Clinical Research Directory

Inclusion Criteria: * • subject with ametropia on each eye ≤-12.00D * subject with best corrected visual acuity ≥ 20/25, no amblyopia * subject with normal transparency of eyes * subject with a healthy fundus that does not reveal major abnormalities that may affect vision due to the fluctuate situations * subject able to cooperate with the screen and the operator * subject without heavy drug treatment that may affect vision as synthetic antimalarials, corticosteroids * non-diabetic subject * non nystagmus subject * non-strabismus subject * subject who has not had eye surgery less than 1 year old Exclusion Criteria: * • subject with a topography showing an anomaly (keratoconus type or other) * subject with hyperopia or presbyopia * subject with mild myopia ≥ -1.00D * subject who cannot speak with the operator including those staff of local optometrists or ophthalmologists