MRCP UK EXAMINATIONS

Detailed explanation-1: -Aphakia refers to having no lens in your eye. Pseudophakia refers to having an intraocular lens (IOL) placed in your eye. This usually happens when lenses with cataracts are removed during surgery. Cataracts make your lenses cloudy or filmy.

Detailed explanation-2: -Three types of contact lenses are utilized for pediatric aphakia: rigid gas permeable (RGP), silicone elastomer and hydrogel lenses. Silicone elastomer lenses are highly permeable to oxygen, even more than RGP lenses.

Detailed explanation-3: -The two types of genetic aphakia are primary congenital aphakia (the baby is born without lenses because of a genetic mutation or developmental issue) and secondary congenital aphakia (the baby has a lens, but it either detaches or becomes absorbed before birth).

Detailed explanation-4: –The eye is highly hypermetropic with total power of about 44 D (power of eye with crystalline lens is about 60 D).-The anterior and posterior focal points are about 23 mm and 31 mm, respectively.