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If translations differ or are incomplete, the Traditional Chinese (zh-Hant) text on this site prevails.
Cornea and ocular surface · AE
After dilation
Glare and near blur for hours
Last reviewed: 2026-10-06 · 潘家健醫生
Key points
Dilation widens the pupil and temporarily reduces focusing so the fundus can be examined; children often need stronger cycloplegia.
Expect light sensitivity and temporary near blur (reading / phone); children’s stronger cycloplegia can last longer. Arrange a lift — do not drive yourself.
Tell staff about known narrow angles; rare acute pressure rises (pain, foggy vision, headache/vomiting) need A&E now.
Do not refuse needed dilation just to rush to a meeting — fundus disease can be missed.
Dilating drops enlarge the pupil and reduce focusing so the lens periphery, vitreous and retina can be seen. Do not drive yourself afterwards. Near work is blurry and light is harsh for hours. If the angle is narrow, a doctor may check it is safe to dilate.
This is general medical information, not a diagnosis, and cannot replace an in-person consultation with a registered ophthalmologist, refraction, or a dilated fundus exam. It is not advice to use any medicine or undergo any procedure. Medicines (including off-label use), laser or surgery must be decided by a registered doctor after examination, according to indications and Hong Kong registration. Figures from the literature are published averages, not any clinic’s results. This site does not book, prescribe or refer. Do not change treatment on your own.
