You can cor­rect your vi­sion while you sleep

The Tribune (NZ) - - YOUR BODY -

The preva­lence of my­opia (short­sight­ed­ness) is pro­gress­ing faster than pre­dicted and the lat­est re­search in­di­cates that my­opia will in­crease seven­fold by 2050.

On­set is due to a com­bi­na­tion of na­ture and nur­ture. In the case of nur­ture, it has been demon­strated that if one or both par­ents are my­opic, there is a sta­tis­ti­cally higher prob­a­bil­ity that the child will also de­velop my­opia. How­ever, it is na­ture – ie en­vi­ron­men­tal fac­tors as a re­sult of the chang­ing na­ture of your life­styles – that has pri­mar­ily been held re­spon­si­ble for in­creas­ing rates of my­opia. This has been iden­ti­fied as re­sult­ing from a com­bi­na­tion of de­creased time out­door, and in­creased near work ac­tiv­i­ties e.g. mo­bile phones, tablets and com­puter use. Ortho-K has been per­ceived as the most ef­fec­tive method of my­opia con­trol.

What is Orthok­er­a­tol­ogy? Orthok­er­a­tol­ogy (Ortho-K for short) is an ex­cit­ing new treat­ment of vi­sion cor­rec­tion that elim­i­nates the need to wear con­tact lenses or spec­ta­cles to see clearly dur­ing the day. Ortho-K vi­sion cor­rec­tion works by gen­tly re­shap­ing the cen­tre of the cornea overnight with spe­cially de­signed con­tact lenses. Once the lenses are re­moved in the morn­ing you will have clear vi­sion with­out spec­ta­cles or con­tact lenses.

The Ortho-K vi­sion cor­rec­tion process is com­pletely re­versible and has been shown to re­duce the pro­gres­sion of short-sight­ed­ness in younger pa­tients. Cur­rently at Visique Nay­lor Palmer pa­tients with low - mod­er­ate short-sight­ed­ness and low amounts of astig­ma­tism are ideal can­di­dates for Ortho-K vi­sion cor­rec­tion.

Orthok­er­a­tol­ogy has reached a safe and pre­dictable level made pos­si­ble with the lat­est tech­no­log­i­cal ad­vance­ments in com­put­erised man­u­fac­tur­ing, and oxy­gen per­me­able con­tact lens ma­te­ri­als that are avail­able at Visique Nay­lor Palmer.

Are there age re­stric­tions for Ortho-K? There is no age limit young or old, chil­dren. Ortho-K has been shown to re­duce or half the pro­gres­sion of short-sight­ed­ness it is be­com­ing a very ex­cit­ing method of vi­sion cor­rec­tion in teenagers and pre-teens.

How can Ortho-K vi­sion cor­rec­tion slow my child’s short­sight­ed­ness (my­opia) pro­gress­ing? Re­search has shown that the pro­gres­sion of my­opia (ax­ial elon­ga­tion or length­en­ing of the eye) is thought to be due to pe­riph­eral de­fo­cus caused by stan­dard treat­ment with con­tact lens and spec­ta­cles. Al­though tra­di­tional lenses fo­cus light pre­cisely onto the cen­tral part of the retina to make vi­sion clear, the de­sign of these lenses fo­cuses light be­hind the retina in the pe­riph­eral parts of the eye. This de­fo­cus acts as a stim­u­lus for the eye to lengthen which causes an in­crease in my­opia. Ortho-K cor­rec­tion, due to the na­ture of how the shape of the front sur­face of the eye is al­tered, is be­lieved to pre­vent the pe­riph­eral light rays from be­ing fo­cused be­hind the retina, in­stead fo­cus­ing light at or in front of the retina (as the di­a­gram on the next page shows). This elim­i­nates the stim­u­lus for eye­ball length­en­ing, thus pre­vent­ing my­opic pro­gres­sion.

How long does it take to reach good vi­sion? Most pa­tients have rapid im­prove­ment in the first few days of ther­apy. Gen­er­ally 70% of the re­quired cor­rec­tion is achieved af­ter only the first nights wear. Op­ti­mum, sta­ble vi­sion will gen­er­ally re­quire up to 10-14 days of treat­ment. Some high pre­scrip­tions may not be able to be fully cor­rected with Ortho-K even with op­ti­mum lens de­sign. If the goal of Ortho-K cor­rec­tion is my­opia con­trol then this is not a prob­lem as this my­opia-con­trol ef­fect will still be present if low­pow­ered spec­ta­cles are still worn dur­ing the day to ‘top-up’ the vi­sion.

To learn more about Ortho-K book with one of our op­tometrists for a FREE Ortho-K screen­ing assess­ment to dis­cuss if Ortho-K is right for you. A full eye exam at Visique Nay­lor Palmer or Visique Eye Spy within the pre­vi­ous 12 months is nec­es­sary prior to start­ing Ortho-K, as sev­eral as­pects of your eyes in­clud­ing health, vi­sion and corneal shape will have to be as­sessed to es­tab­lish if your eyes can have Ortho-K.

A full eye exam will re­veal if eyes can take Ortho-K.

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