and it meant accommodative lag(AL). AL of the higher myopic eyes was higher than the lower eyes in group A(0.63±0.21D <i>vs</i> 0.25±0.34D, <i>P</i><0.001), but there was no significant difference of AL in group B(<i>P</i>=0.104). Between two eyes, the difference of the corrected visual acuity and the monocular AMP in two groups were no significant(<i>P</i>>0.05). The binocular AR difference in group A was significantly higher than group B(0.38±0.36D <i>vs</i> 0.10±0.26D, <i>P</i>=0.005), and the binocular AF was lower(8.22±1.15c/min <i>vs</i> 9.95±0.89c/min, <i>P</i><0.001). There was no statistical difference in binocular AMP(<i>P</i>=0.280).<p>CONCLUSION: Low myopic anisometropia children with orthokeratology lens can obtain higher binocular AF and lower binocular AR difference than that with frame lens, so as to maintain more coordinated binocular accommodation.