Henry Greene: We’d like to share with you answers to questions that Ocutech frequently receives regarding prescribing Bioptic Telescopes.
Prescribers often ask: what power is recommended for their patient?
We generally recommend that your prescription goal should provide visual acuity of approximately 20/40. We find that individuals with 20/40 vision have ample acuity for just about all visual activities. If they have more demanding needs, try to provide 20/30 visual acuity with a slightly higher power device. Of course the higher power the device the narrower the field of view, so we’re not eager to provide higher magnification then necessary for that reason.
Which eye should a Monocular Telescope be prescribed to?
Ocutech recommends that you prescribe the Bioptic to the dominant eye, even if it is the poorer seeing eye, so long as that through the telescope the dominant eye sees better than the non-dominant eye. Prescribing a monocular telescope to the non-dominant eye is often much more challenging for the patient to use.
We are also asked what carrier lens prescription ought to be prescribed?
We recommend that whatever prescription your patient habitually wears in their glasses should go into the carrier lenses for the Bioptic Telescope. If they wear a bifocal we suggest you continue to use a bifocal. We suggest you avoid progressives and trifocals, just use a conventional bifocal lens. There should be a minimum of 10mm distance between the top of the bifocal segment and the bottom of the eyepiece.
Ocutech receives frequent questions regarding when to prescribe eyepiece corrections.
Ocutech’s VES Systems are designed to correct for most refractive errors simply by changing the focus of the device. So refractive errors only need to be considered in the eye piece if you have astigmatism above 3 diopters or spherical powers above plus or minus 8.
Patients occasionally ask whether they can use their own eyeglass frame and have the telescope mounted to it. For the VES-K, VES–Sport and the VES-II you are required to use Ocutech’s frames because they’re designed to take the mounting designed into the telescope. For the VES-mini, many frames can be used for that purpose. We recommend that they be metal or plastic with adjustable nose pads and be sturdy in design. We suggest that you avoid rimless designs.
How much do Ocutech Bioptic Telescopes cost?
There’re 3 parts involved in determining the fee: the cost of the device itself, the customization expenses associated with carrier lens prescriptions or other adaptations and lastly the professional fees associated with training the individual to use the device effectively. These need to be discussed with the prescribing specialist before the device is ordered.