Adherence 1 Age-related macular degeneration 1 Article 1 Diabetic macular edema 1 Humans 1 Macular Degeneration 1 Metamorphopsia 1 Retinal Diseases 1 Smartphone-based application 1 System Usability Score Usability 1 Vision Disorders 1 Visual Field Tests 1 aged 1 best corrected visual acuity 1 clinical article 1 cohort analysis 1 controlled study 1 female 1 human 1 macular degeneration 1 male 1 metamorphopsia 1 observational study 1 perimetry 1 pilot study 1 prospective study 1 questionnaire 1 retina disease 1 retina maculopathy 1