DISLOKASI LENSA

Dr. Mandiri Nindiasari, SpM, MSc

• Subluxation (partial dislocation): The suspension of the lens (the zonule fibers) is slakened, and the lens is only partially within the hyaloid fossa

• Luxation (complete dislocation): The lens is torn completely free and has migrated into the vitreous body or , less frequently , into the anterior chamber.

ETIOLOGI

• Trauma (terbanyak) • Pseudoexfoliasi lens subluxation /luxation• Hereditary causes and metabolic disease • hyperlysinemia (characterize d by retarded

mental development and seizures)• sulfite oxidase deficiency (which leads to

mental retardation and excretion of cysteine in the urine)

• The most frequent atraumatic causes of lens dislocation are Marfan ’s syndrome, homocystinuria, and Weill-Marchesani syndrome

Symptoms

• Slight displacement may be of no functional significance to the patient.

• More pronounced displacement produces severe optical distortion with loss of visual acuity .

Diagnostic considerations

• Cardinal symptoms:– tremulous motion of the iris and lens when the

eye moves (iridodonesis and phacodonesis). • detectable under slit-lamp examination.

Treatment

• Optical considerations and the risk of secondary angle closure glaucoma from protrusion of the iris and dislocation of the lens into the anterior chamber are indications for removal of the lens.

Subluksasi lensa pada sindroma marfan