What does lamellar cataract mean?

Lamellar or zonular cataract is a hereditary cataract that is transmitted in an autosomal dominant mode. The crystalline opacities are located at the level of the primary fibers in the embryonic nucleus. This cataract is usually bilateral and asymmetrical.

Which of the following condition Christmas tree cataract is seen *?

Christmas tree cataract Christmas tree cataracts appear like a Christmas tree; they appear as fine iridescent opacities on the lens’s outer layer (cortex). This is often found in patients with myotonic dystrophy over 90% of patients with myotonic dystrophy.

What is an oil drop cataract?

Conclusions. Oil droplet cataract is a cause of decreased visual acuity of unknown etiology that can be missed. The disease abnormalities are difficult to observe because only subtle changes in lens nucleus are apparent on slit lamp examination; however characteristic fundus reflexes can be identified using retinoscopy …

What causes a posterior subcapsular cataract?

What causes posterior subcapsular cataracts? PSC is caused by the buildup and clumping of protein fibers in the back of the lens, just in front of the posterior lens capsule. This clumping of proteins disrupts the transparency of the lens fibers, resulting in opacities in the lens.

What are the types of cataract?

Cataract types include:

  • Cataracts affecting the center of the lens (nuclear cataracts).
  • Cataracts that affect the edges of the lens (cortical cataracts).
  • Cataracts that affect the back of the lens (posterior subcapsular cataracts).
  • Cataracts you’re born with (congenital cataracts).

Is congenital cataract curable?

The only treatment for congenital cataracts is cataract surgery. If your child has congenital cataracts that are significant enough to require treatment, seek the services of a cataract surgeon who specializes in congenital cataract surgery for children.

What is snowflake cataract?

Diabetic cataract, or “snowflake” cataract, consists of gray-white subcapsular opacities. This type of cataract is seen, in rare cases, in patients with uncontrolled diabetes mellitus.

How rare is a Christmas tree cataract?

A retrospective review of 23 patients with DM1 revealed the presence of Christmas tree cataract in 13 patients (56%). They were unilateral in 10 of the 13 patients and bilateral in three. Average age of diagnosis was 47 years.

How quickly do posterior subcapsular cataracts progress?

Unlike the cortical cataract that develops over time, the posterior subcapsular cataract develops rapidly and symptoms can become noticeable within just a few months. This type of cataract starts as a small, opaque area that typically forms near the back of the lens, directly in the path of light (Mayo Clinic).

What type of cataract is the fastest growing?

Trauma-related cataracts are typically the most fast-growing type of cataracts. Radiation: Radiation-related cataracts, sometimes listed under trauma-related cataracts, occur after the lens has been exposed to radiation. Exposure to high levels of radiation can result in clouded vision in as little as two years.

What are the 3 main types of age related cataract?

3 Common Types Of Age Related Cataracts

  • Nuclear Sclerotic Cataract.
  • Cortical Cataract.
  • Posterior Capsular Cataract.
  • Treatment Options For Age Related Cataracts.