There are vision acuity tests (Teller acuity vision test) whose role is to assess the visual acuity of babies. If both the ophthalmologist's examination and the results of this test show that the ptosis does not affect the baby's visual accuity, follow up can continue and a conservative and expectant attitude can be taken. In the event that we see a risk of amblyopia (lazy eye) during conservative treatment, then surgery to lift the eyelid and avoid affectation of the visual acuity and amblyopia is recommended.