Why is family history important in optometry?

Many eye diseases have a strong genetic component. A family history of glaucoma increases a patient's risk 4-9 times compared to the general population. AMD, high myopia, strabismus, retinitis pigmentosa, and color vision deficiency all cluster in families. Knowing the family history helps guide screening frequency, earlier baseline testing, and patient education about signs to watch for.

What past ocular surgeries are most important to document?

Cataract surgery (with IOL implant), LASIK or PRK refractive surgery, strabismus surgery, retinal procedures (vitrectomy, buckle, pneumatic retinopexy), glaucoma surgery (trabeculectomy, tubes), and intravitreal injection history are all clinically significant. Prior cataract surgery changes the differential for vision changes; prior LASIK affects IOP measurement accuracy; prior retinal procedures affect risk assessment for new symptoms.

Which systemic diseases most commonly affect the eyes?

Diabetes mellitus, hypertension, and autoimmune conditions (rheumatoid arthritis, lupus, Sjogren's syndrome) are the most common. Other important conditions include thyroid disease (Graves' ophthalmopathy), multiple sclerosis (optic neuritis), HIV/AIDS (CMV retinitis), and inflammatory bowel disease (uveitis). Any condition affecting blood vessels, nerves, or the immune system can potentially produce ocular manifestations.

Medical, Ocular, and Family History: CPO Exam Guide

Why History Matters in Eye Care

A patient's medical, ocular, and family history provides context that is essential for understanding their current eye health. Systemic diseases affect the eyes, previous eye conditions influence current findings, and hereditary factors predict future risk. As a CPO, gathering this information accurately is foundational to the physician's assessment.

Past Medical History (PMH)

The past medical history documents all systemic conditions the patient has been diagnosed with. In ophthalmology, certain systemic diseases are particularly relevant:

Condition	Ocular Relevance
Diabetes mellitus	Diabetic retinopathy, macular edema, cataracts, cranial nerve palsies
Hypertension	Hypertensive retinopathy, arteriovenous nicking, disc edema
Thyroid disease	Thyroid eye disease, proptosis, lid retraction
Autoimmune disease (RA, lupus)	Dry eye, uveitis, scleritis, episcleritis
Multiple sclerosis	Optic neuritis, internuclear ophthalmoplegia
HIV/AIDS	CMV retinitis, cotton wool spots, opportunistic infections

Always ask about diabetes and hypertension specifically, even if the patient's general history seems clear. Many patients manage these conditions so routinely that they forget to mention them when asked about "medical conditions." A direct question like "Do you have diabetes or high blood pressure?" catches these important details.

Past Ocular History (POH)

The past ocular history documents all previous eye conditions, surgeries, and treatments:

Previous diagnoses: glaucoma, AMD, diabetic retinopathy, strabismus, amblyopia
Surgeries: cataract extraction, LASIK or PRK, strabismus surgery, retinal procedures, trabeculectomy
Trauma: injuries to the eye or orbit, foreign body removal
Previous treatments: intravitreal injections, laser procedures, patching for amblyopia
Current medications: all topical eye drops and their dosing schedules

Previous cataract surgery is especially important to document. Pseudophakic patients (those with an intraocular lens implant) cannot develop a cataract in the operated eye again, which changes the differential for vision changes significantly.

Family History (FH)

Many eye diseases have a strong hereditary component. The family history should specifically ask about:

Glaucoma: first-degree relatives with glaucoma increase risk 4-9 times
Age-related macular degeneration: strong genetic component, especially with certain CFH gene variants
Strabismus: familial tendency toward misalignment
High myopia or hyperopia: refractive errors cluster in families
Retinitis pigmentosa: multiple inheritance patterns (autosomal dominant, recessive, X-linked)
Color vision deficiency: X-linked inheritance common

Documenting "no family history" when you only asked about parents. Family history should include parents, siblings, and grandparents when the patient knows this information. A sibling with glaucoma is as clinically significant as an affected parent.

Integrating History Elements

Think of the three history components as layers of context that build on each other. The current complaint tells you what is wrong now. The past medical and ocular history explain predisposing factors. The family history identifies hereditary risk that may not have manifested yet but should be monitored. Together, they give the physician the full picture needed for accurate assessment and planning.

Key Takeaways

Diabetes and hypertension are the most critical systemic conditions to document in eye care
Past ocular history must include all previous diagnoses, surgeries, trauma, and current drops
Family history should cover parents, siblings, and grandparents for glaucoma, AMD, and hereditary conditions
Pseudophakic status significantly changes the clinical picture for vision change complaints
A complete history takes 3-5 minutes and directly improves diagnostic accuracy