MODIFIED MOBILE PHONE - A NEW LOW VISION AID

Dr. Babu RajendranThe Eye Research Foundation

Dr. D. Janardhana ReddyVijaya Hospital, Chennai

FP168; E-Poster 153

INTRODUCTION

Low vision devices can often improve the reading capabilities of people with

Macular Degeneration Other Macular Pathologies

Such magnifiers include spectacles, telescopes, hand or stand-alone magnifying glasses or closed circuit television.

Some are inefficient and clumsy, others are extremely expensive. (From 1,000 - > 25,000)

INTRODUCTION

AIM OF STUDY

To develop aLOW VISION AID for reading that is

Cheap Effective Easy to use Portable

MATERIALS USED

Most commonly used item Available across the country Even Most remote Villages Extremely Cheap versions available

THE MOBILE PHONE

Camera Phones cost ~ 1400/= & upwards Telephoto & Macro NOT required Even old unused phones will do As long as camera is working

MOBILE PHONE

Minimum requirementMust have a camera

MOBILE PHONE

Some Cameras have Macro

feature

High End have Magnifying

software

PROBLEM

1. How to get magnification

2. How to get close up without macro

3. How to maintain clarity

SOLUTION

ATTACH AN IOL +12 D*

OPTIC IN FRONT OF CAMERA LENS FIX HAPTIC WITH CELLOTAPE

OPTICIN FRONT

OFCAMERA LENS

TAPEHOLDINGHAPTICS

OPTICIN FRONT

OFCAMERA LENS

*LARGER POWERS GIVE MORE MAGNIFICATION BUT FOCUS CLOSER TO THE PAPER & REDUCES RANGE

VOILA!!

CAMERA IN NORMAL MODE

CAMERA IN NORMAL MODE

CAMERA WITHIOL ATTACHEDCAMERA WITHIOL ATTACHED

MOBILE PHONE

Patient will have Mobile Phone But NO access to IOL

Hence Doctor or Clinic must fix the IOL Teach Patient how to use the LVA Maybe even provide a spare IOL

COST OF MOBILE 000 (If patient already has Mobile)

COST OF IOL 200 TOTAL 200

COST

DISADVANTAGECAMERA CANNOT BE USED FOR REGULAR

PHOTOGRAPHY IF LENS IS ATTACHED

This is a PROTOTYPE – PROOF OF CONCEPTCOMMERCIAL PRODUCTION WILL FIND WAYS TO FIX IOL

MORE EFFICIENTLY AND EVEN REMOVABLE AND REUSABLE