<prompt> Keratomalacia is -Occurs due to Vit-A deficiencyRelatively benign conditionFirst feature of Vit- A deficiencyAlso seen in retinitis pigmentosa  <response>: Keratomalacia is due to deficiency of vitamin A.It is not relatively benign. Larger stromal defects in keratomalacia commonly result in blindness.Earliest symptom is nightblindness and earliest sign is conjunctival xerosis.Retinitis pigmentosa does not cause keratomalacia. 