DDx of symptoms

Ocular pain

Photokeratitis

Bacterial/Fungal keratitis

Foreign body/Corneal abrasion

Anterior uveitis

Scleritis

Recurrent corneal erosion (acute, upon waking)

Bacterial conjunctivitis

Dacryocystitis

Canaliculitis (mild-moderate)

Burning sensation

Dry eye

Blepharitis (esp posterior)

No pain

Refractive error

Episcleritis (mild discomfort)

Pterygium/Pinguecula (irritation)

Viral conjunctivitis (gritty)

Allergic conjunctivitis

Cataract

PVD

Choroidal naevus/melanoma

Itchiness

Allergic conjunctivitis

Viral conjunctivitis (mild)

Flu-like symptoms

Viral conjunctivitis (sore throat etc)

Allergic conjunctivitis (nasal congestion, sneezing)

Dacryocystitis (fever, unwell)

Hx Trauma

FB invasion & Cornea abrasion

Chemosis

Allergic conjunctivitis

FB sensation/grittiness

FB/corneal abrasion

Photokeratitis & other keratitis

Episcleritis

Dry eye

Corneal oedema

RCE

Pterygium/Pinguecula

Viral conjunctivitis

Bacterial conjunctivitis

Blepheratitis

Headaches

Primary headaches

Ocular migraines

Hyperiopia/Astigmatism

BVD

Presbyopia

Hormonal fluctuation *systemic conditions

Asthenopia/Fatigue/Strain *especially as day progresses

All refractive errors (presbyopia, hyperopia etc)

BVD

Epiphora (tearing)

Photokeratitis & other keratitis

anterior uveitis

FB/Corneal abrasion

RCE

Hyperopia

Viral conjunctivitis (watery discharge)

Allergic conjunctivitis

Bacterial conjunctivitis

Dry eye (excessive)

Dacryocystitis

Canaliculitis

Crusting

Blepharitis (eyelid, lid margins, flakes, collarettes)

Dacryocystitis (eyelids, lashes)

Canaliculitis (inner corner of eye, lashes)

Mucopurulent discharge

Bacterial keratitis

Bacterial conjunctivitis (eyelids stuck together)

Dacryocystitis (from punctum)

Canaliculitis (from puctum, pouting, dacryoliths)

Hyperaemia (redness)

Photokeratitis & other keratitis

Anterior uneitis

Episcleritits (superficial), Scleritis (deep blue-red)

Dry eye

Corneal abrasion

Hyperopia

Pinguecula/Pterygium

Viral/Bacterial/Allergic conjunctivitis

Blepharitis

Canaliculitis

Photophobia

Photokeratitis & other keratitis

Anterior uveitis

Episcleritis/Scleritis

Dry eye

Corneal oedema

Corneal abrasion

RCE

Normal VA

Episcleritis

Hyperopia (young pxs)

Pinguecula

Viral conjunctivitis

Allergic conjunctivitis

Dry eye (fluctuates)

Reduced vision

Photokeratitis & other keratitis

Anterior uveitis

FB/corneal abrasion

Scleritis

Dry eye

All refractive error

Cataract

Amplyopia

Corneal oedema

AMD (central vision blurred, blind spots)

Bacterial conjunctivitis

Cataracts (cortical all distances)

Choroidal naevus (depending on location)

Choroidal melanoma

Reduced Distance Vision

Myopia

Extreme Hyperopia

Nuclear cataract (myopic shift)

Distance vision

Hyperopia

Presbyopia (esp small print)

AMD

Posterior sub capsular cataract

Decreased CS

Cataracts cause loss of contrast sensitivity

Vision worse at night

Myopia

Nuclear cataract

Acute angle closure

Ghosting/DV

Monocular:

Astigmatism

Cataract

Hyperopia

Binocular:

Strabismus

Cranial nerve

BVD

Difficulty in bright lights/sunny days

Cortical cataracts, all cataracts

Corneal oedema

Squinting

All refractive errors

^ Hyperopia (when reading)

Cataracts

Miotic pupils (photophobic)

Photokeratitis

Corneal abrasion

Anterior uveitis

Eyelid oedema

Photokeratitis

Corneal abrasion

Allergic conjunctivitis

Severe bacterial conjunctivitis

Viral conjunctivitis

Blepharitis

Hx Contact Lens Wear

Corneal abrasion

Bacterial keratitis

Hypoxia (corneal neovascularisation)

Dry eye (intolerant to CL use)

Hx Welding

Photokeratitis (inadequate PPE)

Choroidal melanoma

Hx UV exposure

Photokeratitis

Pinguecula/Pterygium

Cataracts

Choroidal naevus and melanoma

BCC and SCC

Family Ocular History

Myopia

Hyperopia

Astigmatism

Cataracts

PVD

Retinal tears/detachment

Choroidal melanoma

Bilateral

Photokeratitis

Allergic conjunctivitis

Pinguecula

Cortical cataracts

Dry eye

Episcleritis

Unilateral

FB/corneal abrasion

Bacterial conjunctivitis (may spread)

Viral conjunctivitis (uni onset)

Acute/Immediate onset

Corneal abrasion

RCE

Bacterial conjunctivitis (acute)

Gradual/slow development

Cataracts (PSC progresses more rapidly than other types though)

Raised IOP

Fungal keratitis

Corneal oedema

Episcleritis

Acute Angle Closure

Glaucoma

Halos

Corneal oedema

Cortical cataract (coloured haloes around lights)

Glare

Cataracts (cortical cataract)

Floaters

PVD

Diabetic retinopathy

Retinal tear and detachment

Choroidal melanoma

Flashes

PVD

Retinal tear and detachment

Ocular migraine (zigzag, coloured)

Choroidal melanoma

Colour vision changes

Cortical and nuclear cataracts

Loss of Visual Field

Cataracts

retinal detachment (peripheral VD)

Choroidal melanoma

Glaucoma

Drusen

Choroidal Naevus

Lipofuscin

Choroidal melanoma

Subretinal fluid

Choroidal melanoma

Retinal tear

Retinal detachment