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.

Retina and macula

Macular degeneration · diabetic eye disease · detachment

05Age-related macular degenerationBent lines or a central dark patch: same-day ophthalmic assessment06Diabetic retinopathyOften silent early · needs regular dilated fundus exams08Floaters and retinal detachment riskNew flashes or more floaters: same-day dilated assessmentBIntravitreal anti-VEGF injectionOften called 打眼底針 in Hong KongOMacular OCTCentral retinal thickness · fluidTRetinal detachment, membrane, tear and vitrectomyWhether the macula is still on drives urgencyAJRetinal vascular occlusionVein · artery · when it is urgentAKUveitisSUN anatomy · infectious vs non-infectious · specialist treatment ladderAMMigraine and the eyeScintillating scotoma · retinal migraine · cluster · GCA · IIHAPGiant-cell arteritisNew headache · jaw claudication · sudden blindness · go to A&E nowARLong-term risks of high myopiaPathologic myopia · myopic maculopathy · tear / detachmentBBEye tumoursEyelid / orbit / intraocular · COMS · retinoblastoma · soft urgencyBCMacular holeFull-thickness / lamellar / pseudo-hole · OCT · closure not guaranteedBDEpiretinal membrane (macular pucker / ERM)ERM · not surgery just because it is found · OCTBEThe day of an intravitreal anti-VEGF injectionAnti-VEGF class · what you feelBGThe day of argon retinal barrier laserTear or lattice · outpatient laser