Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
Find Dr. Johnston's expertise for a condition
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- Experienced
- CataractDr. Johnston isExperienced. Learn about Cataract.
- ChalazionDr. Johnston isExperienced. Learn about Chalazion.
- Dry Eye SyndromeDr. Johnston isExperienced. Learn about Dry Eye Syndrome.
- Eyelid BumpDr. Johnston isExperienced. Learn about Eyelid Bump.
- Increased Intracranial PressureDr. Johnston isExperienced. Learn about Increased Intracranial Pressure.
- PapilledemaDr. Johnston isExperienced. Learn about Papilledema.
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