Medical Conditions

While it’s easy to take our vision for granted, there are actually a lot of problems that can occur with both our vision and our eye health. Some of these issues are caused by having underlying medical conditions that result in changes to different parts of our eyes.

At every eye exam here at The Optical Co, we routinely screen for a wide range of changes to the eye structure and function, even if you don’t yet have any noticeable disturbances to your vision. By detecting problems early, we’re able to help you get the best results for your long-term eye health. Common problems we work with include:


  • Cloudy area in the lens of your eye
  • Common cause of vision loss, especially for people over 80 years, smokers, diabetics, and those exposed to UV rays
  • Symptoms include blurry vision, hazy vision, less colourful vision, difficulty reading and doing everyday activities
  • Surgery can often remove cataracts and correct vision, and is a very commonplace procedure

Floaters and Flashes

  • Floaters are small dark shapes floating across vision
  • Flashes are bright lights in vision
  • Both are common, and may or may not require treatment. This is where an appointment with your eye care professional is important
  • New floaters or flashes that don't go away could be a sign of a serious eye condition


  • Vascular, fleshy growth of tissue in corner of the eye
  • Develops due to excessive UV light exposure
  • Most common in those who live in sunny areas or spend a lot of time outdoors
  • Symptoms include dry eyes, burning, itching, and watery eyes
  • In some cases, may need to be surgically removed

Macular Degeneration

  • Eye disease that blurs the central vision
  • Happens due to ageing and damage to the macula (central part of the retina)
  • Common cause of vision loss for those aged over 65 years
  • Regular eye exams are important to detect it early
  • Treatment may include supplements

Diabetic Retinopathy

  • Eye condition that causes vision loss and blindness in people with diabetes
  • Affects blood vessels in the retina
  • Early intervention can prevent damage and improve vision
  • Managing diabetes can help prevent or delay vision loss
  • Advanced cases may require laser treatment or surgery

Conjunctivitis (Pink Eye)

  • Triggered by allergens, bacteria, or viruses
  • Causes swelling and redness inside the eyelid and white part of the eye
  • May feel itchy, painful, or have a sticky discharge
  • Contagious, so wash hands often and avoid sharing items
  • Some types resolve on their own, while others need treatment


  • Group of eye diseases that cause vision loss and blindness by damaging the optic nerve
  • Common in people aged over 60 years
  • No symptoms at first, so regular eye exams are important
  • Can slowly lose vision and can eventually cause blindness without treatment
  • Early treatment can prevent damage and protect vision with eye drops, medication, and surgery


If you’re worried about changes in your vision, please see our list of refractive errors here.

The Optical Co

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