This site provides general eye-health education. It cannot replace individual assessment by a registered doctor, and does not offer personal diagnosis, prescriptions, bookings, sales or referrals.
If translations differ or are incomplete, the Traditional Chinese (zh-Hant) text on this site prevails.
Halo = soft ring(s) around lamps. Starburst = spikes from the same lights. Intensity rises monofocal → EDOF → trifocal/MF as a teaching ladder only — pupil and design matter. Not a post-op promise.

Show on this night scene
Intensity ladder (illustration)
A demonstration is not an examination and cannot replace dilated fundus exam, visual field or OCT. A normal result here does not rule out disease. New changes need prompt review by a registered ophthalmologist; sudden vision loss — go to A&E. This site does not book or refer.