Test: Diseases of Lens - 1 - NEET PG MCQ

The lens possesses a unique carrier mechanism for ascorbic acid, which serves as a significant antioxidant within the lens. This carrier system is facilitated by myoinositol.

The lens contains two primary antioxidants: Vitamin C and Vitamin E. Additionally, it possesses two detoxifying enzymes, namely catalase and superoxide dismutase.

• Hyperinsulinemia does not display subluxation.
• In cases of ocular trauma, there is no definitive direction.

Inflammatory reactions in children tend to be intense, and if the child is already experiencing uveitis, the implantation of an IOL may worsen the situation.

Ideally, the child should undergo surgery as soon as possible to avert amblyopia. This condition involves the development of visual reflexes, which typically occurs around 5 to 6 months of age.

As there is no specific age advised for the procedure, we will denote the response with the minimum timeframe.

The most notable characteristic is Mega-locornea, while the most prevalent condition is Ectopia Lentis.

We must choose the shortest duration specified, therefore we will respond without delay.

Congenital Rubella is marked by nuclear pearly cataract; however, there is no displacement of the lens.

Following ECCE, we recommend prescribing glasses after a period of 6 weeks, while after SICS, we are able to prescribe them after just 2 weeks.

Chalcosis refers to the presence of copper alloy within the eye.

Alport’s syndrome is a hereditary condition characterised by haemorrhagic nephritis.

The Vossius ring refers to the iris pigments that are marked on the anterior capsule of the lens, resembling the shape of the pupil, and this occurs as a result of blunt trauma.

Steroid-induced cataracts are characterised as posterior subcapsular cataracts.

Preparing properly is the most essential aspect to avoid infection during any surgical procedure.

The lens is avascular, meaning it obtains its nutrients from the aqueous humour.

Nuclear sclerosis results in a slight rise in the refractive index of the lens. This increase in the refractive power of the lens enhances near vision.

Pain that is escalating alongside D/V, especially after just three days following cataract surgery, strongly indicates endophthalmitis.

PSC is located close to the nodal point of the eye, which consequently reduces vision significantly.

The incision dimension in phacoemulsification ranges from 2.75 mm to 3.2 mm.

The nucleus is the most ancient component of the lens.

Subluxation of the lens is the most frequent complication associated with Nuclear Sclerotic Hypermature cataract.

Retinal detachment may be the most likely reason for the appearance of floaters that develop after a period of 6 months post-surgery.

Morgagnian cataract can lead to complications such as phacolytic glaucoma.