For the natural progression study healthy hyperopic children and adolescents aged between 5 and 19 years of age will be recruited via the researcher's optometry practices and Aston University optometry clinic. The growth and visual characteristics of the eyes will be followed over time without any intervention by the research team. Following consent, at the initial visit, all participants will undergo a number of visual assessments including measurement of the axial length of the eye, focusing ability over a range of distances, eye muscle balance, vision at a range of different contrasts, pupil size and quality of stereovision and objective assessment of the crystalline lens parameters. Measures of the participant's spectacle prescription by objective and subjective means will also be undertaken following the instillation of eye drops to relax the muscles of the eye and to dilate the pupils. The eye drops will take around 40 minutes to work with the pupils returning to normal size after approximately 24 hours. The majority of these assessments are similar to those undertaken during a routine eye examination. The height of the subjects will also be taken at baseline and at six monthly intervals throughout the study. Parents and children will also be asked to complete a background questionnaire at this visit. The first visit is expected to last around 90 minutes. Participants will be reviewed every six months over a period of three years where the measures taken at baseline will be repeated. Instillation of eye drops to dilate the pupils and relax the eye muscles will be used on alternate visits.