Hyperopia, commonly known as farsightedness, is a refractive error in which light focuses behind the retina rather than on it. It occurs when the eyeball is shorter than average or when the cornea and lens are not refractive enough. To see clearly, the child constantly engages the focusing muscle inside the eye, a process called accommodation.
This is where children differ sharply from adults. A child's focusing power is strong, so a hyperopic child may read the chart perfectly. Because visual acuity looks normal, the problem is easily missed, while the eyes have been working hard all day. Headaches, fatigue during reading, reluctance to do near work and, in some children, an inward turning of one eye are the consequences of that effort.
Most children are born mildly hyperopic. As the eye grows, its axial length increases and this physiological hyperopia decreases towards school age. Low degrees found in young children therefore often need observation rather than glasses. The decision rests on how far the degree exceeds what is expected for the age, the difference between the two eyes, whether any deviation is present, and the child's symptoms.
This is the most important childhood consequence of hyperopia. As the child forces the focusing muscle, the system that turns the eyes inward is engaged at the same time, and one or both eyes may deviate inward. This is called accommodative esotropia.
After cycloplegic drops the pupils stay large for a few hours, near vision is blurred and bright light is uncomfortable. Sunglasses or a hat on the day of the examination help, and it is better not to schedule the visit on a demanding school day.
Refractive errors often coexist. For distance blur see myopia in children, and for shadowed or stretched images see astigmatism in children. All topics are listed under pediatric eye diseases.
As an Ophthalmologist, Dr. Ayşe Dolar Bilge, I provide diagnosis and treatment services with my experienced team.
Most children are born mildly hyperopic and the degree decreases as the eye grows. Low, age-appropriate hyperopia is usually monitored without glasses. Higher degrees may not decrease sufficiently on their own; here the purpose of glasses is not to erase the number but to prevent amblyopia and inward deviation.
Children have strong focusing power and can mask hyperopia by their own effort, so visual acuity may appear normal. To reveal the true degree, a cycloplegic examination that temporarily relaxes the focusing muscle is required, and I base spectacle decisions in children on that measurement.
Yes. As the child forces the focusing muscle, the system that turns the eyes inward is engaged as well and an inward deviation can appear; this is accommodative esotropia. With the correct prescription the deviation may improve markedly or resolve, and it can return if the glasses are left off.
If there is inward deviation or amblyopia, the glasses must be worn full time, because in those situations the glasses are the treatment. If the only issue is difficulty with near work, wearing time is planned individually. The prescription changes with growth, so regular follow-up is necessary.
The effect of the drops is temporary. The pupils stay large for a few hours, near vision is blurred and bright light is uncomfortable. Reading and homework are difficult during that time and everything returns to normal afterwards. It helps to avoid a demanding school day and to bring sunglasses or a hat.
When the two eyes differ in degree, the clearer eye takes over and the other may fall behind. Children do not complain, so this is often found only at a screening examination. Because the visual pathways are most adaptable in the preschool years, early diagnosis and patching when needed directly affect the outcome.
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