Posted in The Medical Stuff

Types of Macular Dystrophies

Macular Dystrophies

Macular dystrophies are a large number of rare, inherited conditions that affect central vision. They can appear in childhood, but some are not diagnosed until later in life (late onset)

⚫ Macular Dystrophy symptoms

Juvenile macular dystrophies affect people in different ways. As your dystrophy progresses, your ability to see clearly will change. Everyone’s diminished eyesight is relative to themselves.

⚫ Macular Dystrophy diagnosis

Most people are diagnosed with a juvenile dystophy after visiting an optician who identifies a potential problem. They will be then referred to the nearest hospital eye centre or department.

⚫ Prognosis

As of yet. There is no treatment or cure but several bodies are working on it. If you do want to help with this, please see the Macular Society. I often share their posts and they really do need help with funding research.

⚫ Stargardt disease

Stargardt disease is a genetic condition caused by a tiny alteration in a single gene. The most common of these conditions. Uncommon to cause total blindness.

⚫Bestrophinopathies

This is a group of five related macular conditions caused by mistakes or mutations in a gene called BEST1. Some people never progress from the earliest stage of the disease 20/40 and will maintain 20/40 or better in both eyes.

⚫ Cone Dystrophy

There are various ways in which cone dystrophy is inherited but it is most commonly described as ‘sporadic’.

⚫ Doyne honeycombe dystrophy

Doyne honeycomb dystrophy is a dominant condition. It’s uncommon for it to cause total blindness.

⚫ Sorsby Fundus
dystrophy

Sorsby fundus dystrophy is extremely rare and not thought to cause total blindness.

⚫ Pattern dystrophy

Pattern dystrophy is a dominant macular dystrophy, usually occurring later in life. This is not thought to cause total blindness.

⚫ Bull’s eye maculopathy

Bull’s eye maculopathy describes a number of different conditions in which there is a ring of pale-looking damage around a darker area of the macula. This isn’t know to cause total blindness.

⚫Pseudoxanthoma elasticum

Pseudoxanthoma elasticum or ‘PXE’ is a disease that affects many parts of the eye. In some cases can cause blindness.

Now, whilst I’ve not had a genetic test to find out which gene is involved with my dystrophy yet, you will have noticed that I refer to Stargardt disease which is the most common of the Dystrophies.

They are testing me to find out why my peripheral vision is compromised, as it shouldn’t be with the diagnosis I first had in 2015.

About 1 in 10,000 people have an genetic eye dystrophy of some sort.

Posted in The Medical Stuff

Photophobia

Light sensitivity or “photophobia” is common in people diagnosed with eye conditions or sight loss.

Light sensitivity is where the light level in the environment is too bright and causes discomfort. For some people, this discomfort can be extreme and can further reduce their usable vision.

Glare is also a problem with someone with Photophobia.

I have timed it to the point now that if I can see sunshine bouncing of metal or glass.. ie… Vehicles, windows or signs, I move my head and eyes away from the bright ‘flash’, so I don’t get blinded.

It can actually stop you from seeing for a few moments so you cannot carry on walking or carry on with what you were doing previously until your sight comes back. Like a grey fuzzy haze or when it’s dark like a black blob, both with bright light or green blobs. You will have whatever you were looking at like a silhouette stuck in your vision until it fades, after five to ten minutes.

This is why I haven’t my sunglasses on alot of the time as this causes pain, (when I didn’t wear them I would have headaches and eye pain for days on end) temporary blindness and headaches.

Now I know why, I just pop the sunnies on and the symptoms are loads better now ☺

Posted in The Medical Stuff

Astigmatism

Detailed diagram of the eyeball with Astigmatism

Astigmatism is a type of refractive in which the eye does not focus light evenly on the retina. This results in distorted or blurred vision at any distance. Other symptoms can include eyestrain, headaches, and trouble driving at night.

2 photographs showing the difference between someone with and without astigmatism

The cause of astigmatism is unclear, however it is believed to be partly related to genetic factors.The underlying mechanism involves an irregular curvature of the cornea or abnormalities in the lense of the eye.

This means that the eye or eyes affected, which I have Astigmatism in both eyes, will cause blurred unfocused vision.

Example of person with and without astigmatism reading text

Diagnosis is by an eye examination.