# Symptoms of Retinal Thinning

Source page: https://www.kudretgozistanbul.com/en/blog/eye-diseases/symptoms-of-retinal-thinning

**Author:** Kudret Eye İstanbul | **Medical Approval:** Op. Dr. Mehmet Ali Özdil | **Date:** 2026-09-08

> **Summary:** Retinal thinning usually means peripheral retinal degeneration such as lattice degeneration, or retinal changes caused by high myopia. It usually causes no symptoms and is found in a routine examination, but it can lead to a retinal tear or detachment, so the warning signs of those matter.

## Quick Facts
- **Symptoms of thinning itself:** Usually none; does not usually affect vision
- **Warning signs:** Sudden increase in floaters, flashes of light, a shadow or curtain across vision
- **Diagnosis:** Dilated examination of the back of the eye
- **Treatment:** Mostly monitoring; prophylactic laser only where needed; surgery if detachment occurs

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## What Is Retinal Thinning?
The retina perceives light and sends nerve signals to the brain. In lattice degeneration, the outer (peripheral) retina has thinned, weaker areas where the vitreous gel can be more firmly attached. When the vitreous separates from the retina with age, it can pull on these points and cause a tear.

## Warning Signs (Tear or Detachment)
- **Increase in floaters:** Black spots, threads or cobweb shapes. A sudden increase, especially with flashes, can signal a tear and needs examination the same day.
- **Flashes of light:** Lightning-like bursts when moving the eye, entering a dark room or shifting gaze suggest traction or a tear; they increase as traction increases.
- **Shadow or curtain:** A dark shadow at the edge of vision that grows, or a sudden fall in sight, can indicate retinal detachment, an emergency.

Wavy lines, fading colours or declining central vision are not signs of retinal thinning but usually of macular conditions, and also need an examination.

## Causes
- Advanced myopia (the eyeball lengthens and the retina thins)
- Age-related change in the vitreous gel
- Injuries and blows
- Genetic predisposition
- A previous retinal problem
- Chronic conditions such as diabetes

Delayed intervention in a detachment leads to permanent sight loss.

## Treatment
- **Monitoring:** Thinning without symptoms or a tear usually needs no treatment; the back of the eye is examined at intervals set by the doctor.
- **Prophylactic laser (laser photocoagulation):** If a tear or hole is found or risk is high (for example after a detachment in the other eye), laser bonds the retina around the area. Not every case needs it.
- **Surgery:** Needed if a detachment develops; laser alone is not enough. The sooner, the better the chance of preserving sight.

## Lifestyle Recommendations
- Diet that keeps blood sugar balanced
- Regular eye examinations
- Protecting the eyes from injury
- Reducing tobacco and alcohol
- More foods rich in omega 3

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## Frequently Asked Questions

**Q: Does retinal thinning resolve by itself?**
A: Most peripheral degeneration does not disappear. Regular follow-up and timely intervention for risky findings matter.

**Q: Do floaters always mean a retinal tear?**
A: No, but with a sudden increase, flashes of light or a curtain across vision, a same-day examination is recommended.

**Q: Is the risk greater with high myopia?**
A: Yes, high myopia can increase the risk of peripheral lesions and of tear or detachment.

**Q: Is prophylactic laser applied to every case?**
A: Generally no. It depends on a tear or hole, lesion type and personal risk factors.

**Q: When is it an emergency?**
A: A curtain or dark shadow, a sudden reduction in vision, or a sudden increase in floaters with flashes of light: see an ophthalmologist without delay.