You are here

Novel Treatment for Degenerative Myopia

Award Information
Agency: Department of Health and Human Services
Branch: National Institutes of Health
Contract: 2R42EY017484-02
Agency Tracking Number: EY017484
Amount: $645,867.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N/A
Solicitation Number: PHS2007-2
Timeline
Solicitation Year: 2008
Award Year: 2008
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
VISDEX CORPORATION 1751 CAPISTRANO AVE
BERKELEY, CA 94707
United States
DUNS: 181177580
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 () -
Business Contact
Phone: (510) 524-2684
Email: maynardj@pacbell.net
Research Institution
N/A
Abstract

DESCRIPTION (provided by applicant): Myopia affects 30% of the population in the U.S. and Europe, and 70-90% of the population in some Asian countries. High myopia of greater than 8 diopters affects 0.2 0.4% of the US population and up to 1% of the pop
ulation in Asian countries. The principal change associated with degenerative myopia is progressive stretching and thinning of scleral tissues leading to posterior staphyloma formation. As scleral tissues stretch and thin, there is associated stretching of
retinal and choroidal tissues that promote visual loss. Indeed, degenerative myopia is the leading cause of untreatable blindness in China, Taiwan, and Japan, and is ranked 7th in the United States. While visual loss from macular atrophy and choroidal neo
vascularization are most common in degenerative myopia, patients with this disease are also more prone to retinal detachment and macular hole formation. Although a large population is affected by this disease worldwide, there is currently no effective meth
od to arrest progression and reduce the rate of visual loss. A proprietary treatment developed through collaboration of Visdex, Caltech and UCSF successfully stabilizes scleral shape and prevents globe enlargement in vitro. The treatment consists of topic
al application of the formulated drug candidates to the surface of the sclera, allowing the drug molecules to diffuse into the tissue and then irradiating the sclera with visible light. The procedure requires approximately 10 minutes and the drug candidate
s have been approved by the FDA for use in patients. Initial in-vivo experiments in rabbits show that the drug candidates and irradiation are well tolerated by the eye. The objective for this Phase II STTR project is to demonstrate that such a treatmen
t can be translated into a clinically meaningful protocol that shows efficacy in an animal model of myopia. Based on in-vitro efficacy and in-vivo biocompatibility observed in Phase I, this innovative treatment will be optimized in vitro for stabilizing sc
leral shape in an intact eye expansion test (Aim 1), adapted to surgical procedures for administration of the drug candidates and irradiation in vivo and evaluated for toxicity and efficacy in a rabbit model (Aim 2), and tested for the ability to prevent m
yopia in vivo in a guinea pig model of degenerative myopia (Aim 3). This Phase II research and development effort will culminate in a treatment that halts progression of degenerative myopia by stabilizing the sclera. The subsequent Phase III development w
ill be a continuation leading to human clinical trials and FDA approval. PUBLIC HEALTH RELEVANCE: Degenerative myopia is a progressively worsening condition in which the sclera thins and stretches, leading to globe elongation and damage of retinal and cho
roidal tissues. Although degenerative myopia affects nearly 1 million people in the United States, and approximately 20 million people worldwide, there is currently no effective treatment method. This project will result in an innovative, light-activated t
reatment that will arrest stretching of the sclera and prevent the associated retinal complications that lead to blindness.

* Information listed above is at the time of submission. *

US Flag An Official Website of the United States Government