Contact lenses for visual rehabilitation in Bilateral Nanophthalmos with Retinal Dystrophy- A case report

Abstract

Background: Nanophthalmos is an uncommon developmental ocular disorder characterized by a small eye with short axial length, high hyperopia and high lens to eye volume ratio due to arrested development of the globe in all directions. Different types of fundus changes can rarely occur with nanophthalmos. Observations: This is a case report of a 17 years old female who presented with bilateral gradual progressive visual loss and photophobia at Tilganga Institute of Ophthalmology on 3 rd July 2015. Her best corrected visual acuity was 20/300 with +12.00Ds/-1.00Dcyl@180 in the right eye and 20/200 with +12.00Ds/-1.50Dcyl@180 in the left eye. Axial lengths of two eyes were markedly shortened with pigmentary changes at the macula and dull foveal reflex along with retinal flecks in the mid-periphery. Full field ERG showed diminished rod and cone waves suggestive of rod and cone dysfunction. With the use of Rigid Gas Permeable (RGP) contact lenses, the acuity improved to 20/200 and 20/125 in the right and left eye respectively. Conclusion: This study proposes the use of contact lenses and light absorptive filters for better visual rehabilitation.

Efficacy of fitting HydroCone (Toris K) contact lenses for the visual rehabilitation of patients with posterior microphthalmos

“…However, high costs and ocular complications due to corneal hypoxia or infection are the disadvan-tages of contact lenses. Pradhan et al presented a case of bilateral nanophthalmos in a patient fitted with rigid gas-permeable contact lenses and achieved better visual acuity than spectacle correction (30) . Owing to the disadvantages of rigid gas-permeable contact lenses such as intolerance and ocular discomfort in long-term wear as a result of the rigid material of the lens and potential damage to the corneal surface, especially at the apical area, soft contact lenses might be a better alternative for patients with PM who have steep corneas and significant hyperopia.…”