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 · BB

Eye tumours: eyelid, orbit and intraocular (public education)

Eyelid / orbit / intraocular · COMS · retinoblastoma · soft urgency

Last reviewed: 2026-09-15 · 潘家健醫生

Key points

  • Eye tumours may involve lid, orbit or intraocular structures — public education, not a personal prognosis promise.
  • Childhood white-pupil warnings need prompt paediatric ophthalmology / dilated exam; teaching order is life, then eye, then vision.
  • Severe eye pain with nausea/vomiting, sudden severe vision loss or systemic instability: A&E / 999.
  • Other new suspicious lumps or vision change: same-day ophthalmic assessment when possible.

What it is

“Eye tumours” in public education often cover several sites (benign and malignant both occur):

  1. Eyelid and ocular surface: e.g. eyelid lumps; malignant ones may enlarge progressively, ulcerate, bleed or cause local lash loss — get checked; do not self-label as a stye.
  2. Orbit (tissues around the globe): may limit eye movements (diplopia), cause proptosis or compress the optic nerve (field / vision change).
  3. Intraocular: in adults, uveal melanoma (including choroidal) is a commonly discussed primary malignancy; in children, retinoblastoma is a key education theme. Small intraocular lesions can be asymptomatic early, so this page is not for fearful self-scanning; new floaters, flashes, distortion, field loss or childhood warning signs warrant care.

This page is classification and care-path education only — no clinic comparison and no personal survival guarantees.

Adults: uveal / choroidal melanoma (education)

Uveal melanoma is among the most discussed primary intraocular malignancies in adults. Diagnosis rests mainly on clinical exam and imaging (ultrasound and similar). Treatment concepts may include plaque / brachytherapy, enucleation and other specialty strategies. The large multicentre randomised Collaborative Ocular Melanoma Study (COMS), in eligible medium-sized choroidal melanomas, compared iodine-125 brachytherapy with enucleation: overall survival did not show one clearly better than the other in that trial population — those are trial-group results, not your personal prognosis, and not a brand / centre comparison. Whether eye-sparing radiation is suitable can only be decided by an ocular oncology team.

Children: retinoblastoma (education)

Retinoblastoma is one of the most important intraocular malignancy education themes in young children and relates to RB1 and related pathways; some cases are hereditary / germline and some are not — it can occur with or without family history; whether genetic testing is done is decided by specialty / genetic counselling.

Soft warning signs for carers (not self-diagnosis):

  • Leukocoria on flash photos (asymmetric red reflex)
  • New or progressive strabismus
  • Clearly worse visual behaviour, or a red painful eye (more often later)

If these appear → prompt paediatric ophthalmology / dilated eye exam. Public education on treatment priorities often stresses life first, then eye salvage, then vision — local therapies (laser / cryotherapy classes), systemic or local chemotherapy pathways, radiation or enucleation are decided only by a paediatric ocular oncology team. This page does not promise that “early care always saves the eye / always cures”.

Go to A&E now (if you cannot get there, call 999)

  • Severe eye pain with nausea/vomiting, sudden severe vision loss, or systemic instability → A&E / 999

Same-day ophthalmic assessment when possible

  • Progressive eyelid mass, ulceration, bleeding or local lash loss — see an ophthalmologist promptly
  • New diplopia, limited eye movements or clear proptosis
  • New adult field loss or unexplained painless vision drop
  • Childhood leukocoria, new strabismus or sudden change in visual behaviour

What a doctor may discuss / arrange

  • Slit-lamp, dilated fundus, orbital / ocular ultrasound
  • When needed: OCT, fluorescein / ICG angiography, MRI / CT by suspected site
  • Children: complete fundus exam under anaesthesia and team staging
  • Adult choroidal lesions: size stratification and metastasis-risk discussion (individualised)
  • Genetic counselling (retinoblastoma and similar)

Common misconceptions

MisconceptionCloser wording
“Cancer is only for older people”Adults and children have different tumour spectra; childhood leukocoria / strabismus still need careful assessment.
“No pain means no problem”Intraocular tumours can be painless early; warning signs still warrant examination.
“Early discovery always cures / saves the eye”Earlier assessment helps planning; outcomes vary by type and stage — not a guarantee.
“Eye-sparing treatment is always worse / better than enucleation”COMS and related work show comparable survival for certain medium melanomas under either strategy; individual choice is complex.
“The newest chemotherapy path suits everyone”Pathways and indications vary by stage and centre experience; this page does not sell techniques.
Public education only — not personal prognosis; does not replace a face-to-face visit. No booking, prescribing or purchasing, and no cure promise. Emergencies: A&E / 999. Childhood warning signs: see also the strabismus and child-vision pages.

Related public education video (HKOS)

Video thumbnail: 【健康】眼睛都可以生癌!症狀難察覺易延誤醫治【健康】眼睛都可以生癌!症狀難察覺易延誤醫治Open on YouTube (external link)

Video source: Hong Kong Ophthalmological Society (HKOS) “Eyes Decoded” YouTube (public education)

This site is not affiliated with, and is not the same organisation as, the Hong Kong Ophthalmological Society (HKOS).

Selected public references (not a full bibliography)

These are the public studies this page draws on. PMID links go to PubMed (US National Library of Medicine) so you can check them. Figures are from those studies — not your prognosis and not a clinic success rate. Links are not a shop.

  1. Collaborative Ocular Melanoma Study Group The COMS randomized trial of iodine 125 brachytherapy for choroidal melanoma, III: initial mortality findings. COMS report No. 18. Arch Ophthalmol. 2001;119:969-982. DOI 10.1001/archopht.119.7.969. PMID 11448319COMS 中等大小脈絡膜黑色素瘤;放射 vs 摘除。不是個人預後。
  2. Collaborative Ocular Melanoma Study Group The COMS randomized trial of iodine 125 brachytherapy for choroidal melanoma: V. Twelve-year mortality rates and prognostic factors: COMS report No. 28. Arch Ophthalmol. 2006;124:1684-1693. DOI 10.1001/archopht.124.12.1684. PMID 17159027COMS 12 年死亡率與預後因素教育。不是個人預後。
  3. Dimaras H, et al. Retinoblastoma. Lancet. 2012;379:1436-1446. DOI 10.1016/S0140-6736(11)61137-9. PMID 22414599視網膜母細胞瘤兒童教育綜述;基因/臨床概覽。不是個人風險保證。
  4. Linn Murphree A Intraocular retinoblastoma: the case for a new group classification. Ophthalmol Clin North Am. 2005;18:41-53. DOI 10.1016/j.ohc.2004.11.003. PMID 15763190眼內視網膜母細胞瘤分期分類討論;教育用,不是自行分期工具。

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.